CN113279429B - Underground diversion operation plugging structure and plugging method - Google Patents
Underground diversion operation plugging structure and plugging method Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0401—Gullies for use in roads or pavements
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Abstract
The invention discloses a plugging structure and a plugging method for underground diversion operation, wherein the plugging method comprises the following steps: s1, preparing construction; s2, measuring and paying off; s3, removing surface trees and shrubs; s4, dismantling a sewage well shaft; s5, ventilation in the sewage well; s6, plugging an upstream sewage pipeline and a downstream sewage pipeline of the well by using an underwater air bag; s7, excavating a diversion trench at the bottom of the sewage well; s8, installing a diversion pipeline; s9, exhausting the air bag; s10, a bottom plate is arranged at the bottom of the sewage well in a cushioning mode; s11, breaking a tunnel portal at a receiving end of the jacking pipe; s12, receiving a miniature jacking pipe; s13, plugging a tunnel portal; s14, dismantling the diversion pipeline and the air bag; s15, recovering the sewage well cover plate and the shaft; the invention uses the existing sewage well as the miniature pipe jacking sewage well, does not need to specially beat a well to receive the miniature pipe jacking, can greatly reduce the construction quantity and shorten the construction period.
Description
Technical Field
The invention belongs to the technical field of pipe jacking construction, and particularly relates to a plugging structure and a plugging method for underground diversion operation.
Background
The pipe jacking construction is a non-excavation tunneling pipeline laying construction technology, is mainly used for the condition of laying a pipeline through an obstacle, excavates a pipe jacking working well downwards from one side of the obstacle, uses a mechanical or manual mode to jack the pipe jacking or miniature pipe jacking in the working well, and jacks the pipe jacking or miniature pipe jacking from the working well to the working well at the other side of the obstacle, thereby avoiding the obstacle to finish the laying of the pipeline, reducing a large amount of excavation work, and solving the problems of damage to urban buildings, blockage of road traffic and the like in the process of burying the pipeline in facilities.
In the construction of miniature pipe jacking, a well needs to be excavated as a miniature pipe jacking receiving well, and the existing well can be frequently utilized as the receiving well in the actual construction, so that the workload is reduced, and if the sewage well in use is used as the miniature pipe jacking receiving well, the sewage in the existing sewage well needs to be guided.
The Chinese patent application No. CN201610700579.1 discloses a diversion method for adding a pipeline by adopting a jacking pipe in the existing inspection well, which comprises the following construction steps: a. determining a diversion mode, namely determining to adopt an existing annular diversion trench mode around the inspection well according to the working condition of the inspection well, and adopting a pipe jacking technology to add a drainage pipe during construction, wherein water flow in the original inspection well is drained through the annular diversion trench, so that dry construction conditions are formed in the inspection well; 2. calculating and determining the width of the annular diversion trench, 3, determining the elevation of the bottom plate of the annular diversion trench, wherein the bottom of the annular diversion trench adopts a concrete pouring bottom plate, the thickness of the bottom plate is 0.2m, and the elevation of the top surface of the bottom plate is consistent with the elevation of the bottom of the existing drainage pipeline.
This diversion scheme is complex to construct.
Disclosure of Invention
The invention aims to provide an underground diversion operation plugging structure and a plugging method, which solve the problem that the underground diversion method is complex in construction in the existing pipe jacking construction.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a plugging method for underground diversion operation comprises the following steps:
s1, preparation of construction: the organization is carefully familiar with drawings before construction, and carries out technical mating, organizes the approach of personnel, mechanical equipment, materials and the like in advance, sets an isolation net at the wellhead of the sewage well, and posts warning boards;
s2, measuring and paying-off: measuring and lofting on site by adopting a total station;
s3, removing surface trees and shrubs: manually removing surface trees and shrubs by matching with machinery;
s4, dismantling a sewage well shaft: the old sewage well shaft is removed by adopting manual cooperation with an air pick, and the removed construction slag is transported to a waste slag field for stacking;
s5, ventilation in the sewage well: immediately ventilating the shaft after the shaft is dismantled, adopting an axial flow fan to ventilate and ventilate the shaft, ensuring the discharge of harmful gas, detecting by using a harmful gas detector after ventilation and ventilation, and carrying out the next step after passing;
s6, plugging an up-and-down sewage pipeline by an underwater air bag: adopting an air bag with the same pipe diameter as the sewage pipe to block the upstream sewage pipe and the downstream sewage pipe, and pumping the sewage in the sewage well after the blocking is completed;
s7, excavating a diversion trench at the bottom of the sewage well, and building bricks on the bottom and the side wall of the diversion trench for protection after the excavation is completed;
s8, installing a diversion pipeline, wherein two ends of the diversion pipeline are respectively communicated with the sewage pipelines at the upstream and downstream of the sewage well, the diversion pipeline is installed in a diversion trench, and after the diversion pipeline is installed, the diversion trench is filled with stone slag, and the diversion pipeline is fixed;
s9, exhausting the air bag;
s10, a bottom plate is arranged at the bottom of the sewage well in a cushioning mode, the bottom plate covers the diversion trench, and the bottom plate can be made of steel plates;
s11, breaking a tunnel portal at a receiving end of the jacking pipe: adopting an air pick to break a tunnel portal at a pipe jacking receiving end, transporting building slag out through a hanging basket, discarding the building slag to a waste slag field for stacking, utilizing a sand bag cofferdam at the tunnel portal before breaking the tunnel portal, arranging a water pump in the weir, closely paying attention to whether water and sand are gushed, timely pumping and draining the water, and filling a cushion block at the bottom of the water pump to prevent the sand from blocking the water pump;
s12, receiving a miniature jacking pipe: after the tunnel portal is broken, preparing a miniature jacking pipe for receiving;
s13, blocking a tunnel portal: after the miniature jacking pipe is received, plugging a tunnel portal according to the design requirement;
s14, removing the diversion pipeline and the air bag, filling the diversion trench, and recovering the bottom of the sewage well;
s15, restoring the sewage well cover plate and the shaft: recovering the well cover and the well shaft according to the original sewage well structure;
further, the surface vegetation is restored.
Furthermore, the inner wall of the sewage well is provided with a rice-shaped support to strengthen the well wall.
Further, after the receiving hole of the sewage well is broken, a steel protection barrel is arranged at the hole, a water stop wall is poured on the periphery of the steel protection barrel by adopting concrete water glass mixed solution, wherein the concrete is water glass=1:1, a PC type rubber water stop plate is arranged between the steel protection barrel and the water stop wall, and the PC type rubber water stop plate is tightly attached to the steel protection barrel to strengthen and waterproof the hole.
The underground diversion operation plugging structure comprises the air bag and the diversion pipeline, wherein the air bag is positioned in the sewage pipeline and is used for plugging the sewage pipeline, and the air bag comprises an air pipe for inflating and deflating; the two ends of the diversion pipeline are respectively provided with a transition joint, the two transition joints are respectively communicated with an upstream sewage pipeline and a downstream sewage pipeline, and the upstream sewage pipeline and the downstream sewage pipeline are communicated through the diversion pipeline, so that the problem that the construction in a well is influenced due to sewage leakage caused by overlarge bearing pressure of an air bag due to long-time plugging is avoided; the air pipe penetrates through the exhaust hole, so that the air bag can be deflated after the diversion pipeline is installed, the blocking of the air bag on the sewage pipeline is relieved, and the installation construction of the diversion pipeline is facilitated; the air bag is connected with the transition joint through a rope, so that the air bag is prevented from being flushed away by sewage.
Further, the diversion pipeline is a U-shaped plastic pipeline, the radial section of the diversion pipeline is a runway, the diversion capacity is larger, the occupied space in the sewage well is smaller, and the construction in the sewage well is facilitated.
Further, the trachea is the hose, and the periphery is equipped with the rubber layer, the trachea with interference fit between the exhaust hole, the trachea that passes the exhaust hole can block up the exhaust hole, avoids sewage to reveal from the exhaust hole.
Compared with the prior art, the invention has the beneficial effects that:
(1) The existing sewage well is used as the miniature pipe jacking sewage well, and a special well is not required to be drilled for receiving the miniature pipe jacking, so that the construction quantity can be greatly reduced, and the construction period can be shortened.
(2) The sewage is guided by the guide pipeline, so that the guide capacity is large, the effect is good, the construction is simple, the installation is easy, and the sewage is not easy to leak.
