20results about How to "Good waterproof" patented technology

The invention discloses a construction method of an improved lock catch steel pipe pile cofferdam with a poor sand large-particle-size pebble covering stratum. The construction method comprises the following steps that an upper structure of a drilling platform is dismantled; measuring and setting out a pile position of the lock catch steel pipe pile cofferdam, sinking and positioning the steel pipe pile cofferdam by adopting a crawler crane and a vibratory hammer, and preliminarily entering a pebble bed; driving a pipe pile to a set elevation by utilizing a hydraulic impact hammer; for a steel pipe pile which is difficult in drilling footage or provided with boulders at the bottom, an XR280 rotary drilling guide hole is adopted; the steel pipe piles are smoothly closed; cofferdam water pumping; a small excavator is adopted for internal excavation, slag is discharged in a long arm excavation up-and-down transfer mode, a local rock stratum is firstly crushed and then excavated through a crushing hammer, water is pumped to the position 70 cm below an inner support of the road, and after the inner support is installed, water pumping continues to be conducted; and bottom sealing, pile head breaking and pile cap construction are carried out. By means of the construction method, the problems that the double-wall steel cofferdam is difficult to put down and level, and the site requirement is high can be effectively solved; the defects that a long steel sheet pile cofferdam is low in rigidity, prone to deformation and poor in water stopping effect are overcome. Through the cofferdam construction technology of the hydraulic impact hammer and the guide hole in the pipe of the rotary drilling rig, the hydraulic impact hammer is used for driving the steel pipe pile, the guide hole in the pipe of the rotary drilling rig and the pile-forming construction of a single pipe pile only need 10 minutes, and the construction period is greatly shortened.

The utility model relates to the technical field of water-cooled condensers, and discloses an automobile water-cooled condenser which comprises a condenser sealing strip, detachable fixed supporting plates are fixedly installed on the front face of the condenser sealing strip in an axial symmetry mode, fixed heat dissipation fins are fixedly installed on the back faces of the detachable fixed supporting plates, and the fixed heat dissipation fins are fixedly installed on the back faces of the detachable fixed supporting plates. A fixed cooling circulation pipe is fixedly installed in the fixed cooling fin and close to the center, supporting base connecting plates are fixedly installed at the bottom of the condenser sealing strip in an axial symmetry mode, and base connecting holes are formed in the tops of the supporting base connecting plates and close to the center. A fixed water outlet pipeline is fixedly installed on one side, close to the front face, of the fixed cooling circulating pipe, a fixed water outlet connecting opening is formed in the position, close to the center, of the interior of the fixed water outlet pipeline, and the detachable fixed supporting plate is arranged, so that equipment can be mounted and dismounted, maintenance and inspection of the equipment are facilitated, and operation of the equipment caused by dust accumulation is reduced; the structure is simple and operation is convenient.

This application relates to a traction-type continuous core membrane water-stopping system, comprising an undisturbed soil mixing body (2), a closed or long continuous core membrane (1) erected in the undisturbed soil mixing body (2) after implementation, and auxiliary components (3) for sealing nodes. The implementation components for forming this water-stopping system include the core membrane (1), a casing (4) containing the core membrane (1) and a forwarding device (5), the forwarding device (5), an implantation device (6), a traction rope (8), and a traction device (7). The forwarding device (5) connects the traction rope (8) and the core membrane (1) and pulls the built-in core membrane (1) forward and unfolds within the undisturbed soil mixing body (2). The traction device (7) pulls the forwarding device (5) and the core membrane (1) unfold within the undisturbed soil mixing body (2). This system can be effectively implemented and forms a continuous and reliable water-stopping structure. It has a fast construction speed, good water-stopping effect, and low cost, and is especially suitable for foundation pit and slope water-stopping.

The application discloses a flood releasing device for hydraulic engineering, which comprises a flood releasing base, a water retaining wall and a flood releasing gate, a flood releasing groove is formed in the flood releasing base, the flood releasing gate is arranged on one side of the flood releasing groove, the flood releasing gate comprises a gate, a portal frame, a screw rod, a driving assembly and a hand wheel, a flood releasing hole is formed in the gate, the portal frame is fixedly arranged on the top of the flood releasing base, a sliding groove is formed in the portal frame and the flood releasing base, and the gate is slidably connected with the sliding groove. The flood releasing device for hydraulic engineering integrates a separate opening and closing assembly on the main gate, when only small flow needs to be released, the heavy main gate does not need to be driven, and only by controlling the opening degree of the cover gate, stepless and fine adjustment of the flow can be realized, the operation response is fast, the energy consumption is low, when large flow needs to be released, the cover gate can be closed first, then the main gate is lifted, full opening degree flow releasing is realized, and the flexibility and working condition adaptability of the flood releasing operation are enhanced.

The present invention relates to a multifunctional drainage hole orifice device that is adaptive to irregular hole wall structures. The orifice device includes a main pipe, an end cover, a pressure ring and a pressure cover. The main pipe is provided with an end cover at one end and a pressure cover at the other end. A plurality of pressure rings are sleeved on the main pipe, and the plurality of pressure rings are arranged between the end cover and the pressure cover. Rubber rings and water-expandable water-stop rings are alternately arranged between adjacent pressure rings. The present invention solves a series of problems that the existing orifice device is not adapted to irregular hole wall structures, has a single purpose, is not adaptable, is inconvenient to install, has insufficient anchoring force, has a small flow area, and is inconvenient to repair. Compared with the existing drainage hole orifice device, the present invention is adapted to various irregular hole wall structures and has a good water-stopping effect. A plurality of water-expandable water-stop rings are used to replace elastic rubber rings. When there is water in the drainage hole, the water-expandable water-stop ring will further expand fully to actively fill the irregular gaps, ensure close contact with the irregular hole wall, and exert a good water-stopping effect.

The utility model relates to a surface heat-preservation composite coating structure of a steel pipe, which comprises a primer layer, a high-temperature-resistant ceramic particle heat-preservation layer, a ceramic particle heat-insulation heat-preservation layer and a protective layer, the primer layer is used for being arranged on the outer side surface of a steel pipe in a coating mode, the high-temperature-resistant ceramic particle heat preservation layer is arranged on the primer layer in a coating mode, the ceramic particle heat insulation layer is arranged on the high-temperature-resistant ceramic particle heat preservation layer in a coating mode, and the protective layer is arranged on the ceramic particle heat insulation layer in a coating mode. The surface heat preservation composite coating structure of the steel pipe has the functions of cracking prevention, hollowing prevention, falling prevention and the like, and is good in heat preservation effect, high in impact resistance and long in service life.

The invention relates to the technical field of building waterproofing, and particularly discloses a water stop structure for a building foundation and a construction method thereof.The water stop structure comprises a first ground beam and a second ground beam, a post-cast strip is poured between the first ground beam and the second ground beam, and anchor rods are arranged on the two sides of the outer surface of the post-cast strip; fixing frames are clamped to the two sides of the outer surface of the post-cast strip through anchor rods, cavities are formed in the bottoms of the fixing frames, and backflow assemblies are arranged in the cavities. By arranging the backflow assembly, a good water stopping effect can be achieved at the joint of the post-cast strip, and corrosion of steel bars in the post-cast strip is reduced; by arranging the drainage assembly, the probability of silt blockage in the overflow groove can be reduced, and the stability of the backflow assembly in the operation process is guaranteed; and by arranging the extrusion assembly, the friction force between the water-stop belt and the post-cast strip can be increased, the contact tightness of the water-stop belt and the post-cast strip is further improved, and then the sealing effect of the seam of the water-stop belt can be effectively improved.

The present invention discloses a steel-concrete combined wedge-shaped waterstop structure, including a channel foundation and a waterstop block, wherein the channel foundation has a wedge-shaped channel, the waterstop block is a wedge-shaped structure matching the shape of the wedge-shaped channel, and rubber waterstop strips are arranged on the bottom surface and both sides where the waterstop block is in contact with the wedge-shaped channel body. The present invention can convert the unidirectional water pressure borne by the end of the structure into an extrusion force on the rubber waterstop strip on the side by designing the channel of the wedge-shaped structure to cooperate with the waterstop block, and the dock door load on the top can be converted into an extrusion force on the rubber waterstop strip on the bottom. The greater the pressure, the tighter the rubber waterstop strip is pressed, and the better the waterstop effect is, thereby achieving a good waterstop effect. The waterstop steel plate and the rubber waterstop strip are designed to jointly form a continuous waterstop surface, thereby ensuring the waterstop performance of the structure; the guide steel plate with a slope is designed to ensure that the waterstop block is accurately positioned and bottomed, thereby realizing automatic positioning and pre-tightening during installation.

The utility model relates to a water stop strip mounting structure between new concrete and old concrete of a gate culvert. The device is installed between an old concrete structure and a new concrete structure. Comprising a cutting groove formed in the middle of the vertical face of the old concrete structure, a water-swelling water stop belt is installed in the cutting groove, a water stop piece is arranged in the cutting groove, the inner end edge of the water stop piece makes contact with the water-swelling water stop belt, a left pressing plate and a right pressing plate are installed on the vertical face of the old concrete structure, and the two pressing plates clamp the water stop piece. The interior of the cutting groove is grouted to form a grouting body, an epoxy mortar layer covering the pressing plate is arranged on the vertical face of the old concrete structure, a polyethylene high-pressure closed-pore plate is arranged on the outer side of the epoxy mortar layer, and the outer side edge of the polyethylene high-pressure closed-pore plate makes contact with the water stop piece. The part, located outside, of the water stop strip is integrally poured and formed in the new concrete structure, and the polyethylene high-pressure closed-pore plate is located between the epoxy mortar layer and the vertical face of the new concrete structure. The installation structure overcomes the defects that a water stop piece is not firmly installed, the water stop effect is poor, and construction is inconvenient in an existing installation structure.

The utility model belongs to the technical field of building and municipal construction, and particularly discloses a foundation pit decompression dewatering well water stop reinforcing structure which is arranged between a well casing and a dewatering well hole wall and comprises a filter material layer, a clay ball layer and at least one reinforcing unit which are arranged in a filling mode from bottom to top. The reinforcing unit comprises a grouting layer and a concrete layer arranged above the grouting layer; each grouting layer is provided with at least one reserved grouting pipe, each reserved grouting pipe is vertically arranged, the top end of each reserved grouting pipe penetrates out of the uppermost concrete layer, and a plurality of grout discharging holes are formed in a pipe body of each reserved grouting pipe; the arrangement height of the filter material layer is not lower than the top end of the well casing filter pipe section. According to the water stop reinforcing structure, through the design of the combined structure of the clay ball layer, the grouting layer, the concrete layer and the reserved grouting pipe, it is guaranteed that the pressure reducing and dewatering well does not inrush during excavation of the foundation pit, the construction safety of the foundation pit is improved, and the manufacturing cost is saved.

The invention relates to the technical field of diversion tunnel construction, in particular to a construction method of a shield end reinforcing structure. A three-shaft mixing pile and high-pressure jet grouting pile combined reinforcing construction method is adopted to construct a formed end reinforcing body; a high-pressure jet grouting pile construction method is adopted to construct and form the retaining wall; a cement mixing pile TRD construction method is adopted to construct and form the water stop curtain wall; a cement mixing pile TRD construction method is adopted to construct and form the lining wall; and after the construction of the main body structure is completed, the gap between the lining wall and the water stop curtain wall adopts a triple-pipe high-pressure jet grouting pile construction method to form the caulking reinforcing layer. Thus, on one hand, the structural stability of the caulking reinforcing layer is extremely high, the caulking reinforcing layer keeps good bonding strength relative to the water stop curtain wall and the lining wall, and the generation process of water seepage cracks is restrained; and on the other hand, the lining wall is extremely good in continuity and has good waterstop performance, and even in the face of complex geological conditions, the structural steel inserted in the construction process is beneficial to improving the construction safety during tunnel portal chiseling.

The utility model belongs to the technical field of underground engineering, and particularly relates to a pipe jacking shell abandoning receiving waterproof structure which is used for connecting a pipe jacking machine shell reserved in a tunnel with a station tunnel portal and a prefabricated pipe joint. Comprising a flexible waterproof structure arranged between a pipe jacking machine shell and a prefabricated pipe joint and a water stop waterproof structure arranged between the pipe jacking machine shell and a station tunnel portal. Wherein the flexible waterproof structure comprises a wedge-shaped waterproof combination arranged at the bell and spigot joint of the pipe jacking machine shell and the prefabricated pipe joint and an elastic waterproof combination arranged at the joint of a tail annular rib plate of the pipe jacking machine shell and the section of the prefabricated pipe joint; the water stopping and preventing structure comprises an L-shaped steel plate arranged along the periphery of the station tunnel portal, and the L-shaped steel plate and a pipe jacking machine shell are rapidly welded and filled with slurry in a grouting mode to form a closed water stopping mode. The device is low in construction risk, low in construction cost, small in influence on the surrounding environment and capable of being used for pipe jacking shell abandoning receiving construction under various complex stratums under the condition that the surrounding environment is complex and no receiving well construction space exists.

The present invention relates to the technical field of fireproof cables, and in particular to a low-temperature porcelain-forming fireproof cable and its production process, comprising a plurality of wire cores, the plurality of wire cores are evenly distributed, the plurality of wire cores are extruded with an oxygen-isolating layer outside, the oxygen-isolating layer and the wire core are filled with an expansion filler, the oxygen-isolating layer is wrapped with a flame-retardant tape outside, a sheath layer is arranged outside the flame-retardant tape, the wire core comprises a conductor, a fire-resistant layer and an insulating layer, the fire-resistant layer is wrapped outside the conductor, the insulating layer is extruded outside the fire-resistant layer, and the expansion filler is filled between the insulating layer and the oxygen-isolating layer. The purpose of the present invention is to solve the problems pointed out in the above-mentioned background technology, so that the fireproof cable can be porcelainized at a low temperature when encountering a fire, which is beneficial to the transmission of electricity, and after porcelainization, it will not be broken down due to the peeling of the insulating layer caused by the vibration and impact of disaster relief.

The present invention provides a shield end shaft reinforcement structure capable of absorbing extrusion deformation and a construction method thereof, the reinforcement structure comprising a first vertical reinforcement layer, a second vertical reinforcement layer coated outside the first vertical reinforcement layer, and a rotary jet pile reinforcement layer filled between the first vertical reinforcement layer, the second vertical reinforcement layer and the end shaft side wall; the first vertical reinforcement layer covers the tunnel construction area and the edges on all sides extend outward beyond the tunnel construction area. The reinforcement structure provided by the present invention is formed by a first vertical reinforcement layer of solidified soil mixed with foam having extremely strong impermeability and deformation absorption performance, and a second vertical reinforcement layer of cement solidified soil having excellent impermeability and whole plate performance. Compared with the traditional single cement soil reinforcement structure, it has a good ability to absorb extrusion deformation, avoids the generation of a large number of through cracks in the reinforcement area when the shield passes, reduces the occurrence of water and sand gushing in the starting and receiving stages of the shield, and greatly improves the construction safety.

The utility model discloses a full recovery type pile anchor support construction structure which comprises an inclined pile and a recoverable anchor rod, the inclined pile comprises a plurality of steel pipe PC inclined piles which are arranged at intervals, rabbets are formed in the two sides of the steel pipe PC inclined piles, the top of the recoverable anchor rod is connected with the steel pipe PC inclined piles, and the bottom of the recoverable anchor rod is arranged far away from the steel pipe PC inclined piles. The recyclable anchor rod comprises a prefabricated anchoring pier, a metal corrugated pipe, a round steel anchor rod body, a grouting body, a gasket and a locking nut, the metal corrugated pipe is fixedly connected with the prefabricated anchoring pier, and the round steel anchor rod body is installed in the metal corrugated pipe. One end of the round steel anchor rod is in threaded connection with the prefabricated anchoring pier, the other end of the round steel anchor rod extends out of the metal corrugated pipe and is fixed to the steel pipe PC inclined pile through the gasket and the locking nut, and the prefabricated anchoring pier and the metal corrugated pipe are wrapped with the grouting body. The utility model has the advantages that the steel pipe PC inclined pile is combined with the recoverable anchor rod, so that the support material is fully recovered and can be reused, the cost and environmental influence are reduced, and the device is environment-friendly, economical, safe and efficient.

The invention discloses a jacking pipe opening annular pressure type water stop construction method which comprises the steps that firstly, it is checked that an annular pressure unit is intact and free of defects, and the diameter of the minimum position of the annular pressure unit is matched with the outer diameter of a jacking pipe; secondly, a water stop unit is installed on the annular pressure unit in a detachable connecting mode, the water stop unit is designed to be provided with double water stop rings, and a sealing unit is installed between the double water stop rings in the process of installing the water stop unit; thirdly, the annular pressure unit, the water stop unit and the sealing unit are integrally hoisted to a to-be-installed position, and the annular pressure unit is fixed to the well wall of the working well through a fastening unit and located at the edge of a pipe jacking hole; fourthly, the jacking pipe is jacked in a segmented jacking mode, and the water stopping parts of the water stopping units and the sealing units are attached to the outer wall of the jacking pipe; fifthly, after the pipe jacking is completed, the annular pressure unit is detached from the well wall of the working well, the annular pressure unit, the water stopping unit and the sealing unit are integrally hoisted out of the working well, and the construction method is easy and convenient to operate and good in water stopping effect.

This utility model belongs to the field of hydropower station construction technology, specifically relating to a novel compressive structural joint for high concrete-faced rockfill dams. It includes a compressive concrete face and a T-shaped concrete cover plate, both formed by two-stage casting, with the T-shaped cover plate cast on top of the compressive concrete face. A waterstop is installed at the bottom between the compressive concrete face and the T-shaped cover plate; the upper part of the waterstop is filled with asphalt-impregnated fir board, and asphalt felt is placed between the cast surfaces of the compressive concrete face and the T-shaped cover plate. This novel compressive structural joint, through its innovative double-joint design and the filling of the joint with asphalt-impregnated fir board—a compressible filler—effectively absorbs the axial deformation of the high concrete-faced rockfill dam, significantly reducing the horizontal compressive strain of the face and fundamentally avoiding the problem of face crushing failure due to excessive compressive stress.

This invention discloses a method for using a mobile steel dam, comprising a pair of steel dam lifting guide rails and a mobile steel dam body. The mobile steel dam body includes a pontoon and a water injection / drainage system. The steps for closing the dam are as follows: A1. Move the mobile steel dam body to a position matching the steel dam lifting guide rails and moor it to a mooring bollard using nylon ropes or steel wire ropes; A2. Install lifting limit blocks on the pontoon, and connect each lifting limit block to the corresponding steel dam lifting guide rail to form a sliding pair, so that the pontoon can only move up and down along the length direction of the steel dam lifting guide rail; A3. Inject water into the pontoon through the water injection / drainage system, causing the pontoon to sink to the bottom of the river or waterway along the length direction of the steel dam lifting guide rail, thus completing the dam closure; the steps for opening the dam are the reverse of the dam closure steps. The application of this invention can solve problems such as backflow of water, wind and wave impact, ship navigation safety, and flooding in the surrounding area during flood season and strong winds / typhoons.

The utility model discloses a sleeve pile joint structure for an underground diaphragm wall. The sleeve pile joint structure comprises a secant pile, a first jet grouting pile and a second jet grouting pile, the secant piles are arranged between every two adjacent sections of underground diaphragm walls, one side of each secant pile is connected with the first section of underground diaphragm wall in a secant mode, and the other side of each secant pile is connected with the second section of underground diaphragm wall in a secant mode. The first jet grouting piles are arranged at the joints of the secant piles and the first underground diaphragm wall section, and the second jet grouting piles are arranged at the joints of the secant piles and the second underground diaphragm wall section. Wherein the first jet grouting piles and the second jet grouting piles are located on the soil facing sides of the two adjacent sections of underground diaphragm walls, and the first jet grouting piles and the second jet grouting piles are connected in an engaged mode; the joint is simple in structural design, high in construction efficiency, stable in performance, light in construction disturbance and small in occupied area, and the axial surface environment is powerfully protected.