Abstract: A coastal zone ecological protection and governance structure and a coastal zone ecological protection wall include a bottom plate, a triangular reinforcing supporting plate, and a side plate. The bottom plate is configured to fix on a foundation. The triangular reinforcing supporting plate is arranged on the bottom plate. The side plate is arranged on the bottom plate and is connected with the triangular reinforcing supporting plate. The side plate forms a certain angle with the bottom plate. All of the bottom plate, the triangular reinforcing supporting plate, and the side plate are spliced by a plurality of prefabricated plates.

Abstract: A panel system for the containment of landslides caused by partial collapses and also by “rock breakdowns”, for use in the fortification of mining tunnels, hillsides and roads, together with anchor bolts and plates, comprising a network constituted by straps of metal or other material resistant to traction or with the capacity of tearing along the strap (1) (2) (3), with each node of this network firmly linked with a buckle (6) (7) (8) (16) and with a frame (20) attached to this network, where the frame comprises flat tendons (17) near the perimeter of the panel, linked to plates with lugs (D11) or with flat connectors (12) (13) (14) (15) which go beneath the normal plates.

Abstract: A triadic recurve implosion flood navigation for in-situ tailoring yearn system—[TRINITY-D20] has a tailoring mechanism comprising a first unit having an arc-shaped first arcuate portion, and a second unit having an arc-shaped second arcuate portion, the first and second units stagger each other with concave arcuate surfaces facing opposite directions by center axes of curvature of the first and second arcuate portions parallelling each other to cause an arcuate end of the first arcuate portion locate between two arcuate ends of the second arcuate portion and separated from the concave arcuate surface of the second arcuate portion by a first distance, and to cause an arcuate end of the second arcuate portion locate between two arcuate ends of the first arcuate portion and separated from the first arcuate portion by a second distance, thereby the first and second arcuate portions jointly define a curved channel.

Abstract: A process and system is provided to allow rehabilitation of asbestos concrete (AC) pipe to remain in place while rendering the AC pipe harmless, in a manner that protects the ecosystem and saves huge amounts of money lost to bypass, digging, remediation and disposal. The method and system provide for encapsulation of the old AC pipe in place without any digging or disruption to the surrounding area. No dewatering is required, saving the costs required with dewatering. There is minimal disruption to the community's use of the piping system while completing the repair, as such repairs can be done on a manhole-to-manhole basis. Finally, there are no hazardous material disposal requirements, or the costs associated therewith.

Abstract: A soil disinfector comprising an insulating endless belt with at least one row of positive electrodes and at least one row of negative electrodes mounted on the endless belt. The electrodes are mounted with their heads on the inside of the belt and their bodies pointing outward from the belt, the electrodes being configured to penetrate the soil. The electrodes take their power from a power source, the power source being connected to the electrodes via sets of rows of rollers and sets of rows of stationary conductive contact plates, at least one set of each being positive and at least one set of each being negative. The soil disinfector also has sensors to detect soil conditions and a processor to alter power applied to the soil based on the soil conditions.

Abstract: The trench shoring apparatus includes first and second side panels connected in a parallel spaced-apart configuration by a connecting rod pivotally connected to one end of one or more pairs of lateral arms. The other opposite end of the one or more pairs of lateral arms is hingedly connected to the side panels, such that translational movement of the connecting rod in a direction parallel to the side panels causes the spaced-apart panels to move between retracted and extended parallel spaced-apart configurations.

Abstract: Disclosed is a method for preparing a mixture and the injection material to be used as soil injection material to close the pores after a certain gelling period by applying it to the pores in the silt size, including the steps of: (a) preparation of a mixture of sodium silicate with a SiO2/Na2O ratio of 3-4 and water so that their ratio by volume varies between 3/7 and 1/1; (b) obtaining a mixture by dissolving ultra-low sulfated boric acid in water, containing between 2.5-5% by weight of ultra-low sulfated boric acid; and (c) mixing the obtained ultra low sulfate boric acid-water mixture with sodium silicate in the step a.

Abstract: A method for constructing a steel sheet pile cofferdam is provided, including: step S1, determining a construction area of the steel sheet pile cofferdam; step S2, piling steel casings, and welding guide frame brackets to the steel casings, the guide frame brackets are connected with a guide frame and limiting clamp plates; step S3, piling steel sheet piles by relying on the guide frame; step S4, pouring subsealing concrete at a bottom of the steel sheet pile cofferdam; step S5, arranging purlins and internal supports within the steel sheet pile cofferdam; step S6, perform a secondary subsealing at the bottom of the steel sheet pile cofferdam; step S7, pumping water within the steel sheet pile cofferdam through a pump and pouring to form a bearing platform on the subsealing concrete; step S8, removing the steel sheet pile cofferdam after the bearing platform is formed.

Abstract: A bracing assembly for a geosynthetic wrapped system is provided. The bracing assembly includes a standing brace bar, a bottom brace bar, and a cross brace bar having different configurations to facilitate both easy and mistake free assembly of the bracing assembly. Furthermore, the standing brace bar and the bottom brace bar include guide tips that are sized and shaped to direct insertion of the standing brace bar and the bottom brace bar respectively into a weave of a geotextile fabric material such that a first connector of the bottom brace bar and a first connection slot of the standing brace bar are aligned together and with a fold line of the geotextile fabric material.

Abstract: The present disclosure provides a water-blocking device including a water-blocking plate installed on a floor of a passage, rails installed on both sidewalls of the floor, and a driving part configured to lift and lower the water-blocking plate, wherein, when the driving part is operated, the water-blocking plate is lifted and lowered along the rails.

