CN111188361A - Finished product pipe abutting structure of underground pipeline engineering - Google Patents
Finished product pipe abutting structure of underground pipeline engineering Download PDFInfo
- Publication number
- CN111188361A CN111188361A CN201911289226.7A CN201911289226A CN111188361A CN 111188361 A CN111188361 A CN 111188361A CN 201911289226 A CN201911289226 A CN 201911289226A CN 111188361 A CN111188361 A CN 111188361A
- Authority
- CN
- China
- Prior art keywords
- pipe
- finished
- underground
- adjacent
- finished product
- 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
Images
Classifications
-
- 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
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- 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
- E02D29/16—Arrangement or construction of joints in foundation structures
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Sewage (AREA)
Abstract
The invention provides an abutting structure of finished pipes of an underground pipeline engineering, which comprises a plurality of finished pipes which are gradually pushed into an underground soil body, wherein the abutting positions of two adjacent finished pipes form a pipe seam, the abutting positions of two adjacent finished pipes are also connected into a whole through a consolidation body filled between the outer wall of the finished pipe and the underground soil body, and the consolidation body is formed by pouring concrete into the pipe seam and then condensing. By adopting the technical scheme of the invention, the concrete is filled in the pipe joints at the adjacent positions of the two adjacent finished pipes to be condensed to form the consolidation body, so that the capability of the corresponding finished pipes for resisting the temperature change of the underground environment is increased, the consolidation body enables the two adjacent finished pipes to be connected into a whole, the strength and the bearing capacity of the adjacent positions of the two adjacent finished pipes are increased, the pressure from the underground can be effectively resisted, the stability of the adjacent positions of the underground pipelines at the adjacent positions of the finished pipes is maintained, and the safe, reliable and stable operation of the underground pipelines is ensured.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to an abutting structure of finished pipes of an underground pipeline engineering.
Background
When laying underground pipelines, the finished product pipe construction method is the preferred construction method, because the construction method has the highest possibility and the best possibility of removing obstacles, in the prior art, the finished product pipe construction method mostly adopts a one-way jacking construction method, when the construction method is adopted for construction, the underground pipelines are formed by sequentially adjoining a plurality of finished product pipes, along with the development of the society, the construction requirements of people on the underground pipelines are higher and higher, the laying distance of the underground pipelines is longer and longer, the surrounding environment at the laying position of the underground pipelines is more and more complex, the laid underground pipelines bear huge pressure from the inside of an underground soil body, in order to ensure the safety of underground pipeline facilities, the adjoining position of two adjacent finished product pipes, namely the weakest link in the underground pipelines, therefore, a reasonable construction process is adopted, the structure of adjoining positions of two adjacent finished product pipes is reasonably arranged, the foundation for guaranteeing the long-term stable and reliable use of the underground pipeline is provided.
Disclosure of Invention
In order to solve the technical problem, the invention provides an abutting structure of finished pipes of an underground pipeline engineering.
The invention is realized by the following technical scheme.
The invention provides an abutting structure of finished product pipes of underground pipeline engineering, which comprises a plurality of finished product pipes which are gradually pushed into an underground soil body, wherein the abutting positions of two adjacent finished product pipes form a pipe seam, the abutting positions of two adjacent finished product pipes are also connected into a whole through a consolidation body filled between the outer wall of each finished product pipe and the underground soil body, and the consolidation body is formed by concreting after the concrete is poured into the pipe seam.
The finished pipe is in a cylindrical shape formed by pouring concrete.
The width of the pipe seam is 10-15 mm.
The projection length of the consolidation body on the axial section of the finished product pipe is not less than 5 m.
The thickness of the consolidated body relative to the outer wall surface of the finished tube is not less than 1.5 m.
The concrete pouring device comprises a gas storage tank, a feeding hopper and a plurality of air compressors, the air compressors are connected to the input end of the gas storage tank in parallel, the output end of the gas storage tank is connected into the feeding hopper through a gas supply pipeline, the feeding hopper is further connected with a feeding pipe, and the feeding pipe stretches into the finished product pipes and is aligned to the adjacent positions of the two adjacent finished product pipes.
The number of the air compressors is 3.
The output pressure of the air compressor is 0.3 MPa.
The invention has the beneficial effects that: by adopting the technical scheme of the invention, the pipe joints are reserved at the adjacent positions of two adjacent finished pipes, so that when the corresponding finished pipes face the change of the temperature of the underground environment and expand when heated or contract when cooled, the adjacent positions of the two adjacent finished pipes have corresponding stretching and contracting spaces, the safe and stable operation of the underground pipeline is ensured, the service life of the underground pipeline is effectively prolonged, in addition, the two adjacent finished pipes are connected into a whole by filling concrete into the pipe joints at the adjacent positions of the two adjacent finished pipes, the strength and the bearing capacity of the adjacent positions of the two adjacent finished pipes are increased, the pressure from the underground can be effectively resisted, meanwhile, the stability of the adjacent positions of the adjacent finished pipes of the underground pipeline can be maintained, the adjacent soil body is prevented from collapsing or settling, and the safe, reliable and stable operation of the underground pipeline is ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a flow chart of the underground pipeline laying construction process of the present invention;
FIG. 3 is a schematic view of the butt-joint and the closure of the finished pipe of the present invention;
FIG. 4 is a schematic structural view of the concrete pouring apparatus of the present invention;
FIG. 5 is a schematic diagram of the calibration system of the present invention.
In the figure: 1-finished pipe, 2-guide ring, 3-air compressor, 4-air storage tank, 5-feeding hopper, 6-marker rod, 7-theodolite, 8-target, 9-laser emitter, 10-working well, 12-consolidation body and 13-underground soil body.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in figure 1, the invention provides an abutting structure of finished product pipes of underground pipeline engineering, which comprises a plurality of finished product pipes 1 which are sequentially pushed into an underground soil body 13, wherein the abutting positions of two adjacent finished product pipes 1 form pipe seams, the abutting positions of two adjacent finished product pipes 1 are also connected into a whole through a consolidation body 12 which is filled between the outer wall of the finished product pipe 1 and the underground soil body 13, and the consolidation body 12 is formed by pouring concrete into the pipe seams and then condensing.
Further, the finished pipe 1 is in a cylindrical shape cast with concrete. The finished tube 1 is prepared in advance in a prefabrication mode. The width of the pipe seam is 10-15 mm.
In addition, the length of the projection of the solidification body 12 on the axial section of the finished tube 1 is not less than 5 m. The thickness of the consolidated body 12 with respect to the outer wall surface of the finished tube 1 is not less than 1.5 m.
Further, concretion body 12 is formed by concreting after using concrete placement device to the tube seam internal concreting, and concrete placement device includes gas holder 4, magazine 5 and a plurality of air compressor machine 3, and a plurality of air compressor machine 3 parallel connection are in gas holder 4 input, and 4 output of gas holder insert magazine 5 through the gas supply line in, magazine 5 still is connected with the conveying pipe, and the conveying pipe stretches into within finished product pipe 1 and aim at two adjacent finished product pipe 1 and adjoin the department. Preferably, the number of the air compressors 3 is 3. The output pressure of the air compressor 3 is 0.3 MPa.
By adopting the technical scheme of the invention, the pipe joints are reserved at the adjacent positions of two adjacent finished pipes, so that when the corresponding finished pipes face the change of the temperature of the underground environment and expand when heated or contract when cooled, the adjacent positions of the two adjacent finished pipes have corresponding stretching and contracting spaces, the safe and stable operation of the underground pipeline is ensured, the service life of the underground pipeline is effectively prolonged, in addition, the two adjacent finished pipes are connected into a whole by filling concrete into the pipe joints at the adjacent positions of the two adjacent finished pipes, the strength and the bearing capacity of the adjacent positions of the two adjacent finished pipes are increased, the pressure from the underground can be effectively resisted, meanwhile, the stability of the adjacent positions of the adjacent finished pipes of the underground pipeline can be maintained, the adjacent soil body is prevented from collapsing or settling, and the safe, reliable and stable operation of the underground pipeline is ensured.
As shown in fig. 2, 3, 4 and 5, the concrete is poured from bottom to top, and the concrete is poured next time after the concrete is poured until the concrete setting strength reaches the initial setting state, which is 70% or more of the strength when the concrete setting strength reaches the preset full setting state. The preferable mode of casting by stages and sections is to cast concrete by three times and three sections correspondingly, and the ratio of the coverage area of the three sections of cast concrete is 2:1: 2. By adopting the technical scheme of the invention, as the mode of casting the concrete section by section in a grading way is adopted, the cast concrete can be smoothly and gradually solidified to the required strength grade in the underground humid environment, shrinkage cracks are avoided in the solidification process, and the construction quality is improved.
As shown in fig. 2, 3, 4 and 5, when laying an underground pipeline and constructing to form the adjacent structure of the finished pipes of the underground pipeline engineering provided by the present invention, the following construction process can be adopted:
the method comprises the following steps: excavating earth on the ground to form two working wells 10;
step two: providing two tool pipes and a plurality of jacks, selecting one position with the same depth on the inner wall of one side of the two working wells 10 in the step one as an initial point, respectively installing a plurality of jacks around the initial point, and respectively lowering the two tool pipes into the working wells 10 to enable the central axes of the tool pipes to be coincident with the initial point; further, the number of jacks installed in the working well 10 is even. A plurality of jacks installed within the working well 10 are uniformly deployed in a circumferential array centered on an initiation point. And a cushion block is also arranged between the jack and the joint of the inner wall of the working well 10, and the cushion block is made of iron.
Step three: one end of the tool pipe is fixedly connected with the steel guide ring 2, the other end of the tool pipe is applied with propelling force through the jack installed in the second step, so that the steel guide ring 2 fixedly connected with one end of the two tool pipes is oppositely propelled to the inside of the underground soil 13, and then the soil inside the steel guide ring 2 fixedly connected with one end of the tool pipe is excavated and moved out; the tail end of the piston rod of the jack is sleeved with a buffer gasket.
Step four: providing two finished product pipes 1, and respectively lowering the two finished product pipes 1 into a working well 10 to ensure that the central axis of the finished product pipe 1 is coincided with an initial point;
step five: applying a propelling force to the finished product pipes 1 through a jack, enabling the two finished product pipes 1 and the tool pipe to simultaneously and oppositely propel to the underground soil body 13, and then excavating and moving out the underground soil body 13 in the finished product pipes 1; further, when the finished pipe 1 or the tool pipe is pushed by the jack in the third step or the fifth step, the depth of the finished pipe 1 or the tool pipe is 1.5 to 1.7m per pushing.
Step six: and repeating the fourth step to the fifth step until the guide ring 2 in the second step is in butt joint contact with the underground soil body 13.
In addition, the construction method further comprises the following steps:
after installing a plurality of jacks around the initial point in the second step, digging an underground soil body 13 on the inner wall of the working well 10 on the other side opposite to the initial point to form a guide hole, and when the third step or the fifth step is performed, when the product pipe 1 or the tool pipe is pushed by the jacks, enabling the product pipe 1 or the tool pipe to pass through the guide hole. Preferably, the depth of the guide hole is 20-30 cm.
Further, the construction method further comprises the following steps:
after the sixth step is completed, a steel plate is welded at the butt-joint contact part of the guide ring 2, so that the two guide rings 2 are connected into a whole through the steel plate. The steel plate thickness is preferably 10 mm.
