111results about How to "Prevent influx" patented technology

The invention herein generally refers to an in situ cartilage repair implant. The implant promotes cartilage repair by providing a sealed barrier that prevents the flow of synovial fluid and inflammatory cytokines into a surgically prepared hole that accommodates the implant. Optionally, additives are associated with the implant to promote cartilage repair.

The invention discloses a top breaking gob-side entry retaining method for tender roofs. The top breaking gob-side entry retaining method includes steps of firstly, reinforcing and supporting the tender roofs of roadways jointly supported by original anchor meshes and cables or supported by sheds; secondly, laying wire meshes on gob sides; thirdly, preliminarily breaking the roofs of the roadways on the gob sides; fourthly, piling up preliminarily broken caved gangue until the caved gangue reaches rock of upper-end hard roofs to form gangue piled walls; fifthly, burying perforated grouting pipes in the formed gangue walls, spraying concrete on the surfaces of the wire meshes and the surfaces of the gangue walls to form concrete sprayed supporting layers; sixthly, injecting concrete grout in each preliminarily buried grouting steel pipe by the aid of a grouting pump after the concrete sprayed supporting layers are solidified; seventhly, sequentially detaching falling preventing devices and dense reinforcing columns along with advancing of working faces; eighthly, reinforcing and supporting the roofs under special conditions. The top breaking gob-side entry retaining method has the advantages that active bearing supporting effects can be realized for inherent characteristics of the tender roofs, supporting forms are simple, the cost is low, and entry retaining effects can be efficiently realized.

The invention provides an earth pressure balance type shield long-distance lake-crossing construction technology, which is characterized by comprising the following technological processes that: (1) before the lake crossing, equipment such as a shield tunneling machine cutterhead, a cutter, a grouting system, a sealing system, a thrust jack and a monitoring system are carefully inspected; (2) an earth pressure value is reasonably set, and the volume of excavated earth is strictly controlled; (3) the thrust speed is reduced, and the total thrust is controlled; (4) a shield posture is regulated, and the number of deviation correcting times and the deviation correcting quantity are reduced; (5) the slurry mixing ratio is optimized, and the grouting quantity and the grouting pressure are reasonably set; (6) water leakageat the shield tail is strictly prevented; (7) the construction quality is enhanced, and the tunnel self-waterproof capability is improved; (8) earth body improvement is performed; (9) secondary grouting supplementation is performed; (10) anti-drag slurry is injected; (11) after the shield crosses the lake bottom, the lake bottom in the interval influence range is subjected to radial grouting for reinforcement; and (12) the communication smoothness of the tunnel and the ground is ensured. The excessive lake bottom sedimentation is avoided, and the influence of accidents such as spewing or large-area collapse on the engineering safety and the environment safety is prevented.

The invention discloses a forming device and a method of underground large-diameter horizontal rescue borehole for mine accidents. The device comprises a ring-shaped bit, a central bit and a casing shoe. The ring-shaped bit is provided with a ring-shaped bit shoulder and a spiral locking structure of the ring-shaped bit, the spiral locking structure of the ring-shaped bit is used for rotatably unlocking, the central bit is provided with a central bit shoulder and a spiral locking structure of the central bit, the locking structure of the central bit spiral is used for rotatably unlocking, a chip groove is formed in the side wall of the central drill along an axial direction, one end of the casing shoe is arranged on the ring-shaped drill in a sleeved mode, the other end of the casing shoe is arranged on the central drill in a sleeved mode, the spiral locking structure of the ring-shaped drill is coordinately connected with the spiral locking structure of the central drill. The invention also discloses a hole-forming method for underground large-scale horizontal rescue during mine accident. The hole-drilling and hole-forming device and the hole-forming method for underground large-scale horizontal rescue during mine accident allows the large-diameter rescue borehole to be formed once, has high drilling efficiency and benefits speeding-up of rescue.