Abstract: A trench shield securement device, comprising: a retention pin; and a retainer plate; wherein the retainer plate comprises an opening that is configured to surround and engage a trench shield top box pipe socket and a trench shield base box pipe socket that have been aligned and stacked; and wherein, after the retainer plate is engaged with said aligned and stacked pipe sockets, the retention pin is configured to be inserted into a center opening of the top box pipe socket and into a center opening of the base box pipe socket, such that said retainer plate is held substantially in place.

Abstract: The present invention belongs to the technical field of rock and soil reinforcement, and specifically relates to a plant urease-containing soil solidification agent and a zero-waste production process thereof. A crudely-purified plant urease solution includes a large amount of irrelevant proteins, which seriously affects the treatment effect of the soil solidification agent, makes it impossible to achieve an expected construction purpose, and also causes serious waste and environmental pollution. In the present invention, a common plant urease extraction method on the market is optimized to significantly reduce a protein concentration in a plant urease solution, greatly improve the infiltration performance of a plant urease-containing soil solidification agent, and broaden an application range of such a soil solidification agent.

Abstract: An in-pipe robot is provided with a rotary actuator 30 that rotates the drilling blade 21 in the circumferential direction of an existing pipe. A wheel body 50 provided with a traveling wheel 52 on both sides and a wheel body 70 provided with a traveling wheel 72 on both sides are supported between side frames 43 of a chassis via pins 54 and 74. The other ends of both the wheel bodies are rotatably coupled around an axle 63 of an intermediate wheel 65 as a pivot. When both the wheel bodies rotate, the intermediate wheels and the rotary actuator move above a horizontal line passing through the pin center. Each pin is disposed at the midpoint of a line connecting the center of the traveling wheel and the center of the intermediate wheel so that the rotation axis v1 of the rotary actuator coincides with the pipe center axis of the existing pipe.

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: A roadway access hole drill for cutting a square or rectangular access hole in a roadway having a first saw opposing a second saw and a third saw opposing a fourth saw. A method of cutting a microtrench in which the buried utility is exposed by opening a square or rectangular access hole in a roadway above the buried utility using the roadway access hole drill that is controlled by a computer system connected to an under-roadway detection unit that detects a buried utility and stops movement of the drill to avoid damaging the buried utility.

Abstract: A pile is comprised of a pipe, i.e., a hollow tube or hollow cylinder, with a coextensive internal reinforcement comprised of a plurality of intersecting walls. The pile is comprised of a blend of a thermoplastic and 20 to 50% (pbw) pelletized chopped strand glass fibers. The outer surface includes a co-extruded cap stock that is relatively smooth and exhibits a relatively low coefficient of friction. The internal structures exhibit roughness, bumpiness and a relatively high coefficient of friction for an extruded plastic. A groove may be formed in the pile adjacent to an end for resistance to uplift.

Abstract: A foundation reinforcement system may include an elongated beam, a first bracket assembly and a second bracket assembly. Each bracket assembly includes a shaft receiving portion and a seat portion. The seat portion includes a plurality of protruding members that protrude upwardly therefrom. The elongated beam is disposed atop the seat portion of the first bracket assembly such that at least one of the plurality of protruding members of the bracket assembly is disposed on each of opposing lateral sides of the elongated beam. The bracket assemblies are horizontally spaced-apart from each other. The elongated beam is disposed atop the seat portion of the second bracket assembly such that at least one of the plurality of protruding members of the second bracket assembly is disposed on each of opposing lateral sides of the elongated beam.

Abstract: The present invention discloses an ecological seawall water close side embankment slope drainage structure and a construction method thereof. The ecological seawall water close side embankment slope drainage structure includes a seawall, and further includes a wave dissipation ridge and water collecting wells, wherein the wave dissipation ridge is disposed at an upper side of the seawall, a drainage blind ditch is formed in an upper surface of the seawall, and the drainage blind ditch is matched with the wave dissipation ridge; the water collecting wells are distributed at a lower side of the drainage blind ditch at equal intervals, and lower end portions of the water collecting wells communicate with drainage concealed pipes; and pipe seats are disposed at a lower end portion of an inclined plane of the seawall, lower end portions of the drainage concealed pipes are fixedly connected onto the pipe seats, and flap valves are rotationally connected to lower end surfaces of the drainage concealed pipes.

Abstract: A wastewater leaching chamber having asymmetric corrugations running transversely along the length of the chamber, where each transverse corrugation has a wide section on one side and a narrow section on the opposed side of the chamber, such that the corrugation walls run at an angle to the longitudinal axis of the chamber. The widest corrugation side of the chamber has a large straight sidewall, and the corrugation forms an arch which curve across and downward from the top of the straight sidewall to the narrow side of the corrugation at the opposing base of the chamber. The asymmetric arch is comprised of a multi radius curve from the top of the straight side to the opposing base footer.

Abstract: A flood barrier module that is light, easy to install, easy to remove or stow, and resistant to softening of underlying ground includes an inclined front wall penetrated by holes near a top thereof, as well as side walls, a rear wall, and a base wall, which together surround a substantially watertight interior. The module is initially anchored by its own weight and/or by stakes or similar means. When impacted by flood waters that rise higher than the holes, the module is filled with flood water that is retained within the interior, such that the weight of the retained water anchors it to the ground, even if the ground becomes softened. Embodiments can be folded or disassembled and stacked into a flat, stowed configuration. The module can be installed in a sump or pit, and can be at or below grade when stowed.