Abstract: A full-circle secondary lining inverted arch construction formwork system for a long-distance tunnel and a formwork transporting method adopt a customized steel formwork, a steel pipe support, and a turn buckle. The steel pipe support is arranged on the longitudinal main edge, and is provided between the longitudinal rails and a primary lining for supporting vertical buoyancy. The turn buckle is arranged between two sides of the formwork and a reserved steel bar for resisting horizontal load generated during asymmetric pouring. A cantilever gantry crane and a transportation flat car are used for formwork transporting, wherein travel rails of the cantilever gantry crane and the transportation flat car are integrated on the customized steel formwork, and there is no other rail. According to the present, the formwork has high strength and rigidity, the formwork system is simple.

Abstract: Provided are a system and construction method of a single-layer lining tunnel structure based on a mine-tunnelling method. With the single-layer lining tunnel structure, a structural rigidity and durability of the tunnel are improved. A construction process of sprayed concrete is improved, specifically, compactness agent and durability enhancing fiber are added to concrete to improve the compactness of concrete, and a special spraying process is adopted to reduce a bound rate of the concrete, and thus to improve the impermeability of sprayed concrete to reach a impermeability level of waterproof concrete. Steel fiber, cellulose fiber, synthetic fiber and other materials are added into the concrete can improve the tensile strength, crack resistance and durability of the concrete.

Abstract: Compositions and methods are provided for a system in which liquid carbon dioxide, or a mixture of liquid and gaseous carbon dioxide, is converted to solid carbon dioxide by exiting an orifice at a sufficient pressure drop, e.g., for delivery of carbon dioxide to a concrete mixture in a mixer.

Abstract: The invention discloses an ultra-long tunnel sewage disposal, separation and drainage structure suitable for cold regions, comprising: a tunnel portal section drainage structure and a tunnel body section drainage structure and an out-tunnel clear water ditch, an out-tunnel deep-buried ditch, an out-tunnel sewage ditch and a clear water tank; the tunnel portal section drainage structure comprises a central ditch and a side sewage ditch A, the central ditch is deeply buried in the position, lower than the freezing depth, of a tunnel portal section of the main tunnel, and the side sewage ditches A are arranged on both sides of the tunnel portal section of the main tunnel; the tunnel body section drainage structure comprises a side clear water ditch and a side sewage ditch B, and the side clear water ditch and the side sewage ditch B are arranged on both sides of the tunnel body section of the main tunnel.

Abstract: Methods and systems for installation of a liner inside a conduit (e.g., water pipe) to transport a fluid (e.g., potable water) to rehabilitate the conduit, in which the liner can be installed, and thus the conduit can be rehabilitated, more efficiently, including, for example, by further reducing an extent of digging that may have to be done, by testing more readily (e.g., pressure-testing for watertightness or other fluid-tightness once installed), and/or by adapting to a cross-sectional size of the conduit. Also, the liner may be thinner, interact better (e.g., less) with the fluid flowing through the conduit, and/or be otherwise designed to enhance its use and performance.

Abstract: A process is used for the renovation or new construction of corrugated sheet metal tunnels. The corrugated sheets are sandblasted for cleaning and room cleaning. Then anchoring elements are welded to the rough side of the sheets. A layer of shotcrete is applied to this roughened side of the sheets to obtain a smooth coating over the crests and valleys of the sheets. A reinforcement net is placed on this layer and a second layer of shotcrete or mortar is applied to cover the reinforcement net. The top layer can be smoothed. The subsequent corrugated sheet metal tunnel includes corrugated sheets covering the tunnel walls and ceilings with the course direction of their wave crests and valleys parallel to the circumferential direction of the tunnel profile. The corrugated sheets on the inside and/or outside of the tunnel are reinforced with an applied reinforced concrete layer.

Abstract: Couplings for coupling pre-cast construction segments together and pre-cast construction segments having such couplings. A construction coupling for connecting prefabricated segments includes a pair of anchors. Each anchor includes a central portion and a pair of legs. The central portion defines an elongated bore. The pair of legs extending from opposite sides of the central portion. Each leg extending in a direction generally transverse to the elongated bore and having a proximal end attached to the central portion and a free distal portion disposed away from the central portion. The construction coupling also includes a pin adapted to be received in the elongated bores of the pair of the anchors to connect the pair of anchors together.

Abstract: The frost-resistant assembled initial support structure of the tunnel for supporting a surrounding rock includes a bearing layer, an elastic compressible structure and an inflatable airbag. A gap space is formed between the bearing layer and the surrounding rock, and the inflatable airbag and the elastic compressible structure are provided in the gap space; and the inflatable airbag after being inflated and the elastic compressible structure jointly fill up the gap space. A construction method includes providing the bearing layer in the tunnel, and forming the gap space between the bearing layer and the surrounding rock; providing the inflatable airbag and the elastic compressible structure in the gap space; and inflating the inflatable airbag and filling up the gap space with the inflatable airbag and the elastic compressible structure.

Abstract: The present invention is a method for rehabilitating, repairing, and replacing manholes and connected sewer lines. In some embodiments, a compressed liner is inserted through the manhole access hole or the connected sewer lines. Prior to insertion, the liner may be cut and/or folded to be compressed to a size that can fit through the manhole opening or the sewer lines. Once inserted in the manhole or sewer lines, the liner should be expanded, and if necessary, bonded together with a resin along the separation line. Next, a bonding material may be injected between the liner and a surface of the manhole or sewer line to seal any cracks or fissures in the brick or concrete wall and to seal the liner against the existing manhole or sewer line to improve structural integrity and longevity. A new corbel may then be installed and bonded to the liner.

Abstract: A method of lining a pipe with a lining mixture formed from a dry component and a liquid is discussed. The method includes placing the dry component in a dry component surface container located above ground, conveying the dry component from the dry component surface container to a dry component subterranean supply container located underground, conveying the dry component from the dry component subterranean supply container to a mixer located underground, mixing the dry component with the liquid to form the lining mixture, and applying the lining mixture to the pipe with a mixture applicator.

Abstract: An asymmetric coordinated support device for gob side entry is provided. The device includes an inner support board, an outer roadway side support assembly, an outer roof support assembly, and a flexible reinforcement layer, wherein the inner support board is supported to an innermost side closest to a rock layer to be supported in an extending direction of the roadway, and wherein a side of the inner support board remote from the rock layer is provided with the outer roadway side support assembly extending along the roadway direction and the outer roof support assembly located on a roof of the outer roadway side support assembly.

Abstract: The present invention disclose a tunnel wall element comprising a lightweight body element coated with a fire resistant coating providing increased mechanical integrity of the tunnel wall element. The present invention is also related to a method of building road and railway tunnels with the lightweight coated tunnel element.

Abstract: Disclosed is a safety management system for a worker at a tunnel construction site, the system comprising: a server for controlling the safety management system; routers installed at predetermined intervals at the tunnel construction site; a worker terminal carried by the worker; and at least one information collecting terminal for receiving worker information from the worker terminal and collecting environment information of the tunnel construction site so as to transfer the same to the server, wherein the server determines a location of the worker by using the worker information; divides a map of the tunnel construction site into a plurality of zones and displays the same on a browser; displays the worker information on a zone where the worker is located, among the plurality of zones; and determines at least one danger zone on the basis of the environment information and previously input risk factors.

Abstract: Methods and devices for a boring and laying device for the trenchless laying of a pipeline, including a boring head, wherein the boring head includes a connection for a pilot bore linkage, wherein a pilot bore is produced from a starting point to a destination point along a predetermined boring line, a pump for suctioning and conveying away the drillings, a conveying portion behind the boring head in which at least one suction element for receiving and conveying away drillings, and a connecting portion including a connection for the pipeline. The pilot borehole is expanded, and simultaneously the pipeline is laid by pulling the pilot bore linkage out of the borehole on one side and/or by pushing the pipeline into the borehole, wherein drillings are hydraulically received behind the boring head of the boring and laying device and conveyed away out of the borehole with a pump.

Abstract: A high-strength confined concrete support system for an underground tunnel. The support system includes multiple confined concrete arches, bolts and cables, and a prestressed steel strand backfilling system. The confined concrete arches all support the surrounding rock of the tunnel and are sequentially arranged along the tunnel. Every two adjacent confined concrete arches are connected by a longitudinal connection structure. The support system is provided with a plurality of layers of steel bar meshes on the surrounding rock side and the tunnel side, and shotcrete layers are sprayed on the support system and the steel bar meshes. The prestressed steel strand backfilling system comprises a prestressed steel strand system and a filling material. The filling material fills the space between each confined concrete arch and the surrounding rock to equalize a load on the confined concrete arch and generate prestress.