The invention discloses a fast strengthening method for ultra-soft earth, comprising the following steps: (1) arranging the separation curtains to divide a plurality of construction areas in the area of waiting for strengthening; pouring water at the field; using the device of artificial inserting plate to insert and arrange the short plastic drainage plate; arranging the horizontal drainage pipeline and then paving a layer of sealing film on the pipeline; forming the strengthening device for shallow layer of ultra-soft earth through the vacuum pumping equipment connected with the pipeline; (2) vacuuming the strengthening device for shallow layer of ultra-soft earth; (3) integrally strengthening the foundation of the device. The fast strengthening method for ultra-soft earth has the advantages that the method can rapidly and effectively solve the problem of strengthening the ultra-soft foundation on the shallow layer, so as to supply the favorable conditions for the construction, such as drainage sand cushion, plastic drainage board or bag sand-well, and supply an advanced art used for strengthening rapidly the foundation on silt or ultra-soft foundation on the filled silt with saving costs greatly.

The invention relates to a construction method for enabling a rectangular pipe jacking machine to enter into a tunnel in an existing building. The construction method is characterized by comprising the following steps: (1) setting up a tunnel-entering receiving buffer platform in the existing building at the tunnel-entering position; (2) setting a hanging point for a cutter head of the pipe jacking machine in the existing building at the tunnel-entering position; (3) chiseling off a portal before the pipe jacking machine enters into the tunnel; (4) adjusting all parameters and enabling the pipe jacking machine to enter into the tunnel; (5) plugging the portal after the rectangular pipe jacking machine enters into the tunnel; (6) detaching the cutter head, a chest plate and internal equipment of the pipe jacking machine, and transporting the cutter, the chest plate and the internal equipment of the pipe jacking machine out of a channel; and (7) leaving a housing of the pipe jacking machine in the channel. The construction method disclosed by the invention has the advantages of smoothly taking an inner core part of the pipe jacking machine out of the existing building and saving investment in construction of a tunnel.

The invention discloses a novel riverway ecological slope protection structure and a slope protection method thereof. The novel riverway ecological slope protection structure includes ecological blocks and anchor nails, and the two ecological blocks adjacent to each other in an up-down or left-right mode are fixedly connected by the anchor nails. The slope protection method includes the steps of riverway slope protection surface cleaning, foundation construction, ecological block machining, ecological block construction, water retaining mechanism removal, and slope protection maintenance. According to the novel riverway ecological slope protection structure, connection strength and stability between the two adjacent ecological blocks adjacent to each other in the up-down or left-right modeare greatly improved through the anchor nails, thus the stability of the entire ecological slope protection structure is improved, the protection effect of the slope protection structure is improvedto prevent water and soil loss on the riverway slope protection surface, the slope protection method is simple in steps and high in practicability, slope protection construction of different riverwayslope protection surfaces can be met, the construction efficiency is high, the construction period is shortened, and the effect of preventing soil and water loss is significant.

The invention discloses a pneumatic type gas and slag separation device and method which comprises a methane dust catcher, a connection flexible pipe, a high pressure pipe, a pneumatic ejector, a dust-removing nozzle, a dust-removing separation bucket, a methane connection pipe and a methane extraction pipe. The methane dust catcher is used for collecting dust in a drilling hole and gushing methane in the drilling construction process. The connection flexible pipe is used for connecting the methane dust catcher and the pneumatic ejector. The high pressure pipe is used for delivering high pressure air into the pneumatic ejector to enable negative pressure to be produced in an ejector suction chamber. The pneumatic ejector is used for increasing pressure difference between an inlet and an outlet of the connection flexible pipe and delivering suctioned gas water and slag mixing fluid to the dust-removing separation bucket, and the dust-removing separation bucket sediments dust through the dust-removing spraying nozzle and separates the gas water and slag mixing liquid into gas, liquid and solid. The pneumatic type gas and slag separation device and method is simple in structure and capable of effectively reducing working face methane and dust density, and simultaneously is high in spraying and dust removing efficiency and less in water usage.

