CN114607834A - Pipeline vertical jacking construction method - Google Patents
Pipeline vertical jacking construction method Download PDFInfo
- Publication number
- CN114607834A CN114607834A CN202210333173.XA CN202210333173A CN114607834A CN 114607834 A CN114607834 A CN 114607834A CN 202210333173 A CN202210333173 A CN 202210333173A CN 114607834 A CN114607834 A CN 114607834A
- Authority
- CN
- China
- Prior art keywords
- jacking
- pipe
- mud
- vertical
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 96
- 238000002347 injection Methods 0.000 claims abstract description 28
- 239000007924 injection Substances 0.000 claims abstract description 28
- 239000002689 soil Substances 0.000 claims abstract description 22
- 239000010802 sludge Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 230000001174 ascending effect Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000003973 paint Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 18
- 239000007788 liquid Substances 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000009530 blood pressure measurement Methods 0.000 description 3
- 230000003020 moisturizing effect Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 210000004722 stifle Anatomy 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
- F16L1/036—Laying or reclaiming pipes on land, e.g. above the ground in the ground the pipes being composed of sections of short length
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
- F16L1/11—Accessories therefor, e.g. anchors for the detection or protection of pipes in the ground
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a pipeline vertical jacking construction method, which controls the internal pressure of a soil layer in a bulkhead by controlling the mud discharge speed, the water injection speed and the jacking speed through a semi-open special bulkhead device, so that the soil layer outside the bulkhead keeps stable and the jacking thrust is reduced. The problem of among the prior art construction vertical jacking need pierce through very thick soil layer, when meeting with hard soil layer, the standpipe and back often can be destroyed to too big jacking force is solved, have can greatly reduced and pass through the required jacking force of soil layer, avoid destroying the pipeline is characterized.
Description
Technical Field
The invention belongs to the technical field of civil construction, and particularly relates to a pipeline vertical jacking construction method.
Background
In the middle and later period of the 20 th century, a construction technology for vertically jacking a water taking and discharging port is created in engineering practice, a vertical pipe is usually pushed upwards from a reserved position of a constructed pipeline from a reserved position of the pipeline to penetrate through a soil layer, and then a row and a water taking port are formed. The process has gradually replaced the processes of an island building cofferdam method, a floating open caisson method, a prefabricated sinking method, an offshore immersed tube method and the like, thereby not only quickening the construction progress, reducing the interference with the outside, but also greatly saving the engineering cost. However, when the pipeline is buried deeply, the vertical jacking needs to penetrate through a thick soil layer, and when the pipeline encounters a hard soil layer, the vertical pipe and the back rest are often damaged by excessive jacking force.
The vertical jacking is usually in a closed top mode, the front end of the ascending pipe is in a closed blank plate mode, the tail of the ascending pipe is pushed into the soil layer through a special pipe joint water stop ring by a jack with strong force, and when the pipeline is buried in shallow depth and the soil layer is soft, the method embodies the advantages of less equipment and simple process, but when the pipeline is subjected to the working condition that the hard soil layer cannot penetrate through the pipeline, remedial measures are deficient.
The invention combines the situation that when the ascending pipe construction is carried out in the horizontal pipeline of a certain municipal sewage treatment plant, 15-meter-thick iron plate sand needs to pass through, when the traditional stuffy top is adopted in the early stage, the jacking force of a jack is increased to the maximum bearing pressure of the pipeline and still cannot be jacked, after the jacking force of the jack is continuously increased, a vertical pipe flange is deformed, the outer protective concrete of the vertical pipe cracks, the back rest of the jack also has an overlarge sedimentation phenomenon, and although the offshore sinking pipe replacement filling is feasible, the engineering cost is greatly increased, and the safety risk of offshore construction is increased; therefore, it is necessary to design a vertical pipe jacking construction method to solve the above problems.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a pipeline vertical jacking construction method, which is characterized in that the internal pressure of a soil layer in a bulkhead is controlled by controlling the mud discharging speed, the water injection speed and the jacking speed through a semi-open special bulkhead device, so that the soil layer outside the bulkhead is kept stable and the jacking thrust is reduced.
