CN112095748A - Rapid construction method for non-stop butt joint of newly-built sewage pipeline and operation pipeline - Google Patents
Rapid construction method for non-stop butt joint of newly-built sewage pipeline and operation pipeline Download PDFInfo
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- CN112095748A CN112095748A CN202010916997.0A CN202010916997A CN112095748A CN 112095748 A CN112095748 A CN 112095748A CN 202010916997 A CN202010916997 A CN 202010916997A CN 112095748 A CN112095748 A CN 112095748A
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- pipeline
- open caisson
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/16—Jointing caissons to the foundation soil, specially to uneven foundation soil
Abstract
The invention relates to the relevant field of municipal engineering pipeline construction, in particular to a quick construction method for non-stop touch joint of a newly-built sewage pipeline and an operating pipeline, which comprises the following steps: excavating a working pit and processing a side slope; prefabricating the open caisson; positioning the open caisson; sinking the open caisson; pouring the bottom of the open caisson and performing anti-seepage treatment; the newly-built pipeline is installed on the open caisson; and cutting the pipeline running in the open caisson and backfilling earthwork to restore the ground. According to the method, the problem of how to quickly touch and connect the newly-built pipeline and the operated pipeline under the condition of not stopping water is solved, the touch and connection work can be effectively ensured to be quickly completed on schedule, the construction cost is reduced in the construction process, the influence on surrounding production and life is reduced, and the potential safety hazard of cracking and water leakage of the operated pipeline is eliminated; in addition, the method has the advantages of high construction speed, capability of ensuring the construction period of the butting connection, safety guarantee, good economic effect and small influence.
Description
Technical Field
The invention relates to the field related to municipal engineering pipeline construction, in particular to a quick construction method for non-stop touch connection of a newly-built sewage pipeline and an operating pipeline.
Background
In the construction of a newly-built sewage pipeline, the collision connection of a newly-built small pipeline and a large pipeline in operation is a common condition in the pipeline construction process, the operated pipeline is in a water-flowing state at the moment, if the two pipelines can be quickly collided, the construction cost can be reduced, the adverse effects on surrounding production and life are reduced, and the potential safety hazard in the construction process can also be reduced.
The existing touch joint construction method has two kinds, the first method is to stop the water supply of the existing pipeline and carry out touch joint construction, the water supply of the running large pipeline is required to be stopped in the method to influence the surrounding production and life, and the local water cut-off in the large pipeline is difficult to realize if an overrunning mode is adopted; the second method is the frogman underwater breaking operation, in a large pipeline, due to the fact that the pipeline water volume and flow velocity are large, visibility is low and the like, the frogman underwater operation difficulty is large, safety risk is high, construction uncertainty is increased, and construction period cannot be guaranteed invisibly.
Therefore, a quick construction method for non-stop water collision connection of the newly-built sewage pipeline and the running pipeline is provided.
Disclosure of Invention
The invention aims to provide a quick construction method for non-stop water touch joint of a newly-built sewage pipeline and an operating pipeline, which aims to solve the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a quick construction method for non-stop touch joint of a newly-built sewage pipeline and an operation pipeline comprises the following steps:
s1, excavating a working pit and processing a side slope;
s2, prefabricating the open caisson according to a construction drawing, and reserving an inverted U-shaped groove and a reserved opening of a new pipeline on the side wall of the bottom of the prefabricated open caisson;
s3, positioning the open caisson, and temporarily plugging the reserved port of the new pipeline;
s4, sinking the open caisson to a required position;
s5, carrying out bottom sealing treatment on the bottom of the working pit, and pouring construction joints at the bottom of the open caisson and the top of the bottom seal by using impervious concrete after the concrete for bottom sealing treatment is solidified;
s6, plugging a gap between the inverted U-shaped clamping groove and a contact part of a running pipeline;
s7, performing seal breaking treatment on the reserved opening of the new pipeline, and completing installation and plugging treatment of the newly-built pipeline;
s8, waiting for the time when the water quantity in the running pipeline is small, adopting a proper water reducing measure, installing a lifting point at the top of the running pipeline positioned in the open caisson, and utilizing frogman to carry out breaking operation on the running pipeline;
s9, lifting the broken pipeline out of the open caisson;
and S10, backfilling earthwork and recovering the ground.
