Abstract: A system and method for detecting passage of a pipeline pig, the system and method including a passive impulse detector (10) having a housing (13); a non-intrusive connection (15) of the housing to an exterior wall (17) of a pipeline (P), at least one vibration sensor (11) housed by the housing, and signal processing (23) including at least one band pass filter (27) configured to receive data collected by the vibration sensor, the vibration sensor and band pass filter configured to monitor frequencies in a predetermined range indicating a series of impulses caused by start-and-stop movement of the pipeline pig. The selected frequencies should be those more easily detectable above the baseline (signature or natural resonance) frequency of the section of pipeline being monitored. In some embodiments, the selected frequencies are lower frequencies. No portion of the passive pipeline pig signal intrudes into an interior of the pipeline.

Abstract: A friction stabilizer for supporting a rock ceiling in an underground mining environment is disclosed. The friction stabilizer has an external sheath and an internal rod. The internal rod is about 15% of the length of the external sheath. The internal rod has wedges at either end, arranged to engage with complementary wedges welded to the inside of the sheath.

Abstract: A method for constructing a dam inside a dump of an inner-dump strip mine includes: taking an upper surface connection line of a primary water-resisting layer as upper filling reference datum boundary of an artificial water-resisting layer; arranging a dam foundation pit and a trapezoidal abutment on a midline of the dam foundation pit; building and reinforcing a step-shaped retaining dam core wall on the artificial water-resisting layer; laying a foundation impervious layer, waterproof geotextile, and an earth blanket on one side, close to the primary aquifer, of the retaining dam core wall; strengthening advance of a dumping working face on one side, away from the primary aquifer, of the retaining dam core wall, and dumping overburden of a strip mine to form a support; filling a space between the earth blanket and the primary aquifer to form a blocker; and proceeding with construction and forming a continuous retaining dam.

Abstract: A pipe puller system and methods of pipe extraction are shown. In one example a pipe to be replaced is pulled by attaching a pulling force to multiple locations along a length of the pipe. In one example pulling forces can be varied between different attachment locations to better control or eliminate tearing of the pipe. In one example, a pipe loosening device may be used prior to pulling the pipe from the ground.

Abstract: The present application provides a semi-submersible immersed tube transportation and installation integrated ship and a construction process; the integrated ship includes: a deck structure; two floating structures, ballast water being able to be injected therein; and upper portions or top surfaces of the two floating structures are connected by the deck structure; and two support mechanisms, disposed on opposite sides of the two floating structures respectively; and each support mechanism is disposed at a lower portion or a bottom of the floating structure. The integrated ship can reduce the draught of the integrated ship carrying an immersed tube and realize the transportation requirements of shallow waterway.

Abstract: A stowable flood barrier system comprising: first and second barrier modules each comprising a frame and a barrier panel pivotable with respect to the frame between a stowed position and a deployed position, in which deployed position a base of the barrier panel is sealed against the frame and a free edge of the barrier panel extends clear of the frame to present a barrier segment between lateral edges of the barrier panel, wherein the first and second barrier modules are sealable together in the deployed position along the lateral edges of their respective barrier panels to form a linked flood barrier.

Abstract: A method and fixturing apparatus for manufacturing a suction caisson foundation includes providing an elevated center support and peripheral supports, elevating the foundation's prefabricated thumb section atop the center support, and temporarily securing radial frame members about the circumference of the prefabricated thumb section with the each frame member resting atop a respective peripheral support. The skirt panels are then affixed to the frame members, and the frame members to the prefabricated thumb section to thereby become self-supporting. The center support is removed from the interior of the resulting bucket, as by raising the peripheral supports to unload the center support, and lowering and dismantling the center support, whereupon additional panels are affixed to the frame members to define the foundation's lid, and further shaft sections added atop the prefabricated thumb section to complete the foundation.

Abstract: A seawall comprising a base with a top, a plurality of extensions on the top of the base, and an adhesive or sealant securing the extensions to the base. Each extension comprises a plurality of spaced apart rubber poles extending generally in a direction horizontal to the sea floor, and an outer rubber covering surrounding the poles. A method of increasing the height of a seawall comprising the steps of placing a plurality of the extensions on top of the seawall with the poles extending substantially parallel to the sea floor, and securing the extensions to the top of the seawall.

Abstract: A system and method for reducing the amount of infiltrate entering a sewer system is provided. The system generally comprises a locking sleeve, hydrophilic gasket, and a locking mechanism, wherein a lateral porthole of said locking sleeve is surrounded by said hydrophilic gasket. The system is preferably installed at a lateral line connection point, wherein a hydrophilic gasket located around the lateral porthole creates the water barrier that prevents infiltrate from entering a newly refurbished host pipe through the hole cut to reestablish flow from the lateral line to the host pipe at the lateral line connection point.

Abstract: A prefabricated part comprises a concrete body that has the form of a pipe section with two pipe ends and a pipe inner side. The pipe inner side is lined at least in some areas by a lining made of plastic material connected to the concrete body, and at least one of the pipe ends is covered at least in some areas by a molded part made of plastic material connected to the concrete body. At least the pipe end, which is covered at least in some areas, has a connecting joint in order to connect the pipe end to a pipe end of a further prefabricated part. The lining consists of a thermoplastic material and the molded part consists of a thermosetting plastic. The lining and the molded part are connected to each other in a sealed manner.

