CN220203901U - Long-distance pipe curtain double-pipe jacking drag reduction device - Google Patents
Long-distance pipe curtain double-pipe jacking drag reduction device Download PDFInfo
- Publication number
- CN220203901U CN220203901U CN202321448203.8U CN202321448203U CN220203901U CN 220203901 U CN220203901 U CN 220203901U CN 202321448203 U CN202321448203 U CN 202321448203U CN 220203901 U CN220203901 U CN 220203901U
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- China
- Prior art keywords
- pipe
- curtain
- grouting
- steel
- jacking
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 64
- 239000010959 steel Substances 0.000 claims abstract description 64
- 239000002689 soil Substances 0.000 claims description 9
- 238000013016 damping Methods 0.000 claims description 7
- 238000007569 slipcasting Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 15
- 229910000278 bentonite Inorganic materials 0.000 description 8
- 239000000440 bentonite Substances 0.000 description 8
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 8
- 239000002002 slurry Substances 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000009974 thixotropic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Abstract
The utility model discloses a long-distance pipe curtain double-pipe jacking anti-drag device, which comprises a first steel pipe and a second steel pipe, wherein pipe heads are sleeved at the end parts of the first steel pipe and the second steel pipe, two groups of pipe curtain locks are arranged between the first steel pipe and the second steel pipe, the outlet ends of the pipe heads are oblique cuts, an anti-drag plate is arranged between the first steel pipe and the second steel pipe and positioned right in front of the pipe curtain locks, a first grouting pipe is arranged on the surface of the pipe curtain locks, the outlet of the first grouting pipe is arranged on the back side of the anti-drag plate, and the first grouting pipe is a flexible pipe, and the length of the first grouting pipe increases along with the length of the first steel pipe and the length of the second steel pipe. The device solves the problems of accurate jacking and deformation of the pipe curtain, and the first grouting pipe can be recycled.
Description
Technical Field
The utility model belongs to the technical field of underground construction, and relates to a long-distance pipe curtain double-pipe jacking drag reducer.
Background
The locking pipe curtain construction method is a non-open excavation construction method in the underground space utilization process, the locking pipe curtain is formed by connecting seamless steel pipes together through locking, and a closed or semi-closed pipe curtain structure which is longitudinally and transversely arched is formed outside an excavation line, so that disturbance to surrounding soil bodies in the excavation process is reduced, deformation of the surrounding soil bodies is correspondingly reduced, and the purposes of not affecting ground movement and maintaining normal use of an upper building and a pipeline in the excavation process are achieved.
In the jacking process of the double-row pipe curtains, the pipe jacking machine encounters larger resistance and is horizontally deformed at the outer side generated on the axis, so that the following problems are caused:
(1) The jacking of the pipe curtain is blocked, and the end of the steel pipe is deformed and the lock catch is damaged due to the insufficient rigidity of the pipe curtain;
(2) The pipe curtain jacking precision is insufficient, so that the pipe curtain is deviated and cannot reach a preset position, and the subsequent engineering construction is influenced;
those skilled in the art design a long-distance pipe curtain double-pipe jacking drag reducer to solve the problems set forth in the background art.
Disclosure of Invention
The utility model aims to provide a long-distance pipe curtain double-pipe jacking drag reducer, which solves the problems set forth in the background technology.
The technical scheme includes that the long-distance pipe curtain double-pipe jacking damping device comprises a first steel pipe and a second steel pipe, pipe heads are sleeved at the ends of the first steel pipe and the second steel pipe, two groups of pipe curtain locks are arranged between the first steel pipe and the second steel pipe, the outlet ends of the pipe heads are oblique cuts, a damping plate is arranged between the first steel pipe and the second steel pipe and is positioned right in front of the pipe curtain locks, a first grouting pipe is arranged on the surface of the pipe curtain locks, the outlet of the first grouting pipe is arranged on the back side of the damping plate, the first grouting pipe is a flexible pipe, and the length of the first grouting pipe is increased along with the length of the first steel pipe and the length of the second steel pipe.
The utility model is also characterized in that:
the number of the resistance reducing plates is two, the front ends of the two resistance reducing plates are connected, and a protection space is formed between the two resistance reducing plates.
The outlet end of the first grouting pipe extends into the protection space.
The surface of the pipe head is provided with a drag reduction port, and the drag reduction port enables soil to be removed from the drag reduction port in time in the jacking process of the pipe curtain.
The pipe curtain lock catch comprises a male buckle welded on the top pipe body of the first steel pipe and a female buckle welded on the top pipe body of the second steel pipe, the male buckle and the female buckle are spliced, and the first grouting pipe is longitudinally fixedly connected to the surface of the female buckle.
The surface of the second steel pipe is used for restraining the first grouting pipe through welded steel bars.
The first grouting pipe is connected with a communicating pipe in a threaded manner, the first grouting pipe is connected with the second grouting pipe through the communicating pipe, the surface of the second grouting pipe is provided with a plum blossom-shaped through hole, and the communicating pipe and the second grouting pipe are rigid pipe bodies.
The front end of the female buckle is fixedly connected with a bearing plate, the communicating pipe is welded on the outer wall of the second steel pipe, the second grouting pipe is arranged on the surface of the bearing plate, and the whole section of the second grouting pipe is positioned in the protection space.
The beneficial effects of the utility model are as follows:
1. in the jacking process of the pipe curtain, the first grouting pipe is filled with continuously pressurized bentonite, continuously ejected through the second grouting pipe, spread on the surface of the steel pipe, and after being wrapped by the bentonite, play a role in dynamically reducing jacking resistance
2. The pipe head designed by the utility model is provided with the drag reduction port, so that soil can be removed from the drag reduction port in time in the jacking process of the pipe curtain, and the deformation of the pipe head caused by larger resistance is solved.
3. The friction reducing plate is welded between the pipe heads, and has the functions of reducing resistance in the jacking process, protecting the lock catch, protecting the grouting pipe from being damaged and simultaneously protecting the grouting pipe from being vertical to the earth pressure.
4. The device solves the problems of accurate jacking and deformation of the pipe curtain, and the first grouting pipe can be recycled.
Drawings
FIG. 1 is a schematic diagram of a long-distance tube-curtain double-tube jacking drag reducer of the present utility model;
FIG. 2 is a front view of a long-distance tube-screen double-tube jacking fairing of the present utility model;
FIG. 3 is a rear view of a long-distance tube-screen double-tube jacking fairing of the present utility model.
In the figure, 1, a first steel pipe, 2, a second steel pipe, 3, a pipe head, 4, a drag reduction port, 5, a drag reduction plate, 6, a first grouting pipe, 7, a male buckle, 8, a female buckle, 9, welding steel bars, 10, a communicating pipe, 11 and a second grouting pipe.
Detailed Description
The utility model will be described in detail below with reference to the drawings and the detailed description.
The utility model relates to a long-distance pipe curtain double-pipe jacking damping device, which is shown in figures 1, 2 and 3, and comprises a first steel pipe 1 and a second steel pipe 2, wherein pipe heads 3 are sleeved at the end parts of the first steel pipe 1 and the second steel pipe 2, two groups of pipe curtain buckles are arranged between the first steel pipe 1 and the second steel pipe 2, the outlet end of the pipe head 3 is an oblique notch, a resistance reducing plate 5 is arranged between the first steel pipe 1 and the second steel pipe 2, the resistance reducing plate 5 is positioned right in front of the pipe curtain buckles, a first grouting pipe 6 is arranged on the surface of the pipe curtain buckles, the outlet of the first grouting pipe 6 is arranged on the back side of the resistance reducing plate 5, and the first grouting pipe 6 is a flexible pipe, and the length of the flexible pipe increases with the length of the first steel pipe 1 and the second steel pipe 2.
Under the general condition, the definition of pipe curtain long distance is greater than 7 meters, and flexible pipe is selected for use to first slip casting pipe, and its with low costs is convenient for retrieve, if unable recovery or retrieve in-process damage after exceeding 7 meters, its loss cost is reasonable, can not cause huge loss to whole project.
The two friction reducing plates 5 are connected at the front ends of the two friction reducing plates 5, a protection space is formed between the two friction reducing plates 5, the outlet end of the first grouting pipe 6 extends into the protection space, the first grouting pipe 6 is connected with a communicating pipe 10 in a threaded mode, the first grouting pipe 6 is connected with a second grouting pipe 11 through the communicating pipe 10, the whole section of the second grouting pipe 11 is located in the protection space, a plum blossom-shaped through hole is formed in the surface of the second grouting pipe 11, and the communicating pipe 10 and the second grouting pipe 11 are rigid pipe bodies.
In the pipe curtain jacking process, the first grouting pipe 1 is filled with continuously pressurized bentonite, the second grouting pipe is continuously ejected through the through hole of the grouting pipe 12 and is diffused to the surfaces of the two steel pipes, and after the surfaces of the two steel pipes are wrapped by the bentonite, the jacking resistance is dynamically reduced.
The pipe curtain lock catch comprises a male buckle 7 welded on the pipe body at the top of the first steel pipe 1 and a female buckle 8 welded on the pipe body at the top of the second steel pipe 2, the male buckle 7 and the female buckle 8 are connected in an inserting mode, and the first grouting pipe 6 is fixedly connected on the surface of the female buckle 8 in the longitudinal direction.
The front end of the female buckle 8 is fixedly connected with a bearing plate, the communicating pipe 10 is welded on the outer wall of the second steel pipe 2, the second grouting pipe 11 is arranged on the surface of the bearing plate,
the surface of tube head 3 has seted up drag reduction mouth 4, and drag reduction mouth 4 makes in the pipe curtain jacking, and soil can in time get rid of from the drag reduction mouth.
The surface of the second steel pipe 2 is restrained to the first grouting pipe 6 by welding steel bars 9.
The utility model relates to a long-distance pipe curtain double-pipe jacking damping device, which comprises the following working processes: the following specific working principle is supplemented, and the process of dynamically reducing the jacking resistance can be performed under the analysis of mechanical angles.
In the jacking process of the pipe curtain, the bentonite slurry which is continuously pressurized is injected into the rear end of the grouting pipe, continuously ejected through the opening of the front end of the grouting pipe, spread on the surfaces of the steel pipe and the locking notch, and the front end pipe head of the continuous grouting pipe is always wrapped by the bentonite, so that the jacking resistance is dynamically reduced.
Bentonite (clay mineral, the main component of which is montmorillonite) with good performance is selected, thixotropic slurry with good shearing dilution performance and enough gel strength can be formed by combining the bentonite with water, a complete slurry sleeve is formed on the periphery of a pipeline, the friction coefficient between the outer wall of a pipe joint and a soil layer is effectively reduced by virtue of the thixotropic performance of the slurry, and meanwhile, dry friction between a jacking pipeline and a soil body can be converted into liquid friction by slurry, so that jacking friction is reduced.
Meanwhile, the drag reduction port is formed in the pipe head, so that soil can be removed from the drag reduction port in time in jacking of the pipe curtain, and deformation of the pipe head caused by high resistance is avoided. In addition, the friction reducing plate is of a bevel connection design, and has the functions of reducing resistance in the jacking process, protecting the lock catch, protecting the grouting pipe from being damaged and simultaneously protecting the grouting pipe from being vertical to the earth pressure.
The utility model relates to a long-distance pipe curtain double-pipe jacking resistance reducing device, which has the advantages that: the method solves the problems of accurate jacking and deformation of the pipe curtain, the first grouting pipe can be recycled, and the device is simple in operation, firm, reliable, convenient to construct and low in cost.
Claims (8)
1. The utility model provides a double-barrelled jacking damping device of long distance pipe curtain, its characterized in that, including first steel pipe (1) and second steel pipe (2), pipe head (3) have all been cup jointed to first steel pipe (1) and second steel pipe (2) tip, are provided with two sets of pipe curtain hasp between first steel pipe (1) and second steel pipe (2), and the exit end of pipe head (3) is the oblique incision, be provided with friction reducing plate (5) between first steel pipe (1) and second steel pipe (2), friction reducing plate (5) are located the pipe curtain hasp in the place ahead, and the surface of pipe curtain hasp is provided with first slip casting pipe (6), the export setting of first slip casting pipe (6) is at the dorsal part of friction reducing plate (5), first slip casting pipe (6) are flexible pipe, and its length increases along with first steel pipe (1) and second steel pipe (2) length.
2. The long-distance pipe curtain double-pipe jacking resistance reducing device according to claim 1, wherein two resistance reducing plates (5) are arranged, the front ends of the two resistance reducing plates (5) are connected, and a protection space is formed between the two resistance reducing plates (5).
3. The long-distance pipe curtain double-pipe jacking resistance reducing device according to claim 2, wherein the outlet end of the first grouting pipe (6) extends into the interior of the protection space.
4. The long-distance pipe curtain double-pipe jacking resistance reducing device according to claim 1, wherein the surface of the pipe head (3) is provided with a resistance reducing opening (4), and the resistance reducing opening (4) enables soil to be timely discharged from the resistance reducing opening during pipe curtain jacking.
5. The long-distance pipe curtain double-pipe jacking damping device according to claim 1, wherein the pipe curtain lock catch comprises a male buckle (7) welded on the top pipe body of the first steel pipe (1) and a female buckle (8) welded on the top pipe body of the second steel pipe (2), the male buckle (7) and the female buckle (8) are connected in an inserting mode, and the first grouting pipe (6) is fixedly connected on the surface of the female buckle (8) longitudinally.
6. The long-distance pipe curtain double-pipe jacking resistance reducing device according to claim 5, wherein the surface of the second steel pipe (2) is restrained with the first grouting pipe (6) through welding steel bars (9).
7. The long-distance pipe curtain double-pipe jacking resistance reducing device according to claim 3, wherein the first grouting pipe (6) is in threaded connection with a communicating pipe (10), the first grouting pipe (6) is connected with a second grouting pipe (11) through the communicating pipe (10), a plum blossom-shaped through hole is formed in the surface of the second grouting pipe (11), and the communicating pipe (10) and the second grouting pipe (11) are rigid pipe bodies.
8. The long-distance pipe curtain double-pipe jacking resistance reducing device according to claim 5, wherein a supporting plate is fixedly connected to the front end of the female buckle (8), the communicating pipe (10) is welded to the outer wall of the second steel pipe (2), the second grouting pipe (11) is arranged on the surface of the supporting plate, and the whole section of the second grouting pipe (11) is located in the protection space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321448203.8U CN220203901U (en) | 2023-06-08 | 2023-06-08 | Long-distance pipe curtain double-pipe jacking drag reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321448203.8U CN220203901U (en) | 2023-06-08 | 2023-06-08 | Long-distance pipe curtain double-pipe jacking drag reduction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220203901U true CN220203901U (en) | 2023-12-19 |
Family
ID=89153328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321448203.8U Active CN220203901U (en) | 2023-06-08 | 2023-06-08 | Long-distance pipe curtain double-pipe jacking drag reduction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220203901U (en) |
-
2023
- 2023-06-08 CN CN202321448203.8U patent/CN220203901U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |