The present invention discloses a rainfall sensing two-component high-polymer grouting device and a manufacturing method therefor, and belongs to the technical field of soil protection. The present invention includes an iron box and a water bucket. The water bucket is slidably fitted in the iron box. An inner bottom of the iron box is provided with a pair of lever upturning apparatuses symmetrically distributed about an axis center of the iron box. A lower surface of the iron box is provided with a curing agent ejector and a resin ejector. An end of two lever upturning apparatuses is slidably connected to a low surface of the water bucket. The switches of the curing agent ejector and the resin ejector are respectively connected to the other end of a lever upturning apparatus. A peripheral surface of the water bucket is provided with a permeable hole, and a permeable head is installed on the permeable hole. The present invention utilizes the lever principle of natural gravity and the spring-assisted method to realize the function of high-polymer grouting slope protection, and belongs to an ingenious mechanical structure apparatus. There is no need to stimulate and excite from the external energy, which is environmentally friendly and does not waste the resources and energy.

A trough plate for constructing a locked polymer anti-seepage wall includes a plate body, a guide tube, a grouting pipe and an anti-blocking head. A construction method of the locked polymer anti-seepage wall includes the steps of positioning an N.sup.th trough plate and then pressing the N.sup.th trough plate into ground, wherein N is a natural number larger than and equal to 1; engaging an (N+1).sup.th trough plate with the N.sup.th trough plate, and then pressing the (N+1).sup.th trough plate into the ground; connecting a grouting pipe of the N.sup.th trough plate with a grouting machine, pulling out the N.sup.th trough plate, and simultaneously grouting through the grouting pipe of the N.sup.th trough plate by the grouting machine; and repeating the steps (B) and (C) till the locked polymer anti-seepage wall is completed, wherein the steps (B) and (C) are repeated every time, N is automatically increased by 1.

A method of rehabbing reinforced concrete pilings while in service and without the requirement to demo or otherwise gain access over the ends of an existing column. Design adopts modern environmentally responsible fiber reinforced polymer rebar and other FRP stirrups uniquely shaped into spiral sections requiring only side access for placement, designed to permanently encase the piling with a totally non-rusting non-metal reinforcement lateral containment cage featuring preformed circumference stirrups that mechanically interlock vertically and lateral adjustability to control density. The spiral stirrups extending fully 360-degrees around an existing piling with an additional overlap of at least 45 degrees.

A plate for cribbing stacks having a top surface and a bottom surface, first, second, third, and fourth side surfaces connecting the top and bottom surfaces; a first level attached to the first side surface; and a second level attached to the second side surface, the first and second side surfaces being in a non-parallel relationship; and wherein the top and bottom surfaces and the first, second, third, and fourth side surfaces are arranged so that the first and second levels indicate when the plate is horizontal.

A solar energy system for use with tufted geosynthetics on sloping ground without the use of a traditional racking system. A frame attaches to the tufted geosynthetic cover to provide a flap and a solar panel secures to the flap directly or through a polymeric layer that attaches to the frame positioned between the flap and the tufted geosynthetic land cover with the solar panel adhesively attached to the polymeric layer. The solar panel being attached to the tufted geosynthetic land cover generates energy upon exposure to light. A method of securing a solar panel to a tufted geosynthetic land cover system for generation of energy is disclosed.

In one or more arrangements, a stackable pad system is provided. The system has a plurality of blocks with each block having a flat upper surface with an upward extending lip positioned at opposing ends of the flat upper surface. Each block has a flat lower surface with a downward extending lip positioned at opposing ends of the flat lower surface. In some arrangements, the system includes a bottom locking plate and a top locking plate. When placed together, in a stacked arrangement, wherein a bottom most pair of blocks are stacked on top of the bottom locking plate with bottom lips fitting within the recesses of the bottom locking plate, additional pairs of blocks are stacked on the first pair of blocks and the top locking plate placed on the top most pair blocks, the blocks are all locked together and resist shifting and movement.

A coating film capable of being peeled off in the shape of sheet to facilitate a coating film removal work, and is less likely to peel even after long periods of use on an underwater structure is provided. The coating film comprises an undercoat layer to be bonded to an underwater structure, and an antifouling layer bonded to the undercoat layer, wherein: a 100-gram underwater constant load peeling degree of the coating film is less than 5; a ratio of a tensile breaking strength of the coating film to an adhesive force of the coating film with respect to the underwater structure, as measured after immersing the coating film in pure water at 60° C. for 5 weeks is 1.5 or more; and a 1-mm square cross-cut stretching-caused peeling degree of the antifouling layer with respect to the undercoat layer is 0.05 or less.

An offshore structure having a foundation structure, wherein the foundation structure has at least a first and a second profile, the first profile is designed as a pile and the second profile is designed as a pile sleeve, the second profile encloses the first profile over a penetration length, wherein an interspace is formed between the first and the second profile, the interspace has a casting compound filling over the total penetration length, shear elements are provided on the first and/or the second profile, the shear elements extend into the interspace and effect an axial load dissipation into the casting compound filling, the shear elements are provided only over a first partial length of the penetration length, the first partial length is between 65 and 90% of the total penetration length and a second partial length is free of shear elements, wherein the second partial length forms the upper length of the penetration length in the installed position.

A polymer geo-injection apparatus for protecting an underground structure is provided. The apparatus includes: a drill bit configured to drill a path through the ground to a desired depth that is above the underground structure; an injection nozzle coupled to the drill bit and configured to insert into and withdraw from the ground along the drilled path, and to create a corresponding cavity in the ground at the desired depth by injecting compressed air into the ground at the desired depth; and a polymer melting and injection unit configured to fuse or melt one or more components of a solid polymer into a liquid form of the solid polymer, and supply the liquid polymer to the injection nozzle. The injection nozzle is further configured to fabricate a corresponding protection slab of the solid polymer at the desired depth by injecting the supplied liquid polymer into the corresponding cavity.

A height adjustable device pit (10) is provided for use in installing water meters (12) or other equipment below ground level. The device pit (10) includes a lower housing section (14), an upper housing section (16), and a lid (18). The lower housing section (14) and the upper housing section (16) are engaged with each other by mating screw threads (20) and (22) that are centered on a vertical, longitudinal axis (24). The housing sections (14,16) are movable relative to each other along the longitudinal axis (24) to adjust the vertical height of the device pit (10) in response to relative rotation of the housing sections (14) and (16) about the longitudinal axis (24).