The invention discloses a construction method of a precipitation well, which comprises the following steps of: (1) positioning and sampling; (2) arranging a sleeve pipe; (3) filling water in the sleeve pipe; (4) placing a well pipe; (5) upwards pulling the sleeve pipe; and (6) forming a well, and keeping zero emission (treatment) of sludge. The slurry is not in need to protect a wall when a hole is formed, and the sleeve pipe is directly arranged to the designed bottom elevation; and in the process of forming the hole, the sludge influx can be effectively prevented, the well pipe can be directly placed without cleaning or washing the hole after the hole is formed. The entire procedure does not need the slurry, so that the effect of zero emission of the slurry is achieved. The construction method is fewer in procedure and high in working efficiency. The improved technique reduces the procedures of cleaning the hole, washing the well, and the like, and the whole well forming procedure only spends 1-1.5 hours, so that the working efficiency is largely improved. The procedure is simplified, the required assistant workers are largely reduced, and the labor cost is also decreased.

The invention discloses a mounting method for an underwater pipeline of a water intake channel of a water plant. The mounting method comprises the following steps: laying a protective structure at theouter side of a construction area; manufacturing steel floating boxes from steel plates, and assembling the steel floating boxes to form a water working platform; utilizing a working vertical well toconstruct an underwater subsurface tunnel front hole and a tunnel front hole end head water-stop wall, and reserving a Haff joint; adopting an underwater blasting and / or excavating way to perform trench installation of a tube slot, flattening the tube slot after tube slot is accomplished, and tamping the slot bottom; sealing the two ends of a welded water-take pipeline, floating the water-take pipeline to a tube center position, and sinking the water-take pipeline to a specified position; performing fine turning on the water-take pipeline through a manual hoist mounted underwater via a diver,dismounting a bulkhead, utilizing an underwater auxiliary butt-joint device for enabling the water-take pipeline to be in butt-joint and connection to a tunnel inner pipeline, and performing underwater concrete pouring on a butt-joint position; and performing pipeline back-filling and underwater concrete pouring. The mounting method adopts simple construction equipment, is good in environment-friendly effect, and is quick in construction progress.

The invention discloses a cleaning device for metal surface treatment. The cleaning device comprises a cleaning box, the bottom of the inner wall of the cleaning box is fixedly connected with an air cylinder, and the piston end of the air cylinder is fixedly connected with a supporting plate. According to the cleaning device for the metal surface treatment, cleaning discs are driven to rotate through a transmission mechanism, the cleaning discs rotate to drive second hairbrushes to rotate to perform cleaning on the surfaces of metal parts, meanwhile, cleaning liquid enters a cleaning cover through a three-way connection head to perform the cleaning, after the cleaning is finished, drying wind is conveyed into the cleaning cover to dry the cleaned metal parts after a user starts an air fan, and finally, the cleaning liquid is discharged through a sewage discharge mouth. By means of the cleaning device for the metal surface treatment, the problems that an existing cleaning device cannot perform effective cleaning on metal workpieces of relatively complex structures when treating the metal workpieces of the relatively complex structures and the cleaning liquid cannot be dried rapidly after the cleaning are solved, the cleaning device for the metal surface treatment has the advantages of being thorough in cleaning and convenient and fast in drying, and the cleaning effect and the drying effect are improved.

The invention discloses a support method used in passing a water guide fracture structure in mine exploration, belonging to an underground mining method. The support method comprises the following steps: a working roadway is tunneled along a vertical fault direction, temporary support is carried out once when tunneling forwards for 1-2 m, when the working roadway is dug to be at a distance of 5-10 m from the fault, tunneling is stopped, the working roadway is expanded and brushed, a grouting device roadway with the length of 3 m is expanded and brushed, a grouting device is provided, multiple pipe shed holes are formed from the tail end of the grouting device roadway to the fault, the pipe shed holes are located above the top wall of the working roadway, a pipe shed support is arranged in each pipe shed hole, and a grouting pipe is connected with each pipe shed hole, so that cement mortar flows into underground water of a fracture zone; the working roadway is tunneled, when the working roadway is tunneled to be at a distance of 2 m from the fault surface, tunneling is stopped, and multiple anchor rows are driven to a direction of the water guide fracture structure from a place at a distance of 2 m from the fault surface; at last, multiple drainage holes are formed from the tail end face of the working roadway to the fault direction. According to the invention, when the roadway is dug to pass the fracture structure, collapse cannot happen, a digging process is safe, and larger economic benefit can be obtained.