(3) The radial section of the sewage pipeline is set to be the runway type flat pipeline, so that occupied space is reduced, more space is provided for construction in the sewage well, and the excavated diversion trench can be shallower, so that construction quantity can be effectively reduced.
(4) By arranging the exhaust hole on the transition joint, the air bag can be exhausted after the diversion pipeline is installed, the blocking of the air bag to the sewage well is relieved, and the installation construction of the diversion pipeline is facilitated.
Drawings
FIG. 1 is a flow chart of a plugging method for underground diversion operation in the invention;
FIG. 2 is a schematic diagram of a sand bag cofferdam structure in the present invention;
FIG. 3 is a schematic view of a diversion pipeline structure in the present invention;
FIG. 4 is a side view of a conduit according to the present invention;
in the figure: 1. a bilge well; 2. a sewage conduit; 3. jacking pipes; 4. a sand bag; 5. a water pump; 6. a diversion pipeline; 7. a bottom plate; 8. a transition joint; 9. an air bag; 10. and an air pipe.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1-4, the embodiment discloses a plugging method for underground diversion operation, which comprises the following steps:
s1, preparation of construction: the organization is carefully familiar with drawings before construction, and carries out technical mating, organizes the approach of personnel, mechanical equipment, materials and the like in advance, sets an isolation net at the wellhead of the sewage well 1, and posts warning boards;
s2, measuring and paying-off: measuring and lofting on site by adopting a total station;
s3, removing surface trees and shrubs: manually removing surface trees and shrubs by matching with machinery;
s4, dismantling a 1 shaft of the sewage well: the old sewage well 1 shaft is removed by adopting manual cooperation with an air pick, and the removed construction slag is transported to a waste slag field for stacking;
s5, ventilation and ventilation in the sewage well 1: immediately ventilating the shaft after the shaft is dismantled, adopting an axial flow fan to ventilate and ventilate the shaft, ensuring the discharge of harmful gas, detecting by using a harmful gas detector after ventilation and ventilation, and carrying out the next step after passing;
s6, plugging the sewage pipeline 2 on the upper and the lower stream by the underwater air bag 9: an air bag 9 with the same pipe diameter as the sewage pipe 2 is adopted to block the upstream sewage pipe 2 and the downstream sewage pipe 2, and after the blocking is finished, sewage in the sewage well 1 is pumped away, so that the dry construction in the sewage well 1 is ensured;
s7, excavating a diversion trench at the bottom of the sewage well 1, and building bricks on the bottom and the side wall of the diversion trench for protection after the excavation is completed;
s8, installing a diversion pipeline 6, wherein two ends of the diversion pipeline 6 are respectively communicated with the sewage pipeline 2 at the upstream and downstream of the sewage well 1, the diversion pipeline 6 is installed in a diversion trench, and after the diversion pipeline 6 is installed, the diversion trench is filled with stone slag, and the diversion pipeline 6 is fixed;
s9, discharging gas in the air bag 9, and releasing the blocking of the air bag 9 on the sewage pipeline 2, so that sewage is discharged from the upstream to the downstream of the sewage pipeline 2 through the diversion pipeline 6;
s10, a bottom plate 7 is arranged at the bottom of the sewage well 1 in a cushioning mode, the bottom plate 7 covers the diversion trench, and the bottom plate 7 can be made of steel plates;
s11, breaking a portal at the receiving end of the jacking pipe 3: the pneumatic pick is adopted to break a tunnel portal at the receiving end of the jacking pipe 3, building slag is transported out through a hanging basket and is abandoned to a waste slag field for stacking, before the tunnel portal is broken, a sand bag 4 is utilized to cofferdam at the tunnel portal, a water pump 5 is arranged in the weir, whether water and sand are gushed or not is closely concerned, water gushing is pumped and discharged in time, and a cushion block is filled at the bottom of the water pump 5 to prevent the sand from blocking the water pump 5;
s12, receiving the miniature jacking pipe 3: after the tunnel portal is broken, preparing the miniature jacking pipe 3 for receiving;
s13, blocking a tunnel portal: after the miniature jacking pipe 3 is received, plugging a tunnel portal according to the design requirement;
s14, removing the diversion pipeline 6 and the air bag 9, filling the diversion trench, and recovering the bottom of the sewage well 1;
s15, restoring the cover plate and the shaft of the sewage well 1: recovering the well cover and the well shaft according to the original structure of the old sewage well 1;
further, the surface vegetation is restored.
Further, before underground operation, 2-3 adjacent current inspection wells of an operation well (namely a sewage well 1) are used for air supply, and the air supply time before operation is not less than 1h; before and during the operation of the limited space, the operators must be equipped with ventilation equipment, detection equipment, lighting equipment, communication equipment, emergency rescue equipment and personal labor protection articles which meet the national standard requirements, and forced continuous ventilation measures can be adopted to reduce harm, keep air circulation and strictly forbid pure oxygen for ventilation. When flammable gas and explosive dust exist in a limited space, detection, illumination and communication equipment meet the explosion-proof requirements, and operators use explosion-proof tools and are provided with flammable gas alarms; enters limited space operation and continuously blows air into the bilge well 1 during the operation. The supervision must be enhanced to prevent private access to the pipeline before detection.
Further, when the limited space operation is performed, environment detection analysis is performed every 30 minutes, if one of the environment detection analysis is failed and other conditions are abnormal, the operation is immediately stopped, and the operator is evacuated; and after the field is processed and detected to meet the requirements, continuing to operate.
Further, the construction area is isolated from each intersection and adjacent plots by adopting a totally-enclosed enclosing barrier, and pedestrian passages are reserved on two sides so as to facilitate surrounding residents to come in and go out, and the height of the enclosing barrier is not less than 2.5m. The fence footing adopts an MU10 shale brick foundation, the fence baffle adopts two modularized double-layer thickened color steel plates, the foundation at the bottom of the outer part of the fence is provided with warning marks of yellow and black at intervals, and the top of the fence is provided with obvious warning marks such as red lights, reflective tapes and the like; and setting construction warning boards at positions 100m and 50m away from the direction of an incoming vehicle outside a construction area during construction, and guiding the vehicle to select other routes.
Further, in step 2, a plane control network is established for encrypting each advanced wire guide point so as to meet the requirement of plane control of construction measurement; and establishing a measurement elevation control network.
Further, in order to prevent the excessive mud water pressure from rushing into the sewage well 1 in the process of exiting the hole of the jacking pipe 3 and jacking, the inner wall of the sewage well 1 is properly reinforced, and a rice-shaped support is arranged.
Further, the push bench 3 receives a part of the head, which is generally advanced into the sewage well 1, and then is fully advanced into the sewage well 1 as the push bench is continuously pushed. As the machine head continuously enters the sewage well 1, as the weight of the machine head continuously inclines towards the outer leakage section of the machine head, the bending moment and the shearing force of the machine head at the opening become larger and larger, and in order to ensure that the pipe jacking machine 3 and the embedded sleeve at the opening are not damaged, a receiving guide rail is required to be arranged in the sewage well 1 before the pipe jacking machine 3 receives the pipe jacking machine, so that the machine head is ensured to receive the pipe jacking machine along the horizontal direction.
Further, after the receiving hole of the sewage well 1 is broken, a steel pile casing is arranged at the hole, 100cm of the periphery of the steel pile casing is filled into the hole, a water stop wall is formed by grouting P.O42.5 concrete and water glass mixed solution, the concrete is water glass=1:1, a PC type rubber water stop plate is arranged between the steel pile casing and the water stop wall, the PC type rubber water stop plate is tightly attached to the steel pile casing, and the bottom of the receiving well (namely the sewage well 1) is prevented from water inflow by adopting a concrete mixing pile and a concrete sealing bottom.
Further, after the bottom plate 7 is paved, the interior of the sewage well 1 is cleaned, the wall of the well is manually washed by using a high-pressure water gun, sludge in the sewage well 1 is sucked and pumped by using a sludge tank truck, and the dry construction in the interior of the sewage well 1 is ensured.
Furthermore, the distribution box and the well lid without the cover are provided with isolation nets and warning boards are posted.
Further, the construction area is required to form a closed enclosure according to urban construction departments, and the edge protection is required to be complete, and the construction area is cleaned and cleaned by sprinkling water regularly.
Further, in order to prevent the cable joint from loosening and the sewage well 1 from being internally provided with a part of movable joint boxes when electricity is used, the joint quality is ensured, and the electric leakage accident caused by the binding and wetting of the joint can be avoided.
Furthermore, during construction, an emergency power supply is further provided, the emergency power supply adopts a ground standby generator, and power is timely supplied when power is off in the sewage well 1 so as to ensure normal operation of illumination, ventilation and construction.
Further, the change dynamics of the underground water level is mastered and collected, the influence degree of construction precipitation on surrounding stratum is observed and judged, the loss of underground water resources and construction pollution are prevented, and the ecological environment is protected.
Further, an early warning mechanism is established, and construction cost increase caused by structural and environmental safety accidents is avoided.
Further, the influence degree of engineering construction on the underground pipeline is known through monitoring, and the underground pipeline is ensured to be in a safe working state, wherein the underground pipeline comprises cables, optical fibers, urban water supply pipes, natural gas pipelines and the like.
Further, monitoring the item includes: surface subsidence, peripheral building displacement, underground pipeline subsidence, ground water level, ground cracks, and the like.
The embodiment also discloses a plugging structure for underground diversion operation, which comprises the air bag 9 and the diversion pipeline 6, wherein the air bag 9 is positioned in the sewage pipeline 2 and is used for plugging the sewage pipeline 2, and the air bag 9 comprises an air pipe 10 for inflating and deflating; the two ends of the diversion pipeline 6 are respectively provided with a transition joint 8, the two transition joints 8 are respectively communicated with the upstream sewage pipeline 2 and the downstream sewage pipeline 2, and the upstream sewage pipeline 2 and the downstream sewage pipeline 2 are communicated through the diversion pipeline 6, so that long-time plugging is avoided, and the air bags 9 bear excessive pressure, so that sewage leakage affects the construction in the well; the air pipe 10 penetrates through the air hole and extends to the outside of the transition joint 8, the air bag 9 can be deflated after the diversion pipeline 6 is installed, the blocking of the air bag 9 to the sewage pipeline 2 is relieved, and the installation construction of the diversion pipeline 6 is facilitated; the air bag 9 is connected with the transition joint 8 through a rope, so that the air bag 9 is prevented from being washed away by sewage.
Further, the diversion pipeline 6 is a U-shaped plastic pipeline, the radial section of the diversion pipeline 6 is a runway, the diversion capacity is larger, the occupied space in the sewage well 1 is smaller, and the construction in the sewage well 1 is facilitated.
Further, the air pipe 10 is a hose, a rubber layer is arranged on the periphery of the air pipe 10, the air pipe 10 is in interference fit with the exhaust holes, the air pipe 10 penetrating through the exhaust holes can plug the exhaust holes, and sewage is prevented from leaking from the exhaust holes.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The underground diversion operation plugging method is characterized by utilizing an air bag and a diversion pipeline, wherein the air bag is positioned in a sewage pipeline and is used for plugging the sewage pipeline, and the air bag comprises an air pipe for inflating and deflating; transition joints are arranged at two ends of the diversion pipeline, the two transition joints are respectively communicated with the upstream sewage pipeline and the downstream sewage pipeline, an exhaust hole is arranged at one end of the transition joint, which is communicated with the diversion pipeline, of the transition joint, and the air pipe penetrates through the exhaust hole; the air bag is connected with the transition joint through a rope, and specifically comprises the following steps:
s1, preparation of construction: the organization is carefully familiar with drawings before construction, and carries out technical mating, personnel, mechanical equipment and material approach are organized in advance, an isolation net is arranged at the wellhead of a sewage well, and warning signs are posted;
s2, measuring and paying-off: measuring and lofting on site by adopting a total station;
s3, removing surface trees and shrubs: manually removing surface trees and shrubs by matching with machinery;
s4, dismantling a sewage well shaft: the old bilge well shaft is dismantled by adopting manual cooperation with an air pick;
s5, ventilation in the sewage well: immediately ventilating the well after the shaft is dismantled, ventilating and ventilating the well by adopting a fan to ensure that harmful gas is discharged, detecting by using a harmful gas detector after ventilation and ventilation, and performing the next step after passing;
s6, plugging an up-and-down sewage pipeline by an underwater air bag: adopting an air bag with the same pipe diameter as the sewage pipe to block the upstream sewage pipe and the downstream sewage pipe, and pumping the sewage in the sewage well after the blocking is completed;
s7, excavating a diversion trench at the bottom of the sewage well;
s8, installing a diversion pipeline, wherein the diversion pipeline is of a U-shaped structure, two ends of the diversion pipeline are respectively communicated with the sewage pipelines at the upstream and downstream of the sewage well, the diversion pipeline is installed in a diversion trench, and after the diversion pipeline is installed, the diversion trench is filled with stone slag, and the diversion pipeline is fixed;
s9, exhausting the air bag and recovering the sewage flow;
s10, a bottom plate is arranged at the bottom of the sewage well in a cushioning mode, and the bottom plate covers the diversion trench;
s11, breaking a tunnel portal at a receiving end of the jacking pipe: adopting an air pick to break a tunnel portal at a pipe jacking receiving end, utilizing a sand bag cofferdam at the tunnel portal before breaking the tunnel portal, arranging a water pump in the weir, closely paying attention to whether water and sand are gushed or not, and timely pumping and draining the gushed water;
s12, receiving a miniature jacking pipe: after the tunnel portal is broken, preparing a miniature jacking pipe for receiving;
s13, blocking a tunnel portal: after the miniature jacking pipe is received, plugging a tunnel portal according to the design requirement;
s14, removing the diversion pipeline and the air bag, filling the diversion trench, and recovering the bottom of the sewage well;
s15, recovering the bilge well cover plate and the shaft.
2. The method for plugging a well diversion operation according to claim 1, wherein in step S5, after ventilation and ventilation, the method uses a harmful gas detector to detect, and after passing, the method proceeds to the next step.
3. The method for plugging a well diversion operation according to claim 1, wherein in step S6, after the underwater air bag plugs the sewage pipes above and below the sewage well, the sewage in the sewage well is pumped away.
4. The method for plugging underground diversion operation according to claim 1, wherein in step S8, before the opening of the opening is broken, a sand bag cofferdam is used at the opening of the opening, a water pump is arranged in the weir, and a cushion block is filled at the bottom of the water pump.
5. The method of plugging a well diversion operation of claim 1, wherein an isolation net is arranged at the well head of the sewage well, and a warning sign is posted.
6. The method of plugging a well diversion operation of claim 1, wherein a chevron-shaped support is provided on an inner wall of the bilge well.
7. The method for plugging underground diversion operation according to claim 1, wherein after the sewage well receiving hole is broken, a steel casing is arranged at the hole, a water stop wall is poured by adopting concrete water glass mixed solution at the periphery of the steel casing, water glass=1:1 is used for coagulation, a PC-type rubber water stop plate is arranged between the steel casing and the water stop wall, and the PC-type rubber water stop plate is tightly attached to the steel casing.
8. The method of plugging a well by diversion work of claim 1, wherein the diversion pipe is a U-shaped plastic pipe and the radial cross section of the diversion pipe is a racetrack.
9. The method of plugging a well diversion operation of claim 1, wherein the air pipe is a hose, a rubber layer is arranged on the periphery of the air pipe, and the air pipe is in interference fit with the air vent hole.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204753611U (en) * | 2015-06-29 | 2015-11-11 | 宁波大学 | Deep basal pit pressure -bearing water precipitation gas well gas bag plugging device |
| CN105064280A (en) * | 2015-07-16 | 2015-11-18 | 中国水利水电第十四工程局有限公司 | Tunnel underground river water burst blockage construction method |
| CN105569162A (en) * | 2016-01-13 | 2016-05-11 | 北京建工土木工程有限公司 | Method for blocking bilge wells |
| CN109208737B (en) * | 2018-10-09 | 2024-02-06 | 中铁十一局集团城市轨道工程有限公司 | Construction method for new pipe connection and original pipe plugging in large sewage pipeline relocation |
| CN111765318A (en) * | 2020-07-02 | 2020-10-13 | 深圳市市政工程总公司 | Pipeline flow guide structure for pipeline repair |
| CN111853418B (en) * | 2020-07-02 | 2022-06-03 | 深圳市市政工程总公司 | Construction method for pipeline repair |
| CN212900365U (en) * | 2020-07-02 | 2021-04-06 | 深圳市市政工程总公司 | Pipeline flow guide structure for pipeline repair |
| CN111926841A (en) * | 2020-08-04 | 2020-11-13 | 中天建设集团有限公司 | Dewatering well water-carrying plugging structure and construction method thereof |
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