Before the sixth step, a concrete pouring device is deployed outside the working well 10, after the sixth step is completed, concrete is poured through the concrete pouring device, so that the concrete enters between the outer wall of the finished product pipe 1 and the underground soil body 13 through the pipe seam between the two adjacent finished product pipes and is solidified to form a solidified body 12, and the solidified body 12 connects the two adjacent finished product pipes 1 into a whole.
In addition, as shown in fig. 5, the construction method further includes the steps of:
after the second step or the fourth step is completed, a mark post 6 is erected at the middle point of the connecting line of the two working wells 10, theodolites 7 and targets 8 are respectively arranged on the opposite side edges of the well mouths of the working wells 10, the connecting line between the theodolites 7 and the targets 8 is collinear with the connecting line between the working wells 10 and the working wells 10, then a laser emitter 9 is installed at the initial point, a laser beam emitted by the laser emitter 9 along the horizontal direction and the connecting line between the theodolites 7 and the targets 8 are within the same vertical plane, the propelling direction of the finished product pipe 1 or the tool pipe is adjusted by adjusting the installation posture of a jack, and when the distance between the laser beam emitted by the laser emitter 9 and the central axis of the finished product pipe 1 is smaller than 15mm, the next step is carried out.
After the construction method is adopted, the finished pipe 1 can be jacked into the underground soil body of the ground for a longer distance by adopting a construction mode of jacking the finished pipe in opposite directions, under the condition of the same propelling force, the conical groove of the guide ring is utilized, the requirement of laying construction of a long-distance underground pipeline is met, the steel guide ring is fixedly connected to the first section of tool pipe in the construction process, the finished pipe can be more stably propelled into the underground soil body under the guide of the guide ring, so that the finished pipe can be smoothly propelled into the underground soil body along a preset track and various obstacles in the underground soil body are removed, the propelling force can be uniformly acted on the finished pipe or the tool pipe by uniformly arranging the jacks around the initial point, the finished pipe is favorably and always propelled into the underground soil body along a straight line, the construction quality is improved, in addition, the invention also adopts a special concrete pouring device to pour concrete at the joint of the adjacent finished pipes in a sectional pouring mode, so that the two adjacent finished pipes are connected into a whole, the concrete is poured section by section successively, the concrete can be solidified to a required strength grade successively in a damp environment in the underground soil body, shrinkage cracks are avoided in the solidification process, the construction quality is improved, in addition, the advancing direction of the finished pipes is calibrated before the finished pipes are advanced by adopting a calibration system consisting of a marker post, a theodolite, a target and a laser emitter, so that the finished pipes can be always advanced to the underground soil body along a preset straight line direction, and the problems of large advancing direction error and low butt joint closure precision in a bidirectional jacking construction mode are solved.
Claims (8)
1. The utility model provides an underground pipeline engineering finished product pipe adjoins structure which characterized in that: the method comprises a plurality of finished product pipes (1) which are gradually pushed into an underground soil body (13), wherein the adjacent positions of two adjacent finished product pipes (1) form a pipe seam, the adjacent positions of two adjacent finished product pipes (1) are also connected into a whole through a solidification body (12) filled between the outer wall of each finished product pipe (1) and the underground soil body (13), and the solidification body (12) is formed by concreting after concrete is poured into the pipe seam.
2. The underground utility work finished pipe abutting structure according to claim 1, wherein: the finished pipe (1) is in a cylindrical shape formed by pouring concrete.
3. The underground utility work finished pipe abutting structure according to claim 1, wherein: the width of the pipe seam is 10-15 mm.
4. The underground utility work finished pipe abutting structure according to claim 1, wherein: the projection length of the consolidation body (12) on the axial section of the finished tube (1) is not less than 5 m.
5. The underground utility work finished pipe abutting structure according to claim 1, wherein: the thickness of the consolidation body (12) relative to the outer wall surface of the finished tube (1) is not less than 1.5 m.
6. The underground utility work finished pipe abutting structure according to claim 1, wherein: the concrete concreting device is used for concreting the concrete in the pipe joint and then concreting the concrete to form the concreting body (12), the concrete concreting device comprises an air storage tank (4), a feeding hopper (5) and a plurality of air compressors (3), the air compressors (3) are connected to the input end of the air storage tank (4) in parallel, the output end of the air storage tank (4) is connected into the feeding hopper (5) through an air supply pipeline, the feeding hopper (5) is further connected with a feeding pipe, and the feeding pipe stretches into the finished product pipes (1) and aligns to the adjacent joint of the two finished product pipes (1).
7. The underground utility work finished pipe abutting structure according to claim 6, wherein: the number of the air compressors (3) is 3.
8. The underground utility work finished pipe abutting structure according to claim 6, wherein: the output pressure of the air compressor (3) is 0.3 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911289226.7A CN111188361A (en) | 2019-12-12 | 2019-12-12 | Finished product pipe abutting structure of underground pipeline engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911289226.7A CN111188361A (en) | 2019-12-12 | 2019-12-12 | Finished product pipe abutting structure of underground pipeline engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111188361A true CN111188361A (en) | 2020-05-22 |
Family
ID=70705815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911289226.7A Pending CN111188361A (en) | 2019-12-12 | 2019-12-12 | Finished product pipe abutting structure of underground pipeline engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111188361A (en) |
-
2019
- 2019-12-12 CN CN201911289226.7A patent/CN111188361A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106369223B (en) | A kind of silt stratum pipe jacking construction method | |
| CN100529329C (en) | Socket shield machine construction method | |
| CN110924961B (en) | Construction method for starting shield tunneling machine to pass through existing station | |
| CN111609212B (en) | Reverse jacking steel pipe sleeve trimming offset jacking pipe construction method | |
| CN105256812B (en) | Foundation ditch prefabricated assembled concrete supporting construction and its construction method | |
| CN112576812B (en) | Large-diameter long-distance linear jacking pipe jacking method | |
| CN106930321A (en) | Underground structure novel construction method is built in a kind of pipe-jacking with large diameter combination hole stake | |
| WO2020259059A1 (en) | Tbm parallel heading tunnel trunk construction method | |
| CN113513322A (en) | Soil pressure balance jacking construction method for water-rich shallow-buried large-section rectangular jacking pipe | |
| CN112855225B (en) | Soft rock tunnel supporting construction method with high safety | |
| CN103643673A (en) | Self-advancing recyclable steel pipe pile and construction method | |
| CN211395752U (en) | Finished product pipe abutting structure of underground pipeline engineering | |
| CN104863152A (en) | High-strength bare rock pipe pile inserting-driving method | |
| CN211599721U (en) | Pipe jacking direction calibration system for underground pipeline laying engineering | |
| CN111188361A (en) | Finished product pipe abutting structure of underground pipeline engineering | |
| CN110925489A (en) | Opposite jacking and butt joint construction method for finished pipes | |
| CN114278319B (en) | Shield construction method for small-clear-distance tunnel | |
| CN111022068A (en) | Construction method for enabling pipe-jacking tunnel to penetrate existing building downwards and construction working face of construction method | |
| CN216588595U (en) | Rectangular multi-tunnel reinforcing and monitoring system | |
| CN113685198A (en) | Pipe jacking construction device and construction process | |
| CN110985017B (en) | Construction method for shield tunneling of rainwater box culvert under expansive soil stratum | |
| CN114508629A (en) | Pipe jacking construction method for penetrating through mixed egg gravel layer and sandstone layer | |
| CN208039234U (en) | A kind of engineering pile in solution cavity geology | |
| CN207633149U (en) | A kind of auxiliary system of underpass construction | |
| CN111271080A (en) | Pipe shed construction method for soft surrounding rock section of tunnel portal |
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 |