CN111287217B - A construction system and method for a pipe gallery with integrally prefabricated pipe sections and inner partitions - Google Patents
A construction system and method for a pipe gallery with integrally prefabricated pipe sections and inner partitions Download PDFInfo
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- CN111287217B CN111287217B CN202010283939.9A CN202010283939A CN111287217B CN 111287217 B CN111287217 B CN 111287217B CN 202010283939 A CN202010283939 A CN 202010283939A CN 111287217 B CN111287217 B CN 111287217B
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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
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/124—Helical conveying means therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/126—Loading devices or installations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
一种管节与内隔板整体预制的管廊的施工体系及施工方法，管廊包括整体预制的管节和内隔板；管节侧壁上设有注浆孔；施工体系包括出土系统、减摩注浆管系统和顶进系统；出土系统包括螺旋出土机、托泵和泵管；托泵与螺旋出土机相连；泵管一端与托泵连接，泵管另一端伸入渣土池中；泵管与托泵间设有高压注水环；减摩注浆管系统包括注浆管和注浆阀；注浆阀与注浆孔对应设置；注浆阀包括横管段和纵管段；纵管段端口与注浆孔连接；注浆管数量比注浆阀数量少两个，且对应连在相邻注浆阀之间；最底部两个注浆阀一端端口留作浆液注入口；在内隔板上设有预埋钢管。本发明解决了传统的顶管管廊施工中管节与内隔板整体性差，现场拼装或现浇施工不易的技术问题。
A construction system and method for a pipe gallery with integrally prefabricated pipe sections and inner baffles, the pipe gallery comprises integrally prefabricated pipe sections and inner baffles; grouting holes are arranged on the side walls of the pipe sections; the construction system comprises an excavation system, a friction-reducing grouting pipe system and a jacking system; the excavation system comprises a spiral excavator, a support pump and a pump pipe; the support pump is connected to the spiral excavator; one end of the pump pipe is connected to the support pump, and the other end of the pump pipe extends into a slag pool; a high-pressure water injection ring is arranged between the pump pipe and the support pump; the friction-reducing grouting pipe system comprises a grouting pipe and a grouting valve; the grouting valve is arranged correspondingly to the grouting hole; the grouting valve comprises a horizontal pipe section and a longitudinal pipe section; the port of the longitudinal pipe section is connected to the grouting hole; the number of grouting pipes is two less than the number of grouting valves, and they are correspondingly connected between adjacent grouting valves; one end port of the two grouting valves at the bottom is reserved as a slurry injection port; and a pre-buried steel pipe is arranged on the inner baffle. The invention solves the technical problems that the integrity of the pipe section and the inner baffle is poor in the traditional jacking pipe gallery construction, and it is difficult to assemble on site or cast-in-place.
Description
Technical Field
The invention belongs to the technical field of urban underground comprehensive pipe gallery engineering, and particularly relates to a construction system and a construction method of a pipe gallery with integrally prefabricated pipe joints and inner partition plates.
Background
Utility tunnel is an important infrastructure and lifeline that ensures urban operation. In recent years, china is greatly pushing urban comprehensive pipe gallery construction, important barriers such as expressways, railways, municipal roads, rivers and the like are frequently worn in the pipe gallery construction process, and the traditional construction method construction has great influence on the barriers and cannot meet the construction requirements of the pipe gallery. The rectangular pipe jacking pipe gallery construction has the advantages of no damage to the road surface structure, controllable ground subsidence, high jacking speed, short construction period and the like, and is widely adopted. The rectangular pipe jacking method generally adopts an underground mechanical closed system for construction, and the system has the advantages of high construction safety, no dust, low noise, environment friendliness, safety and the like.
Because the pipe gallery has the requirement of dividing the cabin, an inner baffle plate is arranged in the pipe gallery. The method for assembling the prefabricated inner partition plate and the cast-in-situ inner partition plate after jacking construction is adopted in the multi-cabin roof pipe gallery construction at present, the method for assembling the prefabricated inner partition plate requires large mechanical equipment to enter the field for assembling and constructing when assembling on site, the problems of inconvenient site construction, positioning errors and the like are caused, in addition, when nodes are processed, the prefabricated partition wall and the pipe sections are generally connected by using screws, the durability of the screws is poor, the service life of 100 years cannot be guaranteed, and in addition, the integrity of the pipe gallery pipe sections and the inner partition plates is poor. The method for casting the prefabricated inner partition plate in situ after jacking construction is characterized in that the height of the inner partition plate is usually 5-9 m, the formwork support is large in investment in cast-in-situ construction, difficult to set, high in cost and inconvenient in construction and long in construction period, and the compactness of concrete at the top of the inner partition plate cannot be guaranteed, so that the structural integrity is influenced, and potential quality hazards exist.
Disclosure of Invention
The invention aims to provide a construction system and a construction method of a pipe gallery with integrally prefabricated pipe sections and inner partition plates, which aim to solve the technical problems that in the traditional pipe gallery construction of a pipe jacking pipe, the pipe sections and the inner partition plates are poor in integrity, and the on-site assembly or cast-in-place construction is difficult.
In order to achieve the above purpose, the present invention adopts the following technical scheme.
The construction system of the pipe gallery integrally prefabricated by the pipe joint and the inner partition plate comprises the pipe joint and the inner partition plate, grouting holes are formed in the side wall of the pipe joint at intervals in the circumferential direction, the construction system comprises a soil discharging system, an antifriction grouting pipe system and a jacking system, the soil discharging system comprises a spiral soil discharging machine, a supporting pump and a pump pipe, the spiral soil discharging machine is arranged in a tunnel and used for discharging slag soil cut down in front of the pipe gallery, the supporting pump is connected with a discharge port of the spiral soil discharging machine, one end of the pump pipe is connected with the supporting pump, the other end of the pump pipe penetrates through the pipe gallery and stretches into a slag soil pool arranged at the top of a working well, high-pressure grouting rings are arranged between the pump pipe and the supporting pump and used for injecting high-pressure water into the pump pipe, the antifriction grouting pipe system comprises grouting pipes and grouting valves, the grouting valves are arranged in a group and correspond to the grouting holes, the grouting valves are arranged in a T shape and comprise grouting pipes, the grouting valves are arranged at the positions corresponding to the two ends of the grouting pipe sections, and the grouting valves are arranged at the positions corresponding to the two ends of the grouting valves, and the two ends of the grouting valves are arranged at the positions corresponding to the two ends of the grouting valves, and the grouting valves are smaller than the corresponding to the positions of the grouting valves.
Preferably, the section of the pipe joint is rectangular, at least one of the inner partition plates is arranged inside the pipe joint, and divides the pipe joint into at least two chambers.
Preferably, the distance between adjacent grouting holes is 1-3 m.
Preferably, one end of the high-pressure water injection ring is in threaded connection with the pump pipe, and the other end of the high-pressure water injection ring is in threaded connection with the backing pump.
Preferably, the jacks are respectively arranged on two sides of the pipe gallery, and the jack horizontal plane is arranged between the tail ends of the vertical plates of the pipe joints and the side wall of the working well.
A construction method of a construction system of a pipe gallery with integrally prefabricated pipe joints and inner partition plates comprises the following steps.
And firstly, manufacturing a pipe gallery, namely integrally prefabricating an inner partition plate and a pipe joint in a prefabricating field, wherein an embedded steel pipe is embedded in the inner partition plate.
And step two, completing the installation of the push bench and the installation of the matched equipment in the working well.
And thirdly, arranging an antifriction grouting pipe system in the pipe gallery, namely correspondingly connecting grouting valves with grouting holes, and connecting the grouting pipes between adjacent grouting valves, wherein no grouting pipe is arranged between two grouting valves at the bottommost part, and a port at one end of each grouting valve is reserved as a slurry injection port.
And step four, installing an unearthing system.
And fifthly, hanging one section of pipe gallery into a working well, providing a jacking force for the pipe gallery by a jack, tunneling by a pipe jacking machine, discharging soil by a spiral soil discharging machine, grouting around the pipe gallery to be jacked by adopting an antifriction grouting pipe system, and jacking the pipe gallery.
And step six, adopting a backing pump and a pump pipe to convey soil to the outside of the working well, and simultaneously adopting a high-pressure water injection ring to inject high-pressure water into the pump pipe so as to reduce friction resistance between the slag soil and the wall of the pump pipe.
And seventhly, in the jacking process, sealing gaps between the inner partition plate of the jacking pipe gallery and the inner partition plate of the pipe gallery in front of the inner partition plate.
And step eight, repeating the processes from the step five to the step seven until all pipe galleries are jacked in place, and finishing the construction.
Preferably, when the pipe gallery is twisted in the jacking process, the method further comprises a step a, namely rectifying the deviation of the pipe gallery by adopting a jack between the step five and the step six.
Preferably, the joint filling and sealing of the gap in the step six is specifically that a joint filling plate is firstly adopted to be placed in the gap of the inner partition plate, and then sealing paste is adopted to fill the gap.
Compared with the prior art, the invention has the following characteristics and beneficial effects.
1. The construction method of the multi-cabin rectangular pipe-jacking pipe gallery integrally prefabricated by the pipe joints and the inner partition plates solves the problems of key links such as slag discharge and grouting of the pipe joints with the middle partition plates in the prefabrication process and the jacking process and the treatment of joints of the middle partition plates of the later pipe joints, and has the advantages of high soil discharge efficiency, high construction speed and good pipe gallery integrity.
2. The pipe gallery integrally cast by the inner partition plate and the pipe joint cannot adopt a common rail slag car for transporting the slag in jacking construction, so that the invention adopts a trackless transportation, namely pumping, one-way pumping and discharging of the slag, and a slag pumping system is simple and comprises a supporting pump arranged at a discharge hole of a pipe jacking spiral soil outlet machine and a pump pipe which is connected with the supporting pump and extends to a ground slag pool, and meanwhile, a high-pressure water injection ring is adopted for reducing resistance between the slag and the pipe wall, so that the pumping distance is increased, the probability of blocking the pipe by the slag is reduced, and the soil outlet efficiency is improved.
3. The construction method comprises the steps of prefabricating an inner partition wall and a pipe joint in a prefabricating field integrally, reserving steel pipe grouting pipeline holes in the inner partition wall, facilitating arrangement of antifriction grouting pipe systems in the pipe joint, filling holes with expansion cement mortar after jacking construction is finished, pumping and discharging soil by adopting a trackless transportation or pumping mode in the normal jacking process, reducing resistance between the soil and the pipe wall by adopting a high-pressure water injection ring, improving the soil outlet efficiency, adjusting jacking force of jacks at the left side and the right side, timely reversing cutterhead, performing pipe joint torsion correction, guaranteeing accuracy of jacking positions of pipe galleries, and sealing gaps between the inner partition wall by adopting a caulking plate in the jacking process, and guaranteeing tightness of each cabin of the pipe galleries by adopting sealing paste caulking after jacking.
Drawings
The invention is described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a construction system of the present invention.
Fig. 2 is a schematic front view of a piping lane according to the present invention.
Fig. 3 is a schematic view of a longitudinal sectional structure of a pipe lane according to the present invention.
FIG. 4 is a schematic view of the construction of the grouting valve in the present invention.
Fig. 5 is a schematic view of the connection structure of adjacent pipe lanes in the present invention.
The reference numerals are 1-pipe gallery, 1.1-pipe section, 1.2-inner partition plate, 2-grouting hole, 3-spiral soil outlet, 4-tunnel, 5-support pump, 6-pump pipe, 7-working well, 8-muck pool, 9-high pressure water injection ring, 10-grouting pipe, 11-grouting valve, 11.1-horizontal pipe section, 11.2-vertical pipe section, 12-slurry injection port, 13-pre-buried steel pipe, 14-jack, 15-joint filling plate and 16-sealing paste.
Detailed Description
As shown in figures 1-5, the pipe gallery 1 comprises a pipe joint 1.1 and an inner partition plate 1.2, the pipe joint 1.1 and the inner partition plate 1.2 are integrally prefabricated, grouting holes 2 are formed in the side wall of the pipe joint 1.1 at intervals along the circumferential direction, the construction system comprises a soil outlet system, an antifriction grouting pipe system and a jacking system, the soil outlet system comprises a spiral soil outlet machine 3, a backing pump 5 and a pump pipe 6, the spiral soil outlet machine 3 is arranged in a tunnel 4 and used for outputting slag soil cut in front of the pipe gallery 1, the backing pump 5 is connected with a discharge port of the spiral soil outlet machine 3, one end of the pump pipe 6 is connected with the backing pump 5, the other end of the pump pipe 6 penetrates through the pipe gallery 1 and stretches into a slag pool 8 arranged at the top of a working well 7, a high-pressure grouting ring 9 is arranged between the pump pipe 6 and the backing pump 5, the high-pressure grouting ring 9 is used for injecting slurry into the grouting pipe 6, the grouting pipe comprises a grouting valve 10 and a grouting pipe section 11, the grouting pipe section is provided with a corresponding to the number of the grouting holes 11, the grouting pipe section is provided with a vertical grouting pipe section 11 and a corresponding to the grouting section 11, the grouting section 11 is provided with a corresponding hole 11, and a grouting section 11 is provided at the bottom 11.11 and a corresponding hole 11.11.
In this embodiment, the section of the pipe section 1.1 is rectangular, at least one of the inner partition plates 1.2 is disposed inside the pipe section 1.1, and divides the pipe section 1.1 into at least two chambers.
In this embodiment, the distance between adjacent grouting holes 2 is 1 to 3m, which is related to the size of the pipe joint 1.1.
In this embodiment, one end of the high-pressure water injection ring 9 is in threaded connection with the pump pipe 6, and the other end of the high-pressure water injection ring 9 is in threaded connection with the backing pump 5.
In the embodiment, the jacks 14 are respectively arranged on two sides of the pipe gallery 1 in a group, and the jacks 14 are horizontally arranged between the tail ends of the vertical plates of the pipe sections 1.1 and the side walls of the working well 7.
In this embodiment, the spiral soil outlet machine 3 is arranged on the pipe pushing machine and is used for outputting the cut soil body.
In this embodiment, a pad is arranged between the jack 14 and the side wall of the working well 7.
The construction method of the construction system comprises the steps of integrally prefabricating an inner partition plate 1.2 and a pipe joint 1.1 in a prefabricating field, reserving grouting pipeline holes in the inner partition plate 1.2, arranging pre-buried steel pipes 13 in the grouting pipeline holes, facilitating arrangement of an antifriction grouting pipe system in the pipe joint 1.1, pumping and discharging waste soil in a trackless transportation or pumping mode in a normal jacking process, adopting a high-pressure water injection ring 9 to inject water to reduce resistance between the waste soil and a pipe wall, adopting a caulking plate 15 to seal gaps between adjacent middle partition wall gaps in the jacking process, and then using sealing paste 16 to caulking, when jacking, if the pipe gallery 1 is twisted, adopting jack 14 on the left side and the right side to adjust the jacking force, timely reversing cutter head measures to twist and correct the pipe gallery 1, dismantling the antifriction grouting pipe system after jacking construction is finished, and filling holes with expanded cement mortar.
Firstly, manufacturing a pipe gallery 1, namely integrally prefabricating an inner partition board 1.2 and a pipe joint 1.1 in a prefabrication field, and pre-burying steel pipes 13 in the inner partition board 1.2.
And step two, completing the installation of the push bench and the installation of the matched equipment in the working well 7.
And thirdly, arranging an antifriction grouting pipe system in the pipe gallery 1, namely correspondingly connecting grouting valves 11 with grouting holes 2, and connecting grouting pipes 10 between adjacent grouting valves 11, wherein no grouting pipe 10 is arranged between two grouting valves 11 at the bottommost part, and a port at one end of each grouting valve 11 is reserved as a slurry injection port 12.
And step four, installing an unearthing system.
And fifthly, hanging one section of pipe gallery 1 into a working well 7, providing a jacking force for the pipe gallery 1 by a jack 14, tunneling by a pipe jacking machine, discharging soil by a spiral soil discharging machine 3, grouting around the pipe gallery 1 to be jacked by adopting an antifriction grouting pipe system, and jacking the pipe gallery 1.
And step six, adopting the backing pump 5 and the pump pipe 6 to convey soil to the outside of the working well 7, and simultaneously adopting the high-pressure water injection ring 9 to inject high-pressure water into the pump pipe so as to reduce friction resistance between the slag soil and the pipe wall of the pump pipe 6.
And seventhly, in the jacking process, a gap between the inner partition plate 1.2 of the jacking pipe gallery 1 and the inner partition plate 1.2 of the pipe gallery 1 in front of the jacking pipe gallery is sealed in a caulking manner.
And step eight, repeating the processes from the step five to the step seven until all the pipe galleries 1 are jacked in place, and finishing the construction.
In this embodiment, when the pipe rack 1 is twisted during the jacking process, the method further comprises a step a of rectifying the pipe rack 1 by using the jack 14 between the step five and the step six.
In the embodiment, certain gaps are formed between the pipe joints 1.1 and between the inner partition boards 1.2 in jacking construction, and the sealing construction of gaps is needed due to the sealing requirements of all the cabins in the pipe gallery 1, in the jacking process, a sealing plate 15 is firstly adopted to be placed in the gaps of the inner partition boards 1.2, and after the jacking construction is finished, the sealing of the gaps in the sixth step of caulking by polysulfide sealant is specifically carried out by firstly adopting the sealing plate 15 to be placed in the gaps of the inner partition boards 1.2 and then adopting the sealant 16 to be caulked.
In this embodiment, the caulking plate 15 is made of polyethylene foam, the sealant 16 is made of polysulfide sealant, impurities and greasy dirt in the seam must be cleaned up before caulking to be smooth, clean and dry, the sealant 16 is firstly scraped on two sides of the seam, the sealant 16 is scraped in the seam to a required height for the second time, and the sealant 16 is required to be compacted and scraped to be flat, so that the strength and the water tightness are prevented from being affected by air bubbles. The surface drying time of the sealant 16 is 24 hours, 80% strength is achieved after 7 days, and care is taken to protect the sealant 16 from rain intrusion before it is sufficiently cured.
Of course, in other embodiments, the seam between tube lane 1 and tube lane 1 may also be directly caulked with mortar.
In this embodiment, when the inner partition plate 1.2 and the pipe joint 1.1 are integrally prefabricated, the inner partition plate 1.2 is provided with the embedded steel pipes 13, which are used for penetrating through an internal antifriction grouting pipe system of a complete slurry sleeve in the jacking process, so that the arrangement of the grouting pipe system is convenient, the number of the embedded steel pipes 13 is usually 1-2 according to the arrangement condition of the antifriction grouting pipe system at the position of the inner partition plate 1.2, the size of the embedded steel pipes 13 is adjusted according to the size of the on-site grouting pipe 10, the position of the embedded steel pipes 13 is close to the inner wall of the pipe joint 1.1, the inner wall is in the same vertical section with the slurry injection port 12, the concrete position of the embedded steel pipes should ensure that the grouting pipe 10 is not broken, thixotropic slurry for the antifriction grouting pipe system can smoothly pass through the grouting pipe 10, the smooth jacking construction is ensured, and finally the embedded steel pipes 13 are filled with expansion cement mortar.
In this embodiment, due to the space requirement of each cabin of the pipe gallery 1, the inner partition board 1.2 is often not positioned in the middle of the pipe joint 1.1, so that the phenomenon that the pipe gallery 1 is twisted easily occurs in the jacking process due to unbalanced weight on the left side and the right side of the pipe joint 1.1, corresponding anti-twisting measures of the pipe joint 1.1 are adopted, and measures of adjusting the jacking force of the jacks 14 on the left side and the right side and timely reversing the cutterhead are adopted to perform torsion correction.
Claims (3)
1. A construction method of a construction system of a pipe gallery integrally prefabricated by pipe joints and inner partition plates is characterized in that the pipe gallery (1) comprises a pipe joint (1.1) and the inner partition plates (1.2), the pipe joint (1.1) and the inner partition plates (1.2) are integrally prefabricated, the pipe gallery is characterized in that the inner partition plates (1.2) are not arranged in the middle of the pipe joint (1.1), grouting holes (2) are formed in the side wall of the pipe joint (1.1) at intervals along the circumferential direction, the construction system comprises a soil outlet system, an antifriction grouting pipe system and a jacking system, the soil outlet system comprises a spiral soil outlet machine (3), a backing pump (5) and a pump pipe (6), the spiral soil outlet machine (3) is arranged in a tunnel (4) and used for outputting slag soil cut down in front of the pipe gallery (1), one end of the backing pump (5) is connected with the backing pump (5), the other end of the pump pipe (6) penetrates through the side wall of the pipe joint (1) and is arranged in a grouting pipe gallery (6) at intervals along the circumferential direction, the grouting pipe (6) is arranged between the grouting pipe joint (6) and a grouting pipe (8) and a grouting valve (11) in a grouting pipe (11) set at high pressure, the grouting pipe system comprises a grouting pipe (11) and a grouting pipe (11) is arranged in the grouting pipe pump (6) is arranged at the top (11) high pressure, the grouting device is arranged corresponding to grouting holes (2), grouting valves (11) are T-shaped and comprise transverse pipe sections (11.1) and longitudinal pipe sections (11.2), ports of the longitudinal pipe sections (11.2) of the grouting valves (11) are connected with the grouting holes (2), the number of grouting pipes (10) is two less than that of the grouting valves (11), the grouting pipes are correspondingly connected between the transverse pipe sections (11.1) of the adjacent grouting valves (11), ports at one ends of the two bottommost grouting valves (11) are reserved as slurry injection ports (12), and embedded steel pipes (13) are arranged on an inner partition plate (1.2) at positions corresponding to the positions where the grouting pipes (10) penetrate;
the cross section of the pipe joint (1.1) is rectangular, at least one inner partition plate (1.2) is arranged in the pipe joint (1.1) and divides the pipe joint (1.1) into at least two chambers, one end of the high-pressure water injection ring (9) is in threaded connection with the pump pipe (6), the other end of the high-pressure water injection ring (9) is in threaded connection with the backing pump (5), a group of jacks (14) are respectively arranged on two sides of the pipe gallery (1), and the jacks (14) are horizontally arranged between the tail end of the vertical plate of the pipe joint (1.1) and the side wall of the working well (7);
The construction method comprises the following steps:
Firstly, manufacturing a pipe gallery (1), namely integrally prefabricating an inner partition board (1.2) and a pipe joint (1.1) in a prefabrication field, wherein an embedded steel pipe (13) is embedded in the inner partition board (1.2);
Step two, completing the installation work of the supporting equipment in the push bench and the working well (7);
Arranging an antifriction grouting pipe system in the pipe gallery (1), namely correspondingly connecting grouting valves (11) with grouting holes (2), and connecting grouting pipes (10) between adjacent grouting valves (11), wherein no grouting pipe (10) is arranged between two grouting valves (11) at the bottommost part, and a port at one end of each grouting valve (11) is reserved as a slurry injection port (12);
step four, installing an unearthing system;
Step five, hanging a section of pipe gallery (1) into a working well (7), providing a jacking force for the pipe gallery (1) by a jack (14), tunneling by a pipe jacking machine, discharging soil by a spiral soil discharging machine (3), grouting around the pipe gallery (1) to be jacked by adopting an antifriction grouting pipe system, and jacking the pipe gallery (1);
Step six, adopting a supporting pump (5) and a pump pipe (6) to convey soil to the outside of the working well (7), and simultaneously adopting a high-pressure water injection ring (9) to inject high-pressure water into the pump pipe so as to reduce friction between the slag soil and the pipe wall of the pump pipe (6);
Step seven, in the jacking process, a gap between an inner partition plate (1.2) of the jacking pipe gallery (1) and the inner partition plate (1.2) of the pipe gallery (1) in front of the jacking pipe gallery is sealed by caulking, wherein a caulking plate (15) is firstly arranged in the gap of the inner partition plate (1.2), and then a sealing paste (16) is used for caulking;
And step eight, repeating the processes from the step five to the step seven until all the pipe galleries (1) are jacked in place, and finishing the construction.
2. The construction method of the construction system according to claim 1, wherein the distance between the adjacent grouting holes (2) is 1-3 m.
3. The construction method of the construction system according to claim 1, wherein when the pipe gallery (1) is twisted in the jacking process, the method further comprises a step a of rectifying the deviation of the pipe gallery (1) by adopting a jack (14) between the step five and the step six.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010283939.9A CN111287217B (en) | 2020-04-13 | 2020-04-13 | A construction system and method for a pipe gallery with integrally prefabricated pipe sections and inner partitions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010283939.9A CN111287217B (en) | 2020-04-13 | 2020-04-13 | A construction system and method for a pipe gallery with integrally prefabricated pipe sections and inner partitions |
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| Publication Number | Publication Date |
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| CN111287217A CN111287217A (en) | 2020-06-16 |
| CN111287217B true CN111287217B (en) | 2025-03-07 |
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|---|---|---|---|---|
| CN112761667B (en) * | 2021-01-28 | 2022-12-27 | 安徽唐兴装备科技股份有限公司 | Multi-section pipe joint installation device compatible with pipe jacking and half pipe joint shield |
| CN114837684A (en) * | 2022-05-06 | 2022-08-02 | 中建一局集团建设发展有限公司 | Pipe jacking propulsion system and construction method of movable cutter head |
| CN115370829A (en) * | 2022-08-19 | 2022-11-22 | 中铁四局集团第三建设有限公司 | Large-section rectangular jacking pipe construction method |
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| CN103556579A (en) * | 2013-11-14 | 2014-02-05 | 天津市水利工程有限公司 | Box culvert pushing construction method integrating comprehensive grouting, pressure maintaining and pipe roof support |
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| CN207847636U (en) * | 2018-01-25 | 2018-09-11 | 上海力行工程技术发展有限公司 | A kind of water filling device for pumping out soil series system |
| CN109630151A (en) * | 2018-11-07 | 2019-04-16 | 中衡设计集团工程咨询有限公司 | Rectangular top pipe tunneling construction method |
| CN212271002U (en) * | 2020-04-13 | 2021-01-01 | 中国建筑一局(集团)有限公司 | Pipe joint and inner partition plate integral prefabricated pipe gallery construction system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103556579A (en) * | 2013-11-14 | 2014-02-05 | 天津市水利工程有限公司 | Box culvert pushing construction method integrating comprehensive grouting, pressure maintaining and pipe roof support |
| CN104265321A (en) * | 2014-08-06 | 2015-01-07 | 上海隧道工程有限公司 | Ultra-large full-face rectangular pipe jacking tunneling construction method |
| CN207847636U (en) * | 2018-01-25 | 2018-09-11 | 上海力行工程技术发展有限公司 | A kind of water filling device for pumping out soil series system |
| CN109630151A (en) * | 2018-11-07 | 2019-04-16 | 中衡设计集团工程咨询有限公司 | Rectangular top pipe tunneling construction method |
| CN212271002U (en) * | 2020-04-13 | 2021-01-01 | 中国建筑一局(集团)有限公司 | Pipe joint and inner partition plate integral prefabricated pipe gallery construction system |
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| CN111287217A (en) | 2020-06-16 |
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