In order to realize the design, the technical scheme adopted by the invention is as follows: a vertical jacking construction method for a pipeline comprises the following steps:
s1, reinforcing annular ribbed plates on the inner wall of the horizontal top pipe, reserving holes at the jacking position of the vertical pipe at the top of the horizontal top pipe, and making water stopping measures for installing the vertical pipe at the reserved holes;
s2, mounting a split water stop door on the outer wall of the opening of the preformed hole through a hinge;
s3, manufacturing a first section of vertical pipe jacking pipe section, installing the first section of vertical pipe jacking pipe section in a reserved opening of a horizontal jacking pipe, sealing a split door and temporarily sealing the split door; the concrete structure of the first section vertical pipe jacking pipe section is as follows:
a vertical pipe jacking pipe joint comprises a blank plate connected to the top end of the pipe joint, wherein the edge of the blank plate is connected with an annular baffle plate, and the surface of one side of the baffle plate, which faces the center of the pipe joint, is provided with a plurality of water jet holes; the surface of the blank plate below the baffle is provided with a water inlet hole which is connected with a high-pressure water injection pipe;
the surface of the blank plate at the center of the jacking pipe joint is connected with a motor through a bracket, the end part of the motor is connected with a stirring tooth, and the surface of the blank plate below the stirring tooth is provided with a sludge discharge hole connected with a sludge discharge pipeline;
s4, manufacturing a jack support for vertical jacking:
after the horizontal jacking pipe enters the field, installing a jack support on the inner wall of the horizontal jacking pipe below the reserved opening, and assembling a jack and a hydraulic station at the same time;
s5, installing flexible high-pressure water injection pipes and mud discharge pipelines at the reserved mud discharge holes and water inlet holes of the jacking pipe joint of the first section of vertical pipe, wherein the high-pressure water injection pipes are connected with a high-pressure water pump, and the other ends of the high-pressure water injection pipes are connected to a mud-water separation device on the ground; the mud discharge pipeline is connected with a mud pump, and the other end of the mud discharge pipeline is communicated to a mud-water separation device on the ground;
s6, firstly, communicating a high-pressure water source, opening a gate valve of a mud discharge pipeline after water is introduced into the water injection hole, then starting a motor and a jack, and enabling the top end of the jack to contact with the bottom of the jacking pipe through a jacking iron to start jacking;
s7, after the first section of vertical pipe jacking pipe joint is jacked to a preset position, installing a subsequent vertical jacking short joint, and simultaneously prolonging the high-pressure water injection pipe and the mud discharge pipeline; closing the water inlet hole and the sludge discharge hole after the vertical jacking is finished, and dismantling the pipeline; and finally, welding the ascending pipe and the horizontal pipe, constructing the anticorrosive paint, and mounting the four-way valve and the duckbill valve after the jacking pipe joint of the first section of the vertical pipe is dismantled underwater to complete construction.
Preferably, in step S6, the pressure in the sludge discharge pipe is kept higher than the pressure of the groundwater during jacking; the mud pump conveys the mud to a mud-water separation device on the ground through a horizontal pipeline and a working well, the separated muck is transported out of the site, and water enters the high-pressure water injection system again; in the construction process, the mud discharging speed of the pipeline is matched with the jacking speed, so that the soil body above the vertical pipe is in a critical static soil pressure state.
Furthermore, the blank plate is of a semi-open structure, the edge of the blank plate is connected with the end face of the top of the pipe joint, and the middle of the blank plate sinks to the inner wall of the pipe joint to form a groove-shaped structure; the motor and the stirring teeth at the center of the blank plate are connected with the blank plate by a bracket.
Furthermore, the support adopts a supporting plate with a conical structure, and the motor and the stirring teeth are connected to the inner wall of the supporting plate; the outer surface of the supporting plate is of a non-closed hollow structure, so that slurry which is shot by high-pressure water flow can enter the inner area of the supporting plate to be stirred, and is pumped and discharged through the sludge discharge hole.
Furthermore, the top of the annular baffle is set to be a narrowed conical structure, and the top of the annular baffle is matched with the conical structure of the supporting plate, so that the resistance in jacking can be reduced, and the jacking pipe can be jacked conveniently.
Further, the structure of the mud-water separation device is that the inner wall of the mud-water separation device is connected with a filter layer, a drainage bin is arranged below the filter layer, and one end of the drainage bin is connected with a high-pressure water pump through a high-pressure water injection pipe; the lateral part of the drainage bin is provided with a water replenishing port connected with an external water source, the inner wall of the drainage bin is connected with a liquid level transmitter and a controller which are electrically connected, the liquid level transmitter detects the liquid level height inside the drainage bin, and the feedback control water replenishing port performs quantitative water replenishing.
Further, the filtering layer includes the filter screen of top, and filter screen below certain distance department is provided with the drainage layer, and the drainage layer both sides are provided with the perforated plate as supporting, and the drainage in situ is inside from last to including metalling, sand bed and porous activated carbon down in proper order.
Furthermore, a sludge discharge bin is arranged above the filtering layer, and a spiral feeder is arranged in the sludge discharge bin; the tail end of the spiral feeder is provided with a sludge discharge outlet which is connected with an electric gate valve; arrange mud storehouse inner wall side surface and be connected with pressure measurement, screw feeder, electronic push-pull valve and pressure measurement all with controller electric connection, detect the pressure in the mud storehouse through pressure measurement, open screw feeder and electronic push-pull valve when pressure reachs the default and arrange mud.
Furthermore, the pressure detection device comprises a detection box with an opening at one end, the inner wall of the detection box is connected with a piston rod in a sliding manner, one end of the piston rod, which is positioned outside, is connected with a pressure detection plate, the other end of the piston rod is connected with a pressing plate through a spring, and the pressing plate is in contact fit with a pressure sensor on the inner wall of the detection box; the pressure detection plate is connected with the outer surface of the detection box through a flexible telescopic sleeve, and is used as a sealing and waterproof component through the flexible telescopic sleeve.
Further, the outer surface of a spiral sheet of the spiral feeder is connected with a cleaning rod, and the surface of the cleaning rod is connected with a brush for contacting with a filter screen for cleaning.
The invention has the following beneficial effects:
1. when the soil layer cannot pass through the hard soil layer due to the restriction of pipeline stress and horizontal pipe settlement, the construction scheme can greatly reduce the jacking force required by the soil layer passing through and avoid damaging the pipeline;
2, the mud discharging pipeline and the water injection pipeline do not need to be erected again, and the grouting pipe and the mud discharging pipeline can be used when the horizontal pipeline is jacked in, so that the time efficiency is greatly improved;
3, the equipment is simple, and only water injection holes, pipelines, mud discharge pipes and slurry stirring equipment need to be added compared with the traditional stifle;
4, compared with the excavation and replacement of the water casing, the construction cost is only about 1/3; the jacking device can be used as a standby treatment measure for vertical jacking, so that the success rate is greatly improved;
and 5, mud and water are fully separated from the slurry in the construction, and the separated water source is recycled, so that the water consumption and the slurry discharge amount in the construction process are greatly reduced, and the purposes of energy conservation and emission reduction are achieved.
Drawings
FIG. 1 is a schematic view of the construction process of the present invention;
FIG. 2 is a schematic view of the construction process of the present invention;
FIG. 3 is a schematic structural view of a first section of a vertical tube riser of the present invention;
FIG. 4 is an enlarged view taken at A in FIG. 2 according to the present invention;
FIG. 5 is a schematic view showing an internal structure of a sludge-water separating apparatus in embodiment 2 of the present invention;
FIG. 6 is a schematic structural view of a pressure detecting apparatus in the mud-water separating apparatus in embodiment 2 of the present invention;
in the figure: the device comprises a motor 1, a stirring tooth 2, a water jetting hole 3, a mud discharge pipeline 4, a high-pressure water injection pipe 5, top iron 6, a jack 7, a split water stop gate 8, a hinge 9, a hydraulic station 10, a high-pressure water pump 11, a mud-water separation device 12, a mud pump 13, a filter screen 14, a water filtering layer 15, a screw feeder 16, a liquid level transmitter 17, a water replenishing port 18, an electric gate valve 19, a pressure detection device 20, a detection box 21, a piston rod 22, a pressure detection plate 23, a spring 24, a pressing plate 25, a pressure sensor 26, a flexible telescopic sleeve 27 and a cleaning rod 28.
Detailed Description
Example 1:
as shown in fig. 1 to 4, a vertical jacking construction method for a pipeline includes the following steps:
s1, reinforcing annular ribbed plates on the inner wall of the horizontal top pipe, reserving an opening at the jacking position of the vertical pipe at the top of the horizontal top pipe, and making a water stopping measure for installing the vertical pipe at the reserved opening;
s2, mounting a split water stop door 8 on the outer wall of the opening of the preformed hole through a hinge 9;
s3, manufacturing a first section of vertical pipe jacking pipe section, installing the first section of vertical pipe jacking pipe section in a reserved opening of a horizontal jacking pipe, and sealing the split door and temporarily sealing the split door; the concrete structure of the first section vertical pipe jacking pipe section is as follows:
a vertical pipe jacking pipe joint comprises a blank plate connected to the top end of the pipe joint, wherein the edge of the blank plate is connected with an annular baffle plate, and the surface of one side of the baffle plate, which faces the center of the pipe joint, is provided with a plurality of water jet holes 3; the surface of the blank plate below the baffle is provided with a water inlet hole which is connected with a high-pressure water injection pipe 5;
the surface of the blank plate at the center of the jacking pipe joint is connected with a motor 1 through a bracket, the end part of the motor 1 is connected with a stirring tooth 2, and the surface of the blank plate below the stirring tooth 2 is provided with a sludge discharge hole which is connected with a sludge discharge pipeline 4;
s4, manufacturing a jack 7 support for vertical jacking:
after the horizontal jacking pipe enters the field, installing a jack 7 support on the inner wall of the horizontal jacking pipe below the reserved opening, and assembling the jack 7 and the hydraulic station 10 at the same time;
s5, installing a flexible high-pressure water injection pipe 5 and a mud discharge pipeline 4 at a mud discharge hole and a water inlet hole reserved in the jacking pipe joint of the first vertical pipe, wherein the high-pressure water injection pipe 5 is connected with a high-pressure water pump 11, and the other end of the high-pressure water injection pipe is connected to a mud-water separation device 12 on the ground; the mud discharge pipeline 4 is connected with a mud pump 13, and the other end of the mud discharge pipeline is communicated to a mud-water separation device 12 on the ground;
s6, firstly, communicating a high-pressure water source, opening a gate valve of the sludge discharge pipeline 4 after the water injection hole 3 is filled with water, then starting the motor 1 and the jack 7, and enabling the top end of the jack 7 to contact with the bottom of the jacking pipe through the jacking iron 6 to start jacking;
s7, after the first section of vertical pipe jacking pipe joint is jacked to a preset position, installing a subsequent vertical jacking short joint, and simultaneously prolonging the high-pressure water injection pipe 5 and the mud discharge pipeline 4; after the vertical jacking is finished, closing the water inlet hole and the sludge discharge hole, and dismantling the pipeline; and finally, welding the ascending pipe and the horizontal pipe, constructing the anticorrosive paint, and mounting the four-way valve and the duckbill valve after the jacking pipe joint of the first section of the vertical pipe is dismantled underwater to complete construction.
Preferably, in step S6, the pressure in the sludge discharge pipe 4 is maintained higher than the pressure of the groundwater during jacking; the mud pump 13 conveys mud to a mud-water separation device 12 on the ground through a horizontal pipeline and a working well, separated muck is transported out of a site, and water enters a high-pressure water injection system again; in the construction process, the mud discharging speed of the pipeline is matched with the jacking speed, so that the soil body above the vertical pipe is in a critical static soil pressure state.
Furthermore, the blank plate is of a semi-open structure, the edge of the blank plate is connected with the end face of the top of the pipe joint, and the middle of the blank plate sinks to the inner wall of the pipe joint to form a groove-shaped structure; the motor 1 and the stirring teeth 2 at the center of the blank plate are connected with the blank plate by a bracket.
Furthermore, the support adopts a supporting plate with a conical structure, and the motor 1 and the stirring teeth 2 are connected to the inner wall of the supporting plate; the outer surface of the supporting plate is of a non-closed hollow structure, so that slurry which is subjected to high-pressure water flow lasing conveniently enters the inner area of the supporting plate to be stirred, and is pumped and discharged through the sludge discharge hole.
Furthermore, the top of the annular baffle is set to be a narrowed conical structure, and the top of the annular baffle is matched with the conical structure of the supporting plate, so that the resistance in jacking can be reduced, and the jacking pipe can be jacked conveniently.
Example 2:
as shown in fig. 5 to 6, the mud-water separating device 12 in step S5 has the following structure:
the inner wall of the mud-water separation device 12 is connected with a filter layer, a drainage bin is arranged below the filter layer, and one end of the drainage bin is connected with a high-pressure water pump 11 through a high-pressure water injection pipe 5; drainage storehouse lateral part is provided with moisturizing mouth 18 and is connected with external water source, and drainage storehouse inner wall is connected with liquid level transmitter 17 and controller electric connection, and liquid level transmitter 17 detects the inside liquid level height in drainage storehouse, and feedback control moisturizing mouth 18 carries out quantitative moisturizing.
Further, the liquid level transmitter 17 is selected to be a DX130 liquid level sensor, the controller is preferably a Siemens S7-300PLC controller, and the controller is arranged in a central control room and connected to a central control system.
Further, the filtering layer includes the filter screen 14 of top, and filter screen 14 below certain distance department is provided with drainage layer 15, and drainage layer 15 both sides are provided with the perforated plate as supporting, and drainage layer 15 is inside from last to including metalling, sand bed and porous activated carbon down in proper order.
Further, a sludge discharge bin is arranged above the filtering layer, and a spiral feeder 16 is arranged in the sludge discharge bin; the tail end of the spiral feeder 16 is provided with a sludge discharge outlet which is connected with an electric gate valve 19; the side surface of the inner wall of the mud discharging bin is connected with a pressure detection device 20, the spiral feeder 16, the electric gate valve 19 and the pressure detection device 20 are all electrically connected with the controller, the pressure in the mud discharging bin is detected through the pressure detection device 20, and the spiral feeder 16 and the electric gate valve 19 are opened to discharge mud when the pressure reaches a preset value.
Further, the pressure detection device 20 comprises a detection box 21 with an opening at one end, a piston rod 22 is connected to the inner wall of the detection box 21 in a sliding manner, one end of the piston rod 22 located outside is connected with a pressure detection plate 23, the other end is connected with a pressure plate 25 through a spring 24, and the pressure plate 25 is in contact fit with a pressure sensor 26 on the inner wall of the detection box 21; the pressure detecting plate 23 is connected to the outer surface of the cartridge 21 through a flexible bellows 27, and serves as a sealing and waterproof member through the flexible bellows 27.
Further, the pressure sensor 26 is preferably a flexible membrane pressure sensor 26 of the type RP-S40-ST.
Further, a cleaning rod 28 is attached to the outer surface of the spiral blade of the screw feeder 16, and a brush is attached to the surface of the cleaning rod 28 for contacting the screen 14 for cleaning.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (2)
1. A vertical jacking construction method for pipelines is characterized by comprising the following steps: the method comprises the following steps:
s1, reinforcing annular ribbed plates on the inner wall of the horizontal top pipe, reserving holes at the jacking position of the vertical pipe at the top of the horizontal top pipe, and making water stopping measures for installing the vertical pipe at the reserved holes;
s2, installing a split water stop door (8) on the outer wall of the opening of the preformed hole through a hinge (9);
s3, manufacturing a first section of vertical pipe jacking pipe section, installing the first section of vertical pipe jacking pipe section in a reserved opening of a horizontal jacking pipe, and sealing the split door and temporarily sealing the split door; the concrete structure of the first section vertical pipe jacking pipe section is as follows:
a vertical pipe jacking pipe joint comprises a blank plate connected to the top end of the pipe joint, wherein the edge of the blank plate is connected with an annular baffle, and the surface of one side of the baffle, which faces the center of the pipe joint, is provided with a plurality of water jetting holes (3); the surface of the blank plate below the baffle is provided with a water inlet hole which is connected with a high-pressure water injection pipe (5);
the surface of the blank plate at the center of the jacking pipe joint is connected with a motor (1) through a support, the end part of the motor (1) is connected with a stirring tooth (2), and the surface of the blank plate below the stirring tooth (2) is provided with a sludge discharge hole which is connected with a sludge discharge pipeline (4);
s4, manufacturing a jack support for vertical jacking:
after the horizontal jacking pipe enters the field, a jack support is installed on the inner wall of the horizontal jacking pipe below the reserved opening, and a jack (7) and a hydraulic station (10) are assembled at the same time;
s5, installing a flexible high-pressure water injection pipe (5) and a mud discharging pipeline (4) at a mud discharging hole and a water inlet hole reserved in the jacking pipe joint of the first vertical pipe, connecting the high-pressure water injection pipe (5) with a high-pressure water pump (11), and connecting the other end of the high-pressure water injection pipe with a mud-water separation device (12) on the ground; the mud discharge pipeline (4) is connected with a mud pump (13), and the other end of the mud discharge pipeline is communicated with a mud-water separation device (12) on the ground;
s6, communicating a high-pressure water source, opening a gate valve of a mud discharge pipeline (4) after water is injected into the water injection hole (3), starting a motor (1) and a jack (7), and enabling the top end of the jack (7) to contact with the bottom of the jacking pipe through a jacking iron (6) to start jacking;
s7, after the first section of vertical pipe jacking pipe joint is jacked to a preset position, installing a subsequent vertical jacking short joint, and simultaneously prolonging the high-pressure water injection pipe (5) and the mud discharge pipeline (4); closing the water inlet hole and the sludge discharge hole after the vertical jacking is finished, and dismantling the pipeline; and finally, welding the ascending pipe and the horizontal pipe, constructing the anticorrosive paint, and mounting the four-way valve and the duckbill valve after the jacking pipe joint of the first section of the vertical pipe is dismantled underwater to complete construction.
2. The pipeline vertical jacking construction method according to claim 1, wherein: in step S6, the pressure in the sludge discharge pipeline is kept higher than the pressure of underground water during jacking; the mud pump (13) conveys mud to a mud-water separation device (12) on the ground through a horizontal pipeline and a working well, separated muck is transported out of a site, and water enters a high-pressure water injection system again; in the construction process, the mud discharging speed of the pipeline is matched with the jacking speed, so that the soil body above the vertical pipe is in a critical static soil pressure state.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210333173.XA CN114607834A (en) | 2022-03-31 | 2022-03-31 | Pipeline vertical jacking construction method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210333173.XA CN114607834A (en) | 2022-03-31 | 2022-03-31 | Pipeline vertical jacking construction method |
Publications (1)
Publication Number | Publication Date |
---|---|
CN114607834A true CN114607834A (en) | 2022-06-10 |
Family
ID=81866905
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202210333173.XA Pending CN114607834A (en) | 2022-03-31 | 2022-03-31 | Pipeline vertical jacking construction method |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN114607834A (en) |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10160040A (en) * | 1996-11-27 | 1998-06-16 | Takasago Thermal Eng Co Ltd | Vertical piping construction, temporarily fixing device therefor, and piping bent preventing jig for vertical piping construction |
CN2460824Y (en) * | 2000-11-10 | 2001-11-21 | 镇江煤矿专用设备厂 | Mud water balance push bench |
CN201809265U (en) * | 2010-06-10 | 2011-04-27 | 上海市第二市政工程有限公司 | Concentration treatment device for waste mud of high pressure jet grouting pile |
CN102278119A (en) * | 2011-07-01 | 2011-12-14 | 河海大学 | Construction method for muddy water pressurization shield of grid knife flywheel and construction equipment thereof |
CN204986220U (en) * | 2015-09-14 | 2016-01-20 | 葛洲坝机械工业有限公司 | Intraductal mechanism of shuttling back and forth |
CN107461197A (en) * | 2017-09-30 | 2017-12-12 | 中铁工程装备集团有限公司 | A kind of drop shaft sinking shaft excavation machine and its construction method |
CN107694156A (en) * | 2017-11-27 | 2018-02-16 | 山东赛恩环保设备有限公司 | A kind of boat form settlement of sewage processing unit |
CN110284897A (en) * | 2019-07-09 | 2019-09-27 | 中建七局安装工程有限公司 | A kind of jacking construction engineering method under major diameter cobble complex geological condition |
CN209907415U (en) * | 2019-01-21 | 2020-01-07 | 中亿丰隧道工程股份有限公司 | Vertical jacking opening device for jacking pipe |
CN110860131A (en) * | 2019-11-18 | 2020-03-06 | 陈君君 | Sponge city sump pit's device of decontaminating |
CN111577977A (en) * | 2020-06-16 | 2020-08-25 | 上海市机械施工集团有限公司 | Pipe joint connecting structure |
CN112177630A (en) * | 2020-11-17 | 2021-01-05 | 上海市机械施工集团有限公司 | Device and method for vertically jacking shield tunnel |
CN213253243U (en) * | 2020-09-21 | 2021-05-25 | 马鞍山澳新水务处理有限公司 | Sludge discharge device for sewage treatment |
CN114045869A (en) * | 2021-10-20 | 2022-02-15 | 上海市基础工程集团有限公司 | Vertical jacking construction method for preformed hole |
-
2022
- 2022-03-31 CN CN202210333173.XA patent/CN114607834A/en active Pending
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10160040A (en) * | 1996-11-27 | 1998-06-16 | Takasago Thermal Eng Co Ltd | Vertical piping construction, temporarily fixing device therefor, and piping bent preventing jig for vertical piping construction |
CN2460824Y (en) * | 2000-11-10 | 2001-11-21 | 镇江煤矿专用设备厂 | Mud water balance push bench |
CN201809265U (en) * | 2010-06-10 | 2011-04-27 | 上海市第二市政工程有限公司 | Concentration treatment device for waste mud of high pressure jet grouting pile |
CN102278119A (en) * | 2011-07-01 | 2011-12-14 | 河海大学 | Construction method for muddy water pressurization shield of grid knife flywheel and construction equipment thereof |
CN204986220U (en) * | 2015-09-14 | 2016-01-20 | 葛洲坝机械工业有限公司 | Intraductal mechanism of shuttling back and forth |
CN107461197A (en) * | 2017-09-30 | 2017-12-12 | 中铁工程装备集团有限公司 | A kind of drop shaft sinking shaft excavation machine and its construction method |
CN107694156A (en) * | 2017-11-27 | 2018-02-16 | 山东赛恩环保设备有限公司 | A kind of boat form settlement of sewage processing unit |
CN209907415U (en) * | 2019-01-21 | 2020-01-07 | 中亿丰隧道工程股份有限公司 | Vertical jacking opening device for jacking pipe |
CN110284897A (en) * | 2019-07-09 | 2019-09-27 | 中建七局安装工程有限公司 | A kind of jacking construction engineering method under major diameter cobble complex geological condition |
CN110860131A (en) * | 2019-11-18 | 2020-03-06 | 陈君君 | Sponge city sump pit's device of decontaminating |
CN111577977A (en) * | 2020-06-16 | 2020-08-25 | 上海市机械施工集团有限公司 | Pipe joint connecting structure |
CN213253243U (en) * | 2020-09-21 | 2021-05-25 | 马鞍山澳新水务处理有限公司 | Sludge discharge device for sewage treatment |
CN112177630A (en) * | 2020-11-17 | 2021-01-05 | 上海市机械施工集团有限公司 | Device and method for vertically jacking shield tunnel |
CN114045869A (en) * | 2021-10-20 | 2022-02-15 | 上海市基础工程集团有限公司 | Vertical jacking construction method for preformed hole |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107326918B (en) | Hidden type plugging impervious water collecting well penetrating through raft plates and construction process thereof | |
CN103741671A (en) | Groundwater recharge system structure for foundation pit dewatering | |
CN101787702A (en) | Effective vacuum dewatering method | |
KR20210016339A (en) | Foundation for structures | |
CN111576423A (en) | Pile foundation sediment cleaning device and method | |
CN113279421A (en) | Vacuum dewatering process for deep foundation pit | |
CN111119985B (en) | Automatic drainage hole collapse preventing device and method for downward drilling | |
CN106088123A (en) | A kind of sand geology steel tube well fall water level device and construction method thereof | |
CN114607834A (en) | Pipeline vertical jacking construction method | |
CN205224063U (en) | High -efficient precipitation device of hypotonicity clay | |
CN116537155A (en) | Large-caliber siphon sand well of tailing pond and construction method thereof | |
CN116024998A (en) | Construction method for water-sealing blocking of deep foundation pit dewatering well | |
CN211547782U (en) | Pipe well sealing device for high-pressure water head of sand layer deep foundation pit | |
CN219431796U (en) | Well flushing device suitable for deep foundation pit excavation tubular well dewatering | |
CN104060636B (en) | Pressure release anti-float method during high water level regional architecture foundation construction and device | |
CN114250801A (en) | Pipe well and light well point combined dewatering construction method | |
CN221220533U (en) | Tunnel fire-fighting water supply system manufactured by utilizing tunnel deep foundation pit dewatering well | |
CN111851548A (en) | Dewatering inclined shaft in deep foundation pit and construction method thereof | |
CN214245858U (en) | Anti-floating drainage structure for underground structure | |
CN221259132U (en) | High-efficient pumping and filling well device | |
CN219100100U (en) | Quick plugging device of deep basal pit dewatering well | |
CN214993995U (en) | Reverse slope drainage system suitable for deep foundation pit dewatering | |
CN219732050U (en) | Precipitation device of foundation pit local shallow layer self-priming pump | |
CN217352631U (en) | Anti-floating anti-seepage pressure reduction treatment device for existing underground garage bottom plate | |
CN216714346U (en) | Drilling water pumping test orifice device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |