30results about How to "Guaranteed waterproof effect" patented technology

The invention provides a waterproof band, a waterproof structure between prefabricated parts and a construction method. The waterproof band comprises a plate band, wherein a band end which is thickerthan the plate band is arranged on the end of the plate band. The waterproof structure comprises two adjacent prefabricated parts, wherein reserved channels are formed in the prefabricated parts, thewaterproof band is arranged between the two prefabricated parts, and the band ends of the waterproof band are arranged in the reserved channels, so that the waterproof band has a waterproof function in a gap between the two prefabricated parts. The construction method comprises the step of arranging the band end on the end of the waterproof band in the reserved channels of the prefabricated partsafter the prefabricated parts are assembled and constructed so as to form the waterproof structure in the gap between the two adjacent prefabricated parts. The waterproof structure has the advantagesthat the problems of difficulty in sealing and water isolation and waterproof construction between the two adjacent prefabricated parts are solved, the gap between the two adjacent prefabricated partsis blocked through the waterproof band, the waterproof effect between the two adjacent prefabricated parts is effectively guaranteed, the structure is simple, and construction is convenient.

The invention discloses a modular coffer construction method for concrete without subsealing in the geologic condition of stratum: Firstly, a strutting piece and a guide frame are welded all around the outside of a steel barrel of a prepared cushion cap; Secondly, a lock steel pipe pile is downwards inserted along the guide frame, and the bottom of the lock steel pipe pile should reach the surface of a strong weathered rock; Thirdly, the inner of the steel pipe pile is downwards excavate vortically by a rotary drill rig, after deepening to the inner of a weak weathered rock, a drilled pile on the bottom of the steel pipe pile is constructed; Fourthly, after finishing all the drilled piles on the bottom of the steel pipe pile, a closed coffer is formed; Then, the river water in the coffer is drawn out and a support is installed in the coffer; After that, a submerged pump is arranged in coffer to draw out the percolating water, and then a foundation cleaning is dug by a digger to the bottom of the cushion cap; Finally, the concrete cushion is poured to the bottom of the cushion cap, and the cushion cap construction can be finished in the waterless and dry environment. The construction method has the advantages that the stratum does not need to be blown up under the water, the construction difficulties and amount are reduced, the whole stability of the coffer is strong, and the construction efficiency is high.

The invention discloses a construction method of earth cabin back filling and cabin entering operation during earth pressure shielding. The construction method comprises the following steps: (1) injecting bentonite slurry outside the casing of a shield machine; (2) injecting polyurethane outside the body of a shield to form a seal ring; (3) injecting two-liquid slurry outside a tube piece to form a seal ring; (4) replacing muck in an earth cabin with bentonite, and carrying out muck replacement through the cooperation of the a bentonite injection system and a spiral conveyer; (5) carrying out pressure injecting on low, middle and high-strength cement bentonite mortar slurry, and allowing the bentonite slurry in the earth cabin to form cumulates with certain strength; (6) injecting slurry to a cutting ring of the shield machine and the top of a cutter head; (7) carrying out cabin entering operation by constructors; and (8) closing an earth cabin door after cutter replacement is completed, injecting and back-filling bentonite to the earth cabin to establish an earth pressure balanced mode to restore tunneling. The construction method disclosed the invention breaks through the difficulty of cabin entering operation below a special unstable formation and the difficulty of cabin entering operation under a building during shielding, and has the characteristics of high efficiency, strong operability and the like.

The invention discloses a bottom-sealing water-stop structure for a deep foundation pit in a strong water-permeable stratum, which comprises an underground continuous wall, an underwater plain concrete board, a reinforced concrete partition wall, an uplift pile and an inner support, and the underground continuous wall is arranged around the foundation pit by pouring , the internal support is supported on the underground diaphragm wall, and the foundation pit under the underground diaphragm wall is poured to form a reinforced concrete partition wall, and the reinforced concrete partition wall and the underground diaphragm wall on each two sides are enclosed at the base to form a pouring For the warehouse, uplift piles are poured under the base of the warehouse, and each warehouse opening enclosed by the reinforced concrete partition wall and the underground diaphragm wall is poured to form an underwater plain concrete slab, and the above-mentioned uplift piles are embedded in the underwater plain Inside the concrete slab. The underwater plain concrete slab increases the overall strength and stiffness of the pit bottom, and has dual functions of pit bottom reinforcement and anti-seepage. It can better reduce the lateral displacement of the pit wall and the settlement deformation of the surrounding environment.

The invention discloses a method for penetrating an aquifer in an open-pit mine dump, which comprises the steps of blocking the original aquifer, rebuilding an artificial water-resisting layer, recreating the artificial aquifer, dredging the aquifer, artificially replenishing water, and the like. In the present invention, degradable plastics are used to block the original aquifer, which reduces the loss of water resources and ensures the safety of the mine pit; the raw materials for the construction of the artificial water-resisting layer come from the mining area, the construction difficulty is small, the cost is low, and the water-repelling effect is guaranteed; The aquifer adopts the form of an uplift in the middle to avoid the natural settlement of the inner dump site causing the aquifer to be compacted and subsidence or even blocked; the artificial aquifer is arranged in strips, and the construction of retaining walls reduces the impact of internal water pressure on the stability of the inner dump site. Realize artificial water replenishment in sub-regions in the later stage without letting water flow into the pit; adopt artificial water replenishment to accelerate the connection between the artificial aquifer and the original aquifer in the inner dump site, ensure the circulation of groundwater in the mining area, and use the pit water to reduce pit water waste.