CN107940100B - Four-point oriented drag pipe construction method - Google Patents
Four-point oriented drag pipe construction method Download PDFInfo
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- CN107940100B CN107940100B CN201711198697.8A CN201711198697A CN107940100B CN 107940100 B CN107940100 B CN 107940100B CN 201711198697 A CN201711198697 A CN 201711198697A CN 107940100 B CN107940100 B CN 107940100B
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- pipe
- open caisson
- hole
- meters
- main pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Earth Drilling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to the field of underground pipeline construction, in particular to a four-point oriented drag pipe construction method; the method is characterized in that: the method comprises the steps of reaming reserved holes of the open caisson on the east side and the west side and cleaning holes, wherein a stretch pipe is continuously connected between the reamer and a main pipe; performing reamer back-dragging operation through a drill pipe machine, and judging whether friction is generated between the extension pipe and the well wall when the reamer reaches 5 meters in front of a reserved hole opening of the east open caisson; after the main pipe passes through the east caisson, pulling instead of rotating is adopted for back-dragging construction; when the main pipe is 5 meters away from the west river bank, the speed is reduced again, and whether pipeline friction exists in the caisson or not is checked; when the back expander safely passes through the west bank, the back expander is pulled in at a low speed until the main pipe safely passes through the west bank; and removing the back expander and the drill rod machine, and completing pipe penetration. Compared with the prior art, the pipe penetrating method has the advantages that the reducing guide effect is achieved by arranging the extension pipe, and meanwhile, the deformation capacity of the whole steel pipe is improved, so that the steel pipe can accurately penetrate through the reserved hole opening of the open caisson.
Description
Technical Field
The invention relates to the field of underground pipeline construction, in particular to a four-point oriented dragging pipe construction method.
Background
For underground pipelines needing to be penetrated by blind holes, for example, a steel pipe sleeve steel pipe mode is mostly adopted when ports need to be penetrated. The difficulty of the operation is that the passing-through pipeline passes through reserved holes of open caisson at two sides of a pipeline path, and simultaneously the existing underground objects are avoided, for the passing-through of the four-point directional dragging pipe, the problems that a main pipe collides with a well wall, worms collide with a shore protection pile and the like are easily caused, and the construction of the gold dragging pipe is failed in serious cases, so that the accuracy of the construction operation is very high.
Disclosure of Invention
The invention aims to provide a construction method of a dragging pipe, which has the characteristics of high construction efficiency and accurate pipe penetration.
In order to achieve the above object, the present invention is realized by:
a four-point oriented drag pipe construction method comprises
Step 1, hole expanding and hole cleaning operations of reserved holes of the east-side and west-side open caisson: carrying out reaming and hole cleaning operation by adopting an reamer from a reserved hole of the open caisson at one side to a reserved hole of the open caisson at the other side, and injecting bentonite into the hole in the reaming process to keep the hole lubricated; meanwhile, the change of the torque and the tension on the drilling machine is concerned at all times in the reaming process, and the change state is recorded;
step 2, after the reamer reaches a reserved hole opening of the open caisson on the west side, a section of extension pipe is continuously connected between the reamer and the main pipe;
step 3, performing reamer back-dragging operation through a drill rod machine, and avoiding rotation and recording reamer advancing data when the pipeline is back-dragged;
step 3.1, when the reamer drives the extension pipe and the main pipe to reach 5 meters in front of the reserved hole of the east open caisson, slowing down the pulling speed, observing the sound in the hole and the change of the related soil quality in the hole through the reserved hole of the east open caisson, and judging whether the extension pipe and the well wall generate friction or not until the whole main pipe passes through the reserved hole of the east open caisson;
step 4, after the main pipe passes through the east-side open caisson, monitoring a drill pipe machine, recording the length of the drill pipe entering the east-side open caisson, performing back-dragging construction on the main pipe in a river channel, rotating the pipe body according to the tensile force of the pipe body, if the tensile force is increased, keeping the rotation of each 6 meters not to exceed 3 circles in the rotating process, and after the main pipe is dragged back for 50 meters, replacing the rotation with pulling to perform back-dragging construction when the tensile force is not changed greatly;
step 5, according to the length of the follow-up drill rod, when the back expander is 10 meters away from the west river bank, reducing the pulling speed, when the main pipe is 5 meters away from the west river bank, reducing the speed again and checking whether pipeline friction exists in the caisson;
step 6, when the back expander safely passes through the west river bank, the back expander is pulled in at a low speed until the main pipe safely passes through the west river bank;
and 7, removing the back expander and the drill rod machine, and completing pipe penetration.
The construction method of the four-point oriented dragging pipe is characterized in that the total length of the dragging pipe is 30 meters, wherein 10 meters is DN300 and 8mm in wall thickness, 10 meters is DN480 and 8mm in wall thickness, and the connecting main pipe is a Q235 threaded steel pipe with 10 meters, D630 and 10mm in wall thickness; d300 connects D480 and then connects to D630 pipe, adopts argon electricity to ally oneself with to weld between the pipeline, wherein Q235 tubular product and 20G pipe are welded, need to carry out the crater and preheat, and the tempering is carried out to the extension pipe after the welding is accomplished in order to eliminate the stress concentration phenomenon that the welding exists between the different materials.
Compared with the prior art, the pipe penetrating method has the advantages that the reducing guide effect is achieved by arranging the extension pipe, and meanwhile, the deformation capacity of the whole steel pipe is improved, so that the steel pipe can accurately penetrate through the reserved hole opening of the open caisson.
Detailed Description
The invention is further illustrated by the following specific examples.
A four-point oriented drag pipe construction method comprises
Step 1, hole expanding and hole cleaning operations of reserved holes of the east-side and west-side open caisson: carrying out reaming and hole cleaning operation by adopting an reamer from a reserved hole of the open caisson at one side to a reserved hole of the open caisson at the other side, and injecting bentonite into the hole in the reaming process to keep the hole lubricated; meanwhile, the change of the torque and the tension on the drilling machine is concerned at all times in the reaming process, and the change state is recorded;
step 2, after the reamer reaches a reserved hole opening of the open caisson on the west side, a section of extension pipe is continuously connected between the reamer and the main pipe;
step 3, performing reamer back-dragging operation through a drill rod machine, and avoiding rotation and recording reamer advancing data when the pipeline is back-dragged;
step 3.1, when the reamer drives the extension pipe and the main pipe to reach 5 meters in front of the reserved hole of the east open caisson, slowing down the pulling speed, observing the sound in the hole and the change of the related soil quality in the hole through the reserved hole of the east open caisson, and judging whether the extension pipe and the well wall generate friction or not until the whole main pipe passes through the reserved hole of the east open caisson;
step 4, after the main pipe passes through the east-side open caisson, monitoring a drill pipe machine, recording the length of the drill pipe entering the east-side open caisson, performing back-dragging construction on the main pipe in a river channel, rotating the pipe body according to the tensile force of the pipe body, if the tensile force is increased, keeping the rotation of each 6 meters not to exceed 3 circles in the rotating process, and after the main pipe is dragged back for 50 meters, replacing the rotation with pulling to perform back-dragging construction when the tensile force is not changed greatly;
step 5, according to the length of the follow-up drill rod, when the back expander is 10 meters away from the west river bank, reducing the pulling speed, when the main pipe is 5 meters away from the west river bank, reducing the speed again and checking whether pipeline friction exists in the caisson;
step 6, when the back expander safely passes through the west river bank, the back expander is pulled in at a low speed until the main pipe safely passes through the west river bank;
and 7, removing the back expander and the drill rod machine, and completing pipe penetration.
The construction method of the four-point oriented dragging pipe is characterized in that the total length of the dragging pipe is 30 meters, wherein 10 meters is DN300 and 8mm in wall thickness, 10 meters is DN480 and 8mm in wall thickness, and the connecting main pipe is a Q235 threaded steel pipe with 10 meters, D630 and 10mm in wall thickness; d300 connects D480 and then connects to D630 pipe, adopts argon electricity to ally oneself with to weld between the pipeline, wherein Q235 tubular product and 20G pipe are welded, need to carry out the crater and preheat, and the tempering is carried out to the extension pipe after the welding is accomplished in order to eliminate the stress concentration phenomenon that the welding exists between the different materials.
Compared with the prior art, the pipe penetrating method has the advantages that the reducing guide effect is achieved by arranging the extension pipe, and meanwhile, the deformation capacity of the whole steel pipe is improved, so that the steel pipe can accurately penetrate through the reserved hole opening of the open caisson.
Claims (2)
1. A four-point oriented drag pipe construction method is characterized in that: comprises that
Step 1, hole expanding and hole cleaning operations of reserved holes of the east-side and west-side open caisson: carrying out reaming and hole cleaning operation by adopting an reamer from a reserved hole of the open caisson at one side to a reserved hole of the open caisson at the other side, and injecting bentonite into the hole in the reaming process to keep the hole lubricated; meanwhile, the change of the torque and the tension on the drilling machine is concerned at all times in the reaming process, and the change state is recorded;
step 2, after the reamer reaches a reserved hole opening of the open caisson on the west side, a section of extension pipe is continuously connected between the reamer and the main pipe;
step 3, performing reamer back-dragging operation through a drill rod machine, and avoiding rotation and recording reamer advancing data when the pipeline is back-dragged;
step 3.1, when the reamer drives the extension pipe and the main pipe to reach 5 meters in front of the reserved hole of the east open caisson, slowing down the pulling speed, observing the sound in the hole and the change of the related soil quality in the hole through the reserved hole of the east open caisson, and judging whether the extension pipe and the well wall generate friction or not until the whole main pipe passes through the reserved hole of the east open caisson;
step 4, after the main pipe passes through the east-side open caisson, monitoring a drill pipe machine, recording the length of the drill pipe entering the east-side open caisson, performing back-dragging construction on the main pipe in a river channel, rotating the pipe body according to the tensile force of the pipe body, if the tensile force is increased, keeping the rotation of each 6 meters not to exceed 3 circles in the rotating process, and after the main pipe is dragged back for 50 meters, replacing the rotation with pulling to perform back-dragging construction when the tensile force is not changed greatly;
step 5, according to the length of a follow-up drill rod, when the back expander is 10 meters away from the reserved hole of the west open caisson, reducing the pulling-in speed, when the main pipe is 5 meters away from the reserved hole of the west open caisson, reducing the speed again and checking whether pipeline friction exists in the open caisson;
step 6, when the back expander safely passes through the reserved hole of the west open caisson, keeping low-speed drawing in until the main pipe safely passes through the reserved hole of the west open caisson;
and 7, removing the back expander and the drill rod machine, and completing pipe penetration.
2. The four-point oriented pulling pipe construction method according to claim 1, wherein: the total length of the extension pipe is 30 meters, wherein 10 meters is DN300 wall thickness 8mm, 10 meters is DN480 wall thickness 8mm, and the connecting main pipe adopts a Q235 threaded steel pipe with 10 meters, D630 wall thickness and 10mm wall thickness; d300 connects D480 and then connects to D630 pipe, adopts argon electricity to ally oneself with to weld between the pipeline, wherein Q