Abstract: A flame retardant coating is disclosed. The flame retardant coating comprises polyurea elastomer, spray processable graphite, a graphite stabilizer agent, and a flame retardant. A method of manufacturing a flame retardant polyurea elastomer coating is also disclosed. A two part polymerizable system is provided comprising a first part containing isocyanates, and a second part containing polyamines. At least one of the first part and the second part contains a flame retardant, and both of spray processable graphite and a graphite stabilizer agent. The first part and the second part are then mixed to form the flame retardant polyurea elastomer coating.

Abstract: A self-moving tunnel support canopy includes front arch frame, rear arch frame, forward jack, and support jack disposed under the front arch frame. The front arch frame has front arch beams and front longitudinal beams longitudinally disposed along arch upper surfaces of front arch beams and coupled to all the front arch beams. The rear arch frame has rear arch beams and rear longitudinal beams longitudinally disposed along arch upper surfaces of the rear arch beams and coupled to all the rear arch beams. The front longitudinal beams and the rear arch beams are spacedly disposed, and a spacing is configured between the front arch beam and a front-adjacent rear arch beam. One end is coupled to the front arch frame, and the other end of the forward jack is coupled to the rear arch frame. The front arch beam and the rear arch beam are both arch-shaped beams.

Abstract: Foldable pipe-in-pipe composite tubular structure having between pipes after rounding and hardening a filling material associating the layers to enhance the structure mechanical performance mostly in collapse resistance.

Abstract: A pipeline regeneration pipe, with which necessary strength can be ensured by way of the inserted regeneration pipe itself without the necessity of grouting, includes an inner wound flexible resin layer 5d which constitutes the inner layer of a straight pipe part 5b, an outer wound flexible resin layer 5e laminated on the outer surface of the inner wound flexible resin layer and constitutes the outer layer of the straight pipe part, and a protruded rim part 5c helically formed on the outer surface of the outer wound flexible resin layer, the protruded rim part 5c being configured by a rigid-resin core 5g helically wound, and a core-covering part 5f integrated with the outer wound flexible resin layer so as to surround the rigid-resin core.

Abstract: A self-moving tunnel support canopy includes front arch frame, rear arch frame, forward jack, and support jack disposed under the front arch frame. The front arch frame has front arch beams and front longitudinal beams longitudinally disposed along arch upper surfaces of front arch beams and coupled to all the front arch beams. The rear arch frame has rear arch beams and rear longitudinal beams longitudinally disposed along arch upper surfaces of the rear arch beams and coupled to all the rear arch beams. The front longitudinal beams and the rear arch beams are spacedly disposed, and a spacing is configured between the front arch beam and a front-adjacent rear arch beam. One end is coupled to the front arch frame, and the other end of the forward jack is coupled to the rear arch frame. The front arch beam and the rear arch beam are both arch-shaped beams.

Abstract: Provided is a restoration pipe pulling-in method which can easily determine whether pilling-in of a restoration pipe is possible wherein the restoration pipe has a diameter as much as large relative to a deteriorated drainage channel, and which can pulling a restoration pipe into a sewer pipe wherein the gap between the restoration pipe and the sewer pipe is shorter.

Abstract: A civil engineering work (1) comprising a front face (9), a facing (3) having a back surface (32) and a front surface (31) that is substantially the same as said front face (9) of the work, a fluid-tight covering (4) on the back surface, a fill (2) arranged behind said fluid-tight covering (4), and an anchoring device (6) ensuring a mechanical linkage between the facing (3) and the fill (2), with said facing (3) comprising a cavity (5) inside of which a portion of the fluid-tight covering (4) is arranged to form a recessed space into which is inserted an anchoring element (16) that is a part of said anchoring device (6), and a method for implementing such a work.

Abstract: A tubular liner for rehabilitating sewers has a reinforcing layer being expandable in the circumferential direction and formed of fiber rovings and impregnated with a curable reactive resin. The tubular liner has an outer tubular film which encloses the reinforcing layer and is formed of a material that can be expanded radially. A longitudinal pull strap is provided and absorbs the tensile forces acting on the tubular liner when the tubular liner is inserted into the sewer. The tubular film has a laminated nonwoven layer on the side facing the reinforcing layer. The longitudinal pull strap is located between the nonwoven layer and the reinforcing layer and is in immediate contact with the outer side of the reinforcing layer and the nonwoven layer. The longitudinal pull strap has a width of less than 50% of a length of the outer circumference of the reinforcing layer.

Abstract: A tunneling or extraction machine includes cutting tools that are movable over the heading face and are arranged on the boom, and a platform that is movable in the longitudinal direction of the machine and carries roof support devices. The roof support devices include a support manipulator or a supporting device and an anchor-boring and anchor setting device. The anchor-boring and anchor setting device are fastened to the moving platform in a pivotable manner between a parked position and an operating position. The support manipulator or the supporting device has a telescopic arm that is fastened to the movable platform in a vertically pivotable manner, wherein the support manipulator or the supporting device and the anchor-boring and anchor setting device are fastened to the movable platform at a pre-defined, fixed distance apart from one another and are displaceable together with the moving platform between a retracted position and a forwardly displaced position.

Abstract: An underground mining apparatus includes a mining head for moving through underground material to extract material in its path and form a passageway behind the mining head as it advances. An elongate structure extends along the passageway to the mining head and provides a path for delivering the extracted material to ground surface. A shroud is positioned about the elongate structure for supporting engagement with the periphery of the passageway and to provide a space through which the elongate structure can move. The shroud has a cross-sectional shape corresponding generally to the cross-sectional shape of the passageway formed by the mining head. A method is also disclosed.

Abstract: An device and method for repairing the junction of a main pipe line and a lateral pipe. The device uses a series of independently controlled bladders to adjust the timing and pressure exerted by the bladders on the pipes. The device also uses a liner assembly of resin absorbent material is formed, with a tubular lateral liner connected to a concentric circular main liner. The liner also includes an opening to facilitate loading of the liner in the device. Upon loading the bladders and resin-embedded liner into a train, the device is positioned and the bladders independently inflated, either concurrently or in sequence, installing the liner assembly onto the pipe. Once the resin is cured, the bladder assembly and launcher are removed from the sewer pipe.

Abstract: A mine seal or wall capable of retaining its integrity under a transverse load. The mine seal is constructed of a plurality of interlocking masonry blocks. The interlocking blocks include a body with a top surface, planar sides, planar ends, and a bottom surface. A top shear lug extends longitudinally along the top of the block. An end shear lug extends vertically along each end of the block. The bottom surface and each end of the block includes a groove therein. When stacked end to end in successive rows, the top and end shear lugs of each interlocking block engage the complimentary grooves in the adjacent blocks thereby enabling the blocks to self-align vertically and lock together as they are stacked. The resulting mine seal exhibits a high resistance to transverse loads.

Abstract: A manhole liner and a method of using the same are provided. The manhole liner is sized substantially equally to the largest diameter of the manhole, so that the liner does not have to stretch to be pressed against the manhole wall. Additionally, the liner is impregnated with a resinous material capable of curing and hardening. A bladder, preferably stretchable circumferentially and having a diameter less than the smallest diameter of the manhole, is inserted into the liner. The bladder is expanded to press the liner against the wall of the manhole to dispense resinous material from the liner, while the liner is able to fold over itself in areas having a diameter less than the original diameter of the liner. Because the bladder stretches to produce a smooth outside surface, the resinous material will migrate to areas in the folds and will cure with a smooth interior surface.

Abstract: A method and system for lining pipes which utilizes an in-line water heater to improve efficiency when lining long lengths of pipe. The method and system for lining pipes generally includes a pipe lining machine and a water heater. The outlet of the pipe lining machine will generally be connected to the inlet of the water heater by a first conduit. The outlet of the water heater will generally be connected to a second conduit and the linet of the pipe lining machine will generally be connected to a third conduit. A non-metallic liner is extended through the pipe to be lined and connected at either end to the respective ends of the pipe, the end of the second conduit and the end of the third conduit. By placing a water heater in-line with the pipe lining machine, the pipe lining capability of the pipe lining machine may be greatly improved.

Abstract: System for pipeline rehabilitation. The system includes repairing a leak in a pipe using a pair of substantially semi-cylindrical parts connected through a compliant joint. When the parts are compressed, the semi-cylindrical parts form a cylinder whose outside diameter is less than the inside diameter of a pipe with a defect thereby allowing the cylinder to be inserted into the pipe at a location of a leak. Once in place, the parts engage the inside surface of the pipe when the compression is released thereby to seal the leak.

Abstract: A mining can descender comprising a plurality of strand jacks configured to work in concert to lower a load disposed between a first strand jack and a second strand jack a base configured to accommodate said plurality of strand jacks mounted there to, wherein said base comprises a plurality of assembled sections.

Abstract: A liner tube is provided for repairing either a single pipe line or a main pipe line having a lateral pipe line connected thereto. The liner tube assembly includes a liner tube impregnated with a liquid material capable of curing and hardening. The liner tube includes a gasket or band positioned about the juncture of the pipe lines. The gasket or bands form a tight seal between the liner tube and the pipe line.

Abstract: The present invention relates to a tunnel reinforcement structure capable of controlling ground displacement using pressurization, including: reinforcements adapted to be forcedly inserted into the bored holes formed along the outer surface of the section to be excavated of the tunnel; auxiliary reinforcements disposed between the reinforcements from a point between 4 m and 8 m inwardly from the ends of the reinforcements; steel ribs disposed on the inner four faces of the excavation face of the tunnel; pressurizing bags each provided between the steel ribs and the excavated inner surface of the tunnel; a concrete part adapted to be cast between the steel ribs; and lining concrete adapted to be cast to the steel ribs and the inner surface of the concrete part.

Abstract: A liner tube is provided for repairing either a single pipe line or a main pipe line having a lateral pipe line connected thereto. The liner tube assembly includes a liner tube impregnated with a liquid material capable of curing and hardening. The liner tube includes a gasket or band positioned about the juncture of the pipe lines. The gasket or bands form a tight seal between the liner tube and the pipe line.

Abstract: A sealing tube for the internal lining of fluid lines, in particular waste water lines, includes at least one tubular fabric ply, which is impregnated or saturated with a synthetic resin having a preferably gel-like or concentrated consistency. The weft bands or threads, which run in the circumferential direction, are formed by glass fibers or threads, in particular only by glass fibers or threads. The warp bands or threads, which run in the longitudinal direction of the sealing tube, are formed by, if necessary elastically stretchable, glass threads and/or rubber threads and/or plastics threads.

Abstract: A liner tube is provided for repairing either a single pipe line or a main pipe line having a lateral pipe line connected thereto. The liner tube assembly includes a liner tube impregnated with a liquid material capable of curing and hardening. The liner tube includes a gasket or band positioned about the juncture of the pipe lines. The gasket or bands form a tight seal between the liner tube and the pipe line.

Abstract: A liner tube is provided for repairing either a single pipe line or a main pipe line having a lateral pipe line connected thereto. The liner tube assembly includes a liner tube impregnated with a liquid material capable of curing and hardening. The liner tube includes a gasket or band positioned about the juncture of the pipe lines. The gasket or bands form a tight seal between the liner tube and the pipe line.

Abstract: An apparatus applies mesh from a roll to a face of a mine passage. A spindle is adapted for supporting the roll of mesh. An arm supporting the spindle extends in a generally vertical direction and is adapted for rotation about an axis aligned with a direction of elongation of the mine passage such that the spindle traverses a path for applying the mesh from the roll to the face. A mast independent of the arm carries a drill head for drilling into the face of the mine passage. Related methods are also described.

Abstract: A kit, apparatus, and method for sealing a junction between a manhole and a pipe within a sewer system are provided. In a first embodiment, the end of a pipe adjacent a manhole is sealed by the use of a pipe liner and a tubular sleeve made of a hydrophilic material. The tubular sleeve is held in place by a mechanical fastener and a pipe liner is installed or otherwise placed through the tubular sleeve and against the wall of the pipe. In a second embodiment, a majority of the area surrounding a junction of a pipe and a manhole is sealed by the use of a tubular sleeve made of a hydrophilic material including a flange portion, a mechanical fastener, a pipe liner, and a manhole liner.

Abstract: An apparatus and method for sealing pipes or underground structures is provided. In one embodiment, the end of a pipe is sealed by the use of a pipe liner and a sealing member. The sealing member may be a hydrophilic material, a hydrophobic material, a compressible material, or a paste. The sealing member is held in place by a mechanical fastener and a liner is installed adjacent the sealing member and against the wall of the pipe or other structure to be sealed. In another embodiment, a manhole is sealed by the use of a sealing member, a mechanical fastener, and a manhole liner.

Abstract: An apparatus and method for sealing pipes. In one embodiment, the end of a pipe is sealed by the use of a pipe liner and a sealing member. The sealing member may be a hydrophilic material, a hydrophobic material, a compressible material, or a paste, and may also be a unitary member or formed from a sheet of material. The sealing member is held in place by a mechanical fastener and a liner is installed adjacent the sealing member and against the wall of the pipe or other structure to be sealed. The mechanical fastener aids in holding the sealing member in place at the end of the pipe.

Abstract: The present invention is directed to a clip connector for joining steel ribs together end to end to provide a support for lateral wood or steel beams used to line a tunnel. The clip connector has a generally C shaped cross section with a web section having a width approximately equal to the width of the flange of the steel rib and a length and shape sufficient to overlap the ends of the joined steel ribs. The clip has flanges extending from either side of the web to wrap around the flange of steel ribs and contain the flange of the steel rib.

Abstract: Stretch-resistant liners for lining pipes, pipes lined with stretch-resistant liners, and methods for lining pipes with stretch-resistant liners. The liners are made from a lamination that includes a sealing layer, a strength layer of stretch-resistant woven material that overlies the sealing layer, a support layer of non-woven resin-impregnated material that overlies the strength layer, and a barrier layer that overlies the support layer. The lamination is rolled into a tube and inverted when inserted into a pipe so that the barrier layer is the layer that abuts the interior wall of the pipe, the support layer underlies the barrier layer, the strength layer underlies the support layer and the sealing layer underlies the strength layer is contacted by materials flowing through the pipe.

Abstract: A liner tube for repairing existing pipes is provided. The liner tube is sufficient flexible to lie substantially flat under its own weight thereby defining an upper portion and a lower portion. The liner tube includes an inner layer, an outer layer disposed around the inner layer, a first intermediate layer disposed between the inner layer and the outer layer, the first intermediate layer being wrapped around the inner layer to overlap itself and define a first overlap portion in the upper portion, and a second intermediate layer disposed between the first intermediate layer and the outer layer, the second intermediate layer being wrapped around the first intermediate layer to overlap itself and define a second overlap portion in the lower portion. The first and second intermediate layers include a porous material and the inner layer includes material substantially impermeable to liquids. Systems used to manufacture the liner tube are also provided.

Abstract: A rehabilitating pipe segment for assembling a rehabilitating pipe inside an existing pipe. The rehabilitating pipe segment has first and second segment halves connectable together to provide for the rehabilitating pipe segment an internal surface plate and side and end plates surrounding peripheral edges of the internal surface plate. The first and second segment halves are configured to move relative to one another in a width direction of the rehabilitating pipe segment corresponding to a pipe length direction of the rehabilitating pipe so that the first and second pipe segment halves expand and contract to make the width of the rehabilitating pipe segment variable in the width direction of the rehabilitating pipe segment.

Abstract: A liner or core pipe which is suitable for insertion into a host pipe, the core pipe including, in certain aspects, a pipe made of temperature-resistant corrosion-resistant material and having an outer surface, an inner surface, a first end and a second end and a flow channel therethrough from the first end to the second end; first and second strengthening wraps around the pipe; a plurality of spaced-apart pulling tapes on the pipe; the pipe deformable to facilitate insertion into a host pipe, and a protective outer wrap on the pipe. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).

Abstract: A kit, apparatus, and method for sealing a junction between a manhole and a pipe within a sewer system are provided. In a first embodiment, the end of a pipe adjacent a manhole is sealed by the use of a pipe liner and a tubular sleeve made of a hydrophilic material. In a second embodiment, a majority of the area surrounding a junction of a pipe and a manhole is sealed by the use of a tubular sleeve made of a hydrophilic material including a flange portion, a pipe liner, and a manhole liner.

Abstract: A new apparatus for repairing a damaged portion of a pipe includes a liner having a tubular sleeve of resin absorbent material that includes a plastic film laminated to an exterior surface of the sleeve. The plastic film contains resinous material in the liner, and is modified to breech the integrity of the plastic film and expose the resinous material to a junction of a main and lateral pipe. A method of lining a junction of a main and lateral pipe using the liner is also provided.

Abstract: An apparatus and method is provided for lining the wall of a manhole. The apparatus may include a liner assembly, which includes an expansion device, an auxiliary bladder, a primary bladder, and a liner. The auxiliary bladder is first inflated near the top of the manhole. Next the primary bladder may be expanded to press the liner against the wall of the manhole. The liner, being impregnated with a resinous material, is pressed against the wall until the resinous material cures and hardens. The expansion device, auxiliary bladder, and primary bladder are then removed from the manhole. The result is a repaired manhole wall.

Abstract: A device and method for rehabilitating pipe connections is disclosed that simplifies the reliable transportation and positioning of a pipe lining relative to a junction region of a building service line to be lined. The device and method provides for rehabilitating the junction of a building connection from a main pipeline into the building service line. With a positioning device, a curable pipe lining may be positioned at the junction of the building service line and the main line and, with a transport device, the positioning device and the pipe lining may be transported to the junction. A detecting device may detect an extended position of the positioning device. The detecting device may include a winding box with a switch that is actuated when a cord has been pulled out of the winding box and which triggers a signaling device.