Abstract: The present invention provides a self-drilling and self-anchoring extendable anchor rod applicable to soft and weak coal rocks and an anchoring method thereof, which are suitable for supporting soft and weak coal rock mass in roadways.

Abstract: A frame rail assembly for a boat dock structure includes a frame rail member and a removable resilient rub-rail member. The frame rail member includes a first side configured for securing the frame rail member to a side of the boat dock structure; a second side opposing the first side; a first channel extending along a length of the frame rail member; and a second channel below the first channel, the second channel extending along the length of the frame rail member. An interlocking frame rail system for boat dock structures includes a first frame rail member, a second frame rail member, and an upper connector member extending along at least a portion of a length of the first frame rail member and at least a portion of the length of a second frame rail member.

Abstract: A pumpable resin system for installation of mine roof bolts includes a resin reservoir configured to receive resin, a catalyst reservoir configured to receive catalyst, a resin pump arrangement in fluid communication with the resin reservoir, a catalyst pump arrangement in fluid communication with the catalyst reservoir, a delivery line in fluid communication with at least one of the resin pump arrangement and the catalyst pump arrangement, and a bolter arm configured to drill boreholes and install mine roof bolts. The delivery line is configured to deliver resin and catalyst from the resin reservoir and the catalyst reservoir to a borehole via the bolter arm.

Abstract: A precast H block (3) interlock each other to form sloping wall and similarly precast Y block (10) interlock each other to form straight wall, both block having a pin hole (4) through side walls. A wire rope (5) passing through said pin hole to make a wall strengthened by nailing horizontally (14) into the earth (8) adjacent to the block and vertically nailing (9) at top and bottom level. As well as wire rope (5) passing through said pin hole (4) of uppermost blocks, from underneath the road, to make a wall/barrier strengthened by nailing vertically (9) into the earth across the road (2).

Abstract: In certain embodiments, a cap repair assembly includes first and second pile brackets for rigid mounting onto first and second piles of a pier; a cap beam for rigid mounting onto super-structure of the pier; first and second cap beam plates for rigid mounting onto the cap beam at different ends of the cap beam; first and second compression arms rotatably connected (i) at first ends to the first and second pile brackets and (ii) at second ends to the first and second cap beam plates. The cap repair assembly restores the load capacity of damaged or degraded piers. The cap repair assembly can further include one or more steel banding straps.

Abstract: An apparatus for backfilling a trench and, more particularly, an apparatus for laying a pipeline bed layer in a trench and for laying a pipeline bedding layer once a pipeline is laid in the trench. The apparatus comprises a multi-deck screen vibrating unit. The upper deck screen comprises finger tines or a grizzly arrangement.

Abstract: The invention relates to an arrangement for vertically introducing drainage ribbons into a subsoil, comprising an hollow mandrel and a drainage ribbon that is fed through the mandrel, wherein the mandrel comprises a permanent section with a first elongate mandrel profile and a mandrel drive, and a replacement section at the end of the mandrel, wherein the replacement section comprises a second elongate mandrel profile that is joint with the end of the first mandrel profile by means of a weld, a bottom face at the bottom end of the second mandrel profile, and a push bar and a spring that biases the push bar towards its extended position with respect to the bottom face, wherein the mandrel drive comprises a drive cable that extends through the hollow mandrel and that is at one end operatively connected with the push bar by means of a releasable coupling.

Abstract: Flexible containment tubes form sections of a dike for fluid containment. Structural supports are inserted into the flexible contain tubes and the tube sealed to form structure supported dike sections. For example, a supporting structure may be configured with a given length and cross sectional diameter to provide structural support to a vinyl-coated polyester tube with a 12-36 inch diameter. The structure is sealed within the tube and, in turn, the tube may be filled with a fluid such as water to create structure supported containment dike. The length of the supporting structure may be selected based on the width of an entryway to create structure supported dike section of a give length that provide a seal across the entryways against floodwaters.

Abstract: A simplified and improved pistonless cylinder based on an Aramid fiber reinforced elastomer tubular which is highly stiff in radial direction against radial expansion and elastic in axial extension, so as to form a completely sealed and extendable pressure chamber and to be able to perform as well as, or better than, most of the conventional hydraulic cylinders in terms of load bearing capacities, maximum stroke distances and service durability. This simplified cylinder employs no piston, piston rod, sealing seals or oil based hydraulic fluid, and utilizes non-metal materials to construct the majority of the parts for its extendable pressure chamber; therefore, this new cylinder can achieve significant weight and fabrication cost reduction. In addition, this new pistonless cylinder uses ordinary liquids, e.g., fresh water or seawater, as its hydraulic fluid, and can work directly as a hydraulic or pneumatic cylinder interchangeably without a need for much, if any, modification.

Abstract: A wall element for holding back water is formed in one piece and has a planar, rectangular main portion having a first side, a second side parallel to the first side, a third side perpendicular to the first side, and a fourth side parallel to the third side. A first planar bearing portion is connected to the main portion over the first side and perpendicular to the main portion. A second planar bearing portion is connected to the main portion over the second side and perpendicular to the main portion. The second bearing portion is opposite the first bearing portion. The wall element has a planar connecting portion connected to the main portion over the third side and inclined to the main portion. The connecting portion has connecting holes in the longitudinal direction, and the main portion has connecting holes along the longitudinal extent of the fourth side.

Abstract: An automatic water control system for open ditch drainage includes a drainage control apparatus that is designed to be disposed in a drainage ditch and to control the water level in the drainage ditch, as well as the water table level in the field.

Abstract: A roadway conduit system includes a roadway conduit section that includes a floor portion with roadway surface configured to receive traveling vehicles, a ceiling portion, and at least one sidewall portion coupled to the floor portion and the ceiling portion such that the floor, ceiling, and at least one sidewall portions define a roadway conduit volume through which the traveling vehicles traverse the roadway conduit section. The roadway conduit section includes at least two fixedly connected preformed segments. The roadway conduit system also includes a roadway conduit ingress coupled to a first location of the roadway conduit section; a roadway conduit egress coupled to a second location of the roadway conduit section; and at least one air mover configured to circulate an airflow in the roadway conduit volume in a direction of at least one of the traveling vehicles.

Abstract: A device for protecting against the scouring of granular fillings submerged in gravity structures in which a filling with granular materials must be deposited once the structures are submerged, so that the structures reach a weight sufficient to en sure the stability thereof against the actions to which they are subjected. The device consists of one or more porous covers that sit and/or are secured as an upper closure of the structure to protect the inner filling, each of the covers having a plurality of openings that are distributed on the surface thereof and have a size suitable to allow the passage of the filling material, which filling material is transferred to the inside of the structure simply by pouring until a height close to the cover is reached, leaving a margin or chamber between the two that is suitable for generating an internal turbulence that dissipates wave energy and incident currents, thereby making it difficult for the filling material to escape from the inside through the openings.

Abstract: A process for installing a modular retaining wall is illustrated and described having open or closed polygonal modules with channels disposed therein. The wall is set at least partially below a surface, the surface either being land-based or aqueous-based, and interfaces therebetween, e.g., shoreline. The modules of the wall are fastened to each other by respective fastening mating fasteners. The retaining wall is installed by a process employing a fluid-assisted internal mandrel.

Abstract: A transfer mechanism (28) for providing linear vertical displacement of a fitting (46) on a flexible tubular conduit (48). The transfer mechanism includes a clamping mechanism (34) adapted to connect and secure a fitting (46) on a flexible tubular conduit (48) to the transfer mechanism (28); and a conveyor system (30) configured to linearly displace the clamping mechanism (34) from a first position towards a second position.

Abstract: An apparatus and method is provided for repairing an underground structure such as a pipe or manhole. The apparatus includes a liner assembly made of resin absorbent material. Some embodiments may further include a bladder assembly to help position the liner and press the liner against the walls of the underground structure. A sealing member is positioned in the underground structure. In some embodiments the sealing member is a separate member made from a compressible material, an absorbent material, or a hydrophilic or hydrophobic material. In other embodiments the sealing member is a portion of the liner assembly. The sealing member includes one or more channels adapted to receive a semi-liquid such as a hydrophilic or hydrophobic paste or grout. The semi-liquid is capable of swelling in response to being exposed to another liquid, such as water, and forms a seal between the liner assembly and the host pipe/manhole.

Abstract: A method transports and installs a heavy subsea structure such as a subsea processing center for produced crude oil or natural gas. The method includes controlledly flooding at least one ballast tank attached to or incorporated into the structure to the extent that the structure becomes negatively buoyant at a pre-determined towing depth. The method also includes towing the negatively-buoyant structure at the towing depth by the Controlled Depth Towing Method (CDTM). After towing to the installation location, the method includes further flooding the ballast tank to lower the structure onto the seabed. At the seabed, a fluid transportation pipe of a subsea production installation may be coupled to pipework of the structure.

Abstract: A portable cofferdam system for isolating a working area from water such as a culvert. The portable cofferdam system generally includes a first sidewall and a second sidewall each having an interior side, an exterior side, an upper edge, a lower edge and a rear edge. A middle wall is connected to the sidewalls opposite of the rear edges of the sidewalls forming a substantially U-shaped structure. An opening formed between the rear edges of the first sidewall and the second sidewall to allow for positioning about or near the inlet of an object or area to be kept dry such as the inlet of a culvert.

Abstract: A cementitious composite for in-situ hydration includes a structure layer having a first side and an opposing second side, a cementitious material disposed within the structure layer, a sealing layer disposed along and coupled to the first side of the structure layer, and a containment layer disposed along the opposing second side of the structure layer. The structure layer has an intersection at the sealing layer and the containment layer that is at least partially fiberless. The cementitious material includes a plurality of cementitious particles. The containment layer is configured to prevent the plurality of cementitious particles from migrating out of the structure layer.

Abstract: A plastic leaching unit for receiving water when buried in trenches in soil comprises a plurality of pillars interconnected by struts. A canopy made of sheet material is attached to the tops of the pillars. The pillars are arranged as spaced apart integral assemblies to enable lateral and vertical bending of the leaching unit, for conforming to a not-straight trench. Preferably, the canopy comprises a second perforated sheet overlying a first sheet having larger perforations, the combination arranged for flow of water and gases while hindering soil particulates. Preferably, the canopy extends a greater amount from the first end of each unit than from the second end, to facilitate end-to-end mating of the units. Leaching units may be stacked one upon the other within a trench.