Preferably, the bottom of the edge angle of the caisson is reinforced after the caisson is prefabricated, and the reinforcing treatment of the bottom of the edge angle of the caisson is performed by double-fluid grouting.
Preferably, the open caisson prefabrication procedure can be performed in the process of working pit excavation and slope treatment.
Preferably, the top of the open caisson is prefabricated with an inspection well.
Preferably, the inspection shaft is a masonry inspection shaft, the top of the inspection shaft is flush with the ground, and the top of the inspection shaft is provided with a concrete well ring and a well cover.
Preferably, during the process of digging the working pit, a crane and a sling are used for carrying out vertical hoisting stabilization on the pipeline dug by the working pit in operation.
Preferably, the sinking position of the open caisson needs to ensure that the pipeline in operation is positioned in the inverted U-shaped groove.
Preferably, the concrete used for the back cover in S5 is quick-setting concrete.
Preferably, the broken pipeline is lifted out of the open caisson in S9 by means of a crane and a sling.
Preferably, when the running pipeline is cut, the number of the hoisting points at the top of the running pipeline is not less than two.
Preferably, the top of the open caisson is surrounded by a rammed bed of coarse sand.
Preferably, the pipe in operation and the open caisson are subjected to roughening treatment.
Compared with the prior art, the invention has the beneficial effects that:
according to the method, the problem of how to quickly touch and connect the newly-built pipeline and the operated pipeline under the condition of not stopping water is solved, the touch and connection work can be effectively ensured to be quickly completed on schedule, the construction cost is reduced in the construction process, the influence on surrounding production and life is reduced, and the potential safety hazard of cracking and water leakage of the operated pipeline is eliminated; in addition, the method has the advantages of high construction speed, capability of ensuring the construction period of the butting connection, safety guarantee, good economic effect and small influence.
Drawings
FIG. 1 is a plan layout view of an inspection well in a rapid construction method for non-stop butting of a newly-built sewage pipeline and an operating pipeline, which is provided by the invention;
FIG. 2 is a cross-sectional view of inspection well operation in the fast construction method of non-stop water collision of the newly-built sewage pipeline and the operation pipeline.
1. An in-service pipeline; 2. quick-setting concrete; 3. sinking a well; 4. a new pipeline reserved port; 5. a medium coarse sand ramming layer; 6. an inspection well; 7. a well cover is provided.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, the invention also provides a quick construction method for non-stop touch joint of a newly-built sewage pipeline and an operating pipeline, which comprises the following steps:
s1, excavating a working pit and processing a side slope;
s2, prefabricating the open caisson 3 according to a construction drawing, and reserving an inverted U-shaped groove and a new pipeline reserved opening 4 on the side wall of the bottom of the prefabricated open caisson 3;
s3, positioning the open caisson 3, and temporarily plugging the reserved port 4 of the new pipeline;
s4, sinking the open caisson 3 to a required position;
s5, carrying out bottom sealing treatment on the bottom of the working pit, and pouring construction joints at the bottom of the open caisson 3 and the top of the bottom seal by using impervious concrete after the concrete subjected to the bottom sealing treatment is solidified;
s6, plugging a gap between the inverted U-shaped clamping groove and a contact part of the running pipeline 1;
s7, performing seal breaking treatment on the reserved opening 4 of the new pipeline, and completing installation and plugging treatment of the newly-built pipeline;
s8, waiting for the time when the water quantity in the pipeline 1 is small, adopting proper water reducing measures, installing a lifting point at the top of the pipeline 1 which is positioned in the caisson 3 and is in operation, and utilizing frogman to carry out breaking operation on the pipeline 1 which is in operation;
s9, lifting the broken pipeline out of the open caisson 3;
and S10, backfilling earthwork and recovering the ground.
The purpose of temporarily plugging the new pipeline reserved opening 4 is to prevent the inside of the pipeline reserved opening 4 from being blocked by concrete and influencing the use of the new pipeline reserved opening 4.
Wherein, the inverted U-shaped clamping groove is used for sleeving the open caisson 3 above the pipeline 1 in operation.
In S6, the pouring of the impervious concrete on the construction joint between the bottom of the open caisson 3 and the top of the bottom cover is to prevent the water in the running pipeline 1 from seeping out of the open caisson 3 and causing leakage.
And in the step S8, the sealing of the reserved opening 4 of the new pipeline is broken, the installation and the sealing treatment of the new pipeline are completed, the purpose is to install the new pipeline on the side wall of the open caisson 3, and the condition that sewage leakage does not occur between the new pipeline and the open caisson 3 is ensured.
In this embodiment, further, an inverted U-shaped slot is reserved at the bottom of the open caisson 3 corresponding to the position of the running pipeline 1, so that the open caisson 3 can sink without damaging the running pipeline 1.
In this embodiment, further, a newly-built pipeline can be constructed after the bottom sealing of the open caisson 3 and the plugging of the gap between the reserved inverted U-shaped groove and the running pipeline 1. And after the gap is blocked, the position of the open caisson 3 does not need to be lifted, and related lifting equipment can be removed.
In this embodiment, further, the sunk well 3 is reinforced at the bottom of the cutting edge of the sunk well 3 after the completion of prefabrication, and the reinforcement treatment of the bottom of the cutting edge of the sunk well 3 is performed by means of double-fluid grouting.
The purpose of reinforcing the bottom of the cutting edge of the open caisson 3 by grouting is to prevent the open caisson 3 from sinking at the position of the open caisson 3 in the bottom sealing process and prevent the pipeline 1 in operation from being influenced.
Preferably, the bottom of the cutting edge of the open caisson 3 is reinforced by grouting to prevent the open caisson 3 from sinking in the bottom sealing process.
In this embodiment, further, the open caisson 3 prefabricating process can be performed in the process of working pit excavation and slope treatment.
In this embodiment, further, the top of the open caisson 3 is prefabricated with an inspection well 6.
Preferably, the manhole 6 is a masonry manhole, the top of the manhole 6 is flush with the ground, and the top of the manhole 6 is provided with a concrete well ring and a well cover 7.
In the embodiment, further, in the process of digging the pit in the working pit, the pipeline 1 dug by the working pit is stably vertically hoisted by using a crane and a hanging belt.
In this embodiment, further, the sinking position of the open caisson 3 needs to ensure that the pipeline 1 in operation is located in the inverted U-shaped groove.
In this embodiment, the concrete used for the back cover in S5 is quick-setting concrete 2.
In this embodiment, further, the broken pipeline may be lifted out of the caisson 3 in S9 by using a crane and a sling.
Preferably, the number of hanging points at the top of the running pipe 1 is not less than two when the running pipe 1 is cut.
In this embodiment, further, the top of the open caisson 3 is surrounded by a rammed layer of coarse sand 5. So as to protect the top outer sidewall of the open caisson 3.
In this embodiment, further, the pipe 1 and the open caisson 3 in operation are subjected to roughening treatment, so as to improve the connection stability between the pipe 1 and the open caisson 3 in operation.