The invention relates to the technical field of medical devices, and specifically discloses an automatic regulating device for an antibiotic bottle cap. The automatic regulating device comprises a feeding mechanism and a vibrating mechanism, and the feeding mechanism comprises a feeding rack, a hopper, buffer plates, a tapered opening, a vibrating motor, a vibrating disk, a supporting rod, a tactile rod and an inductor; the vibrating mechanism comprises a vibrating component, a tray, a first screw conveyor plate, a second screw conveyor plate, a third screw conveyor plate, a first turning track, a second turning track and a third turning track; the first turning track is composed of a first turning baseplate, a first turning side plate and a first horizontal plate; the first turning trackis connected to a first screw conveyor track, and the second turning track is composed of a second turning baseplate, a second turning side plate and a second horizontal plate; and the third turning track is composed of a third turning baseplate, a third turning side plate and a third horizontal plate. The automatic regulating device has the features that the output quantity can be regulated and the positive and negative regulations are unified.

The invention discloses a counter force device and method used for an oblique static force penetration test inside a tunnel. Two pieces of first box iron are installed on the two sides of the bottom of a static force penetration testing machine frame. Webs at the two ends of the two pieces of first box iron are fixedly connected through steel pipes. Two pieces of second box iron are symmetrically and fixedly erected between the top faces of the two pieces of first box iron in a crossing mode. The two pieces of second box iron are located over the steel pipes. The two pieces of second box iron are each provided with a pressing plate assembly and a counter force supporting adjusting assembly. Each pressing plate assembly comprises angle iron and a pressing plate. Each counter force supporting adjusting assembly comprises a fixing pipe, a threaded rod and two limiting nuts. According to the counter force device, bolts and bolt holes of concrete segments of subway tunnel linings are sufficiently utilized, oblique and horizontal static force penetration tests can be conducted, the safety of the test process is guaranteed, and the defects in the process that an existing counter force device is used for conducting the static force penetration test in the tunnel are overcome.

The invention discloses a method for partial recovery of residual coal from a wide coal pillar; the method is mainly applied to low gas mines or mines meeting ventilation requirement; the method comprises the following steps: (1) from a district gathering roadway, digging a mining preparatory roadway from a coal body on one side of the wide coal pillar and reserving a thin-coal-wall protection roadway; (2) rotating by a certain angle alpha when the mining preparatory roadway keeps a certain distance from the boundary of a mining area, and digging a mining roadway; (3) after digging to a coal pillar at the boundary of the mining area, arranging an inclined short-wall working surface in a manner of being parallel to the coal pillar at the boundary of the mining area; (4) mining along the direction of the mining roadway, and reserving a security coal pillar when keeping a certain distance with the mining roadway; (5) after the first short-wall working surface is mined out, recovering partial triangle coals along the end of the mining preparatory roadway by virtue of a fully-mechanized excavating machine; and (6) repeating steps (2)-(5) by spacing a security coal pillar along the mining preparatory roadway to arrange short-wall working surfaces in a parallel manner, so as to gradually recover the residual coal from the wide coal pillar sequentially.

The invention relates to the technical field of pipe jacking construction, and aims to provide a mechanical pipe jacking construction process. The process comprises the following steps of lofting andrechecking; well construction; pipe jacking equipment and ground auxiliary facilities are installed; discharging the pipe jacking equipment out of the working well; a jacking axis is preset on the console, the position relation between a machine head of the pipe jacking equipment and the jacking axis is displayed in a laser point mode, and meanwhile a three-dimensional simulation model used for simulating the pipe jacking construction process is arranged in the application background; the application background obtains construction process data of the console in real time and inputs the construction process data into the three-dimensional simulation model, and the three-dimensional simulation model controls the application background to give an alarm; an operator adjusts the position of amachine head of the deviation correcting pipe jacking equipment until the position deviation between the laser point and the jacking axis is smaller than or equal to a preset value; pipe jacking equipment enters a receiving well; and jacking-in and soil-out device. The process has the effects of assisting an operator in finding the running direction of the machine head and adjusting the running direction of the machine head in time, so that the situation that the construction quality is influenced by personal errors during construction is reduced.

The invention relates to a short-distance coal seam group fire treatment method. The method comprises the following steps that: a colloidal isolation zone is established in a 2<-2> coal goaf between acoal mine boundary and an open-air stripping area; with the radon measure technique for fire exploration, a possible high temperature abnormal area in the 2<-2> coal goaf in a coal well field is detected; inert gas is injected into a borehole formed in the top 2<-2> coal goaf through a coal mine 3<-1> coal roadway; closed wall management is carried out on a working face of the exploited area of the 3<-1> coal roadway; CO gas is observed through the borehole formed in the top 2<-2> coal goaf through the 3<-1> coal roadway; and emergency preparation for preventing the sudden influx of CO intothe production working face is established. According to the short-distance coal seam group fire treatment method provided by the invention, on the basis of the analysis of the overall management thought of external isolation, internal extinction, and pressure equalization prevention and control for the 2<-2> coal goaf, occurrence of major malignant accidents such as mine fires and gas explosionscan be controlled and reduced.

The invention relates to the technical field of medical devices and particularly discloses an antibiotic bottle cover automatic loading mechanism which comprises a loading rack (101) and a hopper (102) arranged at the upper part of the loading rack; the hopper is internally provided with a plurality of buffer plates (103) which are inclined downward in an intersecting manner; the upper end of thebuffer plates are arranged on the inner wall of the hopper; an interval is reserved between the lower end of each buffer plate and the inner wall of the hopper; the lower ends of the buffer plates onthe upper side point to the rest of the buffer plates on the lower side; a conical material hole (104) is formed in the bottom of the hopper; the loading rack is provided with a vibration motor (105);the vibration end of the vibration motor is provided with a vibration disc (106) inclined downward; the vibration disc is arranged below the conical material hole; the bottom surface in the vibrationdisc is of a wave structure in smooth transition; the loading bracket is provided with a supporting rod (107); a touch rod (108) is rotationally arranged at the end part of the supporting rod; and the supporting rod is provided with an inductor (109) corresponding to the touch rod. The antibiotic bottle cover automatic loading mechanism has the characteristics of capability of regulating output quantity and better conveying effect.

The invention relates to the technical field of medical instruments, and particularly discloses an automatic antibiotic bottle cap detection device, comprising a feeding mechanism, a vibration mechanism, a first conveying mechanism, a first detecting mechanism, a second detecting mechanism, a turning mechanism, a second conveying mechanism and a third detecting mechanism, wherein the feeding mechanism comprises a buffer plate, a vibration motor, a vibration plate, a contact rod and an inductor; the vibration mechanism comprises a first spiral conveying plate, a second spiral conveying plate, athird spiral conveying plate, a first steering track, a second steering track and a third steering track; the first detecting mechanism comprises a first light source and a first camera; the second detecting mechanism comprises a square fixed frame, a second light source, a fixed rod and a second camera; and the third detecting mechanism comprises a three camera and a third light source; the turning mechanism comprises a semi-closed sleeve, a torsion bar and a U-shaped buckle. The automatic antibiotic bottle cap detection device has the characteristics that the output can be adjusted, the positive and negative adjustments are unified, the transportation is not disturbed, the equipment cost is low, and the detection efficiency is high.

The invention relates to a tail beam for a hydraulic bracket of a coal mine underground working face top slab shoring, which comprises a tail beam (3) with one end hinged on the tail of a bracket top beam (1) only by a hinged point (2) and the other end contacted with a soleplate by two lug bosses (13, 14), a top-coal caving strobe (6) which can slide along the tail beam (3), an oil cylinder (5) for driving the on-off of the strobe (6) and a direction-regulating oil cylinder (9). As the tail beam is only supported by three points of the hinged point (2), the lug boss (13) and the lug boss (14), the tail beam is stably supported and free from torsion, the weight is reduced. A recess between the lug bosses (13, 14) is convenient to discharge gangue and in particular suitable for being used in uneven soleplates and working faces with more dunn bass in coal wall.

The invention discloses a construction method of a precipitation well, which comprises the following steps of: (1) positioning and sampling; (2) arranging a sleeve pipe; (3) filling water in the sleeve pipe; (4) placing a well pipe; (5) upwards pulling the sleeve pipe; and (6) forming a well, and keeping zero emission (treatment) of sludge. The slurry is not in need to protect a wall when a hole is formed, and the sleeve pipe is directly arranged to the designed bottom elevation; and in the process of forming the hole, the sludge influx can be effectively prevented, the well pipe can be directly placed without cleaning or washing the hole after the hole is formed. The entire procedure does not need the slurry, so that the effect of zero emission of the slurry is achieved. The construction method is fewer in procedure and high in working efficiency. The improved technique reduces the procedures of cleaning the hole, washing the well, and the like, and the whole well forming procedure only spends 1-1.5 hours, so that the working efficiency is largely improved. The procedure is simplified, the required assistant workers are largely reduced, and the labor cost is also decreased.

The invention discloses a supporting and protecting device for gob-side entry retaining of an ultra-high roadway. The ultra-high roadway includes a roadway and a front undercutting roadway, negative coal wall spalling is arranged on one sides of the roadway and the front undercutting roadway, and a mined-out area, a working surface and positive coal wall spalling are sequentially arranged on the other sides of the roadway and the front undercutting roadway. Steel pipe concrete pillars and stacking brackets for supporting and protecting are arranged at intervals in the roadway. Transverse strutsteel columns for resisting roadway lateral pressure are arranged on the steel pipe concrete pillars at the mined-out area in the roadway. A roadway top plate is provided with reinforced anchor cables for advance pre-reinforcement. The device has the advantages of reliable support and protection, simple operation, cost saving, improvement of coal recovery rate and improvement of the economic benefit of coal mine, and the application of the ultra-high gob-side entry retaining can reduce the excavation amount of the roadway and alleviate the continuous tension in the mine.

The invention relates to a wind inlet system used for housing construction and an installation method thereof and belongs to the field of building ventilation. According to the technical key points of the wind inlet system, the wind inlet system comprises a vertically-formed wind inlet pipeline, a total wind inlet is formed in the top of the wind inlet pipeline, and branch wind inlets are formed in a pipe body of the wind inlet pipeline and internally provided with wind gap check valves. According to the technical key points of the installation method, the installation method comprises the steps that the wind inlet pipeline vertically penetrates through the whole building floors, embedded parts are arranged on floor slabs of all the floors, and steel angles are welded to the surface of the wind inlet pipeline; through welding of the steel angles and the embedded parts, the floor slabs of all the floors are connected with the wind inlet pipeline, and each branch wind inlet is formed in the position, located inside the corresponding floor, of the wind inlet pipeline; and the total wind inlet is formed in the roof of a building. According to the wind inlet system used for housing construction and the installation method thereof, under the premises that normal working of exhaust equipment is ensured, and the in-housing odor returning phenomenon does not occur, fresh air can be supplemented into a housing in time to ensure air quality inside the housing.

The invention discloses a long-life bearing block, which comprises a bearing block body and a bearing cap arranged on the bearing block body, wherein a bearing hole is formed in each of the bearing block body and the bearing cap; shaft holes are formed in the two sides of the bearing hole, and the diameters of the shaft holes are smaller than that of the bearing hole; sealing grooves are formed at the shaft holes; a cylindrical cavity is formed between the bearing hole and one shaft hole, and the external diameter of the cylindrical cavity is smaller than the aperture of the bearing hole; an oil storage cavity is formed in the bearing block body and the bearing cap, and is positioned between the bearing hole and one shaft hole; scrap accumulation holes communicated with the oil storage cavity are also formed in the lower part of the oil storage cavity; the oil storage cavity and the scrap accumulation holes are used for storing a lubricant, so that a large amount of lubricant can be stored in an oil cavity, tiny metal particles and other substances can be precipitated, and the service life of the bearing block is prolonged. In addition, the invention also discloses mineral engineering machinery comprising the long-life bearing block.

The invention discloses a scenic spot passenger flow multi-dimensional supervision system and method. The system comprises a first acquisition unit, a second acquisition unit, an analysis unit and a flow guide unit, the first acquisition unit is used for acquiring video or image information of a non-scenic spot area, the analysis unit obtains first passenger flow volume information based on the video or image information, predicts second passenger flow volume information, and sends the second passenger flow volume information to the flow guide unit; the second passenger flow volume is sent toa second acquisition unit, the second acquisition unit acquires the passenger flow volume entering and exiting the corresponding scenic spot to obtain a third passenger flow volume, calculates the sumof the second passenger flow volume and the third passenger flow volume, and compares the sum of the second passenger flow volume and the third passenger flow volume with a preset value; and judges whether to control the flow guide unit to enter a flow guide mode or a passage mode according to a comparison result. The tourists are prevented from gathering at the scenic spot gate to cause congestion, the tourists can visit in other scenic spots or non-scenic-spot areas without standing in situ to queue and wait, the tourists return after the number of the tourists in the scenic spot areas is reduced, the visiting time is arranged more reasonably, and the user experience is improved.

The invention discloses a basement shear wall post-pouring belt precast external mold construction method. The basement shear wall post-pouring belt precast external mold construction method includesthe steps that S1, after a basement shear wall is subjected to mold removal, virtual edge laitance at the position of a shear wall post-pouring belt is gouged and cleaned up, then a concrete precast mold plate is installed, a reserved water stopping screw is connected with a shear wall post-pouring belt reinforcement in a welded mode, gaps and internal corners between a precast block and the shearwall are sealed, a waterproof additional layer coiled material is pasted to the outer side of the precast block, and a protective mortar layer is arranged on the outer side of the waterproof additional layer coiled material; S2, the precast block is prefabricated; S3, installation control lines are formed through a chalk line at the two concrete adjacent sides of the shear wall post-pouring belt,and the precast block is installed according to the positions of the control lines when being lifted; S4, the precast block is lifted; S5, fixing is carried out, specifically, cement mortar bedding is performed on the lower part of the precast block, the precast block is lifted, and the pre-embedded water stopping screw and the shear wall reinforcements are welded and fixed; S6, the waterproof coiled material construction is carried out; and S7, masonry is protected. The basement shear wall post-pouring belt precast external mold construction method is widely applied to construction of the basement shear wall post-pouring belt for buildings with foundation pits.

The invention discloses a convenient-to-overhaul tail water cooler device. The device comprises a group of gate hanging holes, an upper platform is arranged on the chest wall top surface on the gate hanging hole unit side, and a tail water cooler is arranged on the upper platform; a water retaining chest wall is arranged above the upper platform, a rectangular down hole is formed between the waterretaining chest wall and the upper platform, and a tail water cooler overhauling gate is arranged at the rectangle down hole; an H-shaped water seal supporting assembly is arranged on the gate hanging hole gate groove side; and the surface of a panel of the tail water cooler overhauling gate is provided with a rectangular water seal assembly with the periphery water stop function; and the rectangular water seal assembly is in water stop connection with the H-shaped water seal supporting assembly. According to the convenient-to-overhaul tail water cooler device, when the tail water cooler needs to be overhauled, underwater operation of a diver is not required, and the tail water cooler does not need to be lifted out of the platform during overhauling, so that overhauling and maintenance are very convenient, the overhauling efficiency is greatly improved, and the personal safety of overhaul personnel is greatly guaranteed.

The invention provides a flooding-proof and waterlogging-draining system for an underground garage. The flooding-proof and waterlogging-draining system comprises a flooding-proof door assembly, the flooding-proof door assembly comprises a door frame and a rubber soft brake, and the rubber soft brake can be lowered in the door frame so as to close an entrance of the underground garage; clamping grooves are formed in the opposite side faces of a door frame vertical column, the edges of the two sides of the rubber soft brake are matched with the clamping grooves in a clamped mode, and an expandable capsule is arranged on the rubber soft brake, can be expanded when inflated, and forms an air-tight connection structure together with the clamping grooves of the door frame vertical column; at a water measuring pit in the front of the entrance of the underground garage, a balancing water pipe is led out from the bottom of the water measuring pit, a water measuring pipe is connected with the balancing water pipe, vertically arranged and located above the ground surface, and a first water level sensor is arranged in the water measuring pipe; and a controller serves as the control center of the flooding-proof and waterlogging-draining system to achieve automatic starting of the system. The flooding-proof and waterlogging-draining system is mounted at the entrance of the garage, can be quickly started when urban waterlogging occurs to close the entrance of the garage, and achieves the flooding-proof effect on the underground garage.