Abstract: A system for agricultural irrigation water oxygenation for enriching soil oxygen level comprises a source of compressed oxygen (and not compressed air) coupled to a water line feeding an irrigation system, such as a drip irrigation system. The coupling system may include a pressure sensor for measuring the pressure in the water line, a solenoid safety valve, a control valve, a flow meter and a controller that controls the flow of oxygen from the source of compressed liquid oxygen to the water line using the components of the coupling system, without using a special cavitation valve and using off-the-shelf components while achieving the same benefits as a system incorporating the special cavitation valve.

Abstract: A landfill gas recovery system includes a waste layer disposed in a landfill and a capping layer overlying the waste layer. The capping layer includes a cured sealing layer and a loose fill layer between the waste layer and the cured sealing layer. The loose fill layer includes a granular fill material. The cured sealing layer includes a composite of the granular fill material and a cured water soluble polymer. The cured sealing layer is substantially impermeable to landfill gases formed within the waste layer.

Abstract: An alignment and installation jig for a screw anchor driving machine. The alignment and installation jig includes a laser target that can be moved from an alignment position to a driving position. The jig may also include one or more automated crimping assemblies to form permanent connections between overlapping foundation components while the machine is correctly oriented.

Abstract: A cam system for use with a rotary steerable system, the cam system includes a housing, a cam positioned at least partially within the housing, and a solid cam shaft engaged with the cam and positioned at least partially within the housing, wherein the cam is operable to adjust an azimuthal orientation of the solid cam shaft.

Abstract: A vehicle is provided for installing in a prepared area along a ground surface a protective structural support proximate a buried pipeline in an automated manner. The vehicle includes a chassis with a plurality of wheels and a payload release mechanism coupled to the chassis and including a roller for holding the protective structural support. The payload release mechanism is configured to dispense and lay down the protective structural support in the prepared area. The vehicle includes a liquid dispensing mechanism that is coupled to the chassis and is located downstream of the payload release mechanism. The liquid dispensing mechanism includes a liquid source and a dispenser that is in fluid communication with the liquid source and is configured to dispense liquid across a spray area.

Abstract: A support system for a basket filled with a filler material for creating a privacy or noise protection barrier includes first support elements arranged in side-by-side spaced-apart relationship, second support elements arranged in opposition to the first support elements, and horizontal cross ties interconnecting the first and second support elements on their insides at a distance from one another. Mesh mats are further provided to interconnect the first and second support elements in a longitudinal direction of the support system on their outsides.

Abstract: A deployable cofferdam web-supporting frame assembly for a cofferdam system configured to be installed within a body of water to at least partially delimit therein an enclosure. The deployable cofferdam web-supporting frame assembly comprises first and second frame-supporting structures comprising first and second apexes and first and second groups of longitudinally extending frame-supporting legs each having a waterbed-engaging end, the first and second frame-supporting structure being configurable into a usage configuration wherein the frame-supporting legs are connected to each other with the waterbed-engaging ends thereof being spaced apart from one another, and a storage configuration wherein the frame-supporting legs are substantially parallel to each other; and a connecting assembly connecting the first and second apexes to each other. It also concerns a cofferdam system comprising the same and a corresponding method for delimiting an enclosure within a body of water.

Abstract: An instrument hose support device includes a rod that supports an instrument hose at a position higher than an instrument that is held by a holder, a pulley support portion that is supported by a distal end of the rod, a pulley that is supported by the pulley support portion and over which the instrument hose is looped. The distal end has a groove in which a taper is formed. A first member of the pulley support portion has a shaft protrusion, and a gap is formed between the shaft protrusion and the groove. The gap serves as the range of motion of the pulley support portion, and the pulley support portion follows the movement of the instrument hose and, relative to the rod, swings freely toward the front and the back and toward the sides and rotates freely with a movable axis (X) as an axis.

Abstract: A method for stabilizing and lifting a channel board by underwater grouting includes (A) when the channel board is damaged, removing the damaged channel board, cleaning and leveling a gravel layer under the damaged channel board, placing an undamaged channel board installed with first grouting pipes and a second grouting pipe on the gravel layer, wherein multiple geotextile bags are respectively bound to the first grouting pipes; when the channel board is subsided, installing first grouting pipes and a second grouting pipe into first grouting holes and a second grouting hole, respectively; (B) performing a first polymer grouting through the first grouting pipes, and performing a second polymer grouting through the second grouting pipe; (C) cutting off a part of the first grouting pipes the second grouting pipe which are exposed to the channel board, and leveling incisions; and (D) removing excess polymer left on the channel board.

Abstract: A structure and method for three-dimensional restoration of slope soil in an abandoned ion-absorbed rare earth mining area, belonging to the field of ecological restoration technologies. The structure for three-dimensional restoration of slope soil in an abandoned ion-absorbed rare earth mining area provided by the present invention includes an ecological water-harvesting pond, ecological intercepting ditches, an improved soil layer laid on the surface of a to-be-restored slope region and a soil restoration ecological network disposed on the improved soil layer. The improved soil layer, the ecological water-harvesting pond and the ecological intercepting ditches are each provided with a combined plant synusia system.