The method solves the problem of how to realize the construction method of fast butting between the newly-built small-diameter pipeline and the operated large-diameter pipeline without water supply interruption, reduces the construction cost in the construction process, reduces the influence on surrounding production and life, and has the advantages of high construction speed, safety guarantee, good economic effect and small influence. The sewage pipeline joint device is particularly suitable for the butt joint of a newly-built small-pipe-diameter sewage pipeline and an operated large-pipe-diameter sewage pipeline under the condition of not stopping water. The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A quick construction method for non-stop touch joint of a newly-built sewage pipeline and an operation pipeline is characterized by comprising the following steps:
s1, excavating a working pit and processing a side slope;
s2, prefabricating the open caisson according to a construction drawing, and reserving an inverted U-shaped groove and a reserved opening of a new pipeline on the side wall of the bottom of the prefabricated open caisson;
s3, positioning the open caisson, and temporarily plugging the reserved port of the new pipeline;
s4, sinking the open caisson to a required position;
s5, carrying out bottom sealing treatment on the bottom of the working pit, and pouring construction joints at the bottom of the open caisson and the top of the bottom seal by using impervious concrete after the concrete for bottom sealing treatment is solidified;
s6, plugging a gap between the inverted U-shaped clamping groove and a contact part of a running pipeline;
s7, performing seal breaking treatment on the reserved opening of the new pipeline, and completing installation and plugging treatment of the newly-built pipeline;
s8, waiting for the time when the water quantity in the running pipeline is small, adopting a proper water reducing measure, installing a lifting point at the top of the running pipeline positioned in the open caisson, and utilizing frogman to carry out breaking operation on the running pipeline;
s9, lifting the broken pipeline out of the open caisson;
and S10, backfilling earthwork and recovering the ground.
2. The rapid construction method for the non-stop water collision connection of the newly-built sewage pipeline and the operation pipeline according to claim 1, wherein the sunk well is subjected to reinforcement treatment on the bottom of the sunk well cutting edge after the completion of prefabrication, and the reinforcement treatment on the bottom of the sunk well cutting edge adopts a double-fluid grouting reinforcement treatment mode.
3. The method of claim 1, wherein the open caisson prefabrication process is performed during excavation and slope treatment of the working pit.
4. The rapid construction method for the non-stop water collision of the newly-built sewage pipeline and the operation pipeline according to claim 1, wherein an inspection well is prefabricated at the top of the open caisson.
5. The method of claim 1, wherein the vertical hoisting of the newly-built sewage pipeline is stabilized by a crane and a sling during the excavation of the pit.
6. The method of claim 1, wherein the sinking position of the open caisson is determined so that the pipeline in operation is located in the inverted U-shaped groove.
7. The method of claim 1, wherein the concrete used for sealing the bottom in S5 is quick-setting concrete.
8. The method of claim 1, wherein the broken sewage pipes are lifted out of the caisson in step S9 by a crane and a sling.
9. The method of claim 1, wherein the top of the open caisson is surrounded by a rammed coarse sand layer.
10. The method as claimed in claim 1, wherein the piping is roughened to the open caisson.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010916997.0A CN112095748A (en) | 2020-09-03 | 2020-09-03 | Rapid construction method for non-stop butt joint of newly-built sewage pipeline and operation pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010916997.0A CN112095748A (en) | 2020-09-03 | 2020-09-03 | Rapid construction method for non-stop butt joint of newly-built sewage pipeline and operation pipeline |
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| CN112095748A true CN112095748A (en) | 2020-12-18 |
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| CN202010916997.0A Pending CN112095748A (en) | 2020-09-03 | 2020-09-03 | Rapid construction method for non-stop butt joint of newly-built sewage pipeline and operation pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113833085A (en) * | 2021-11-12 | 2021-12-24 | 中建七局安装工程有限公司 | Maintenance method for inspection well without stopping water supply |
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| EP2146127A2 (en) * | 2008-07-17 | 2010-01-20 | Shonan Gosei - Jushi Seisakusho K.K. | Rehabilitating pipe segment and existing pipe rehabilitation method using same |
| CN108222223A (en) * | 2017-11-20 | 2018-06-29 | 杭州市市政工程集团有限公司 | A kind of inspection shaft and method for cutting over for having pressure sewage conduct cutover for Large Diameter Pipeline |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113833085A (en) * | 2021-11-12 | 2021-12-24 | 中建七局安装工程有限公司 | Maintenance method for inspection well without stopping water supply |
| CN113833085B (en) * | 2021-11-12 | 2023-06-20 | 中建七局安装工程有限公司 | Maintenance method for inspection well without stopping water |
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Application publication date: 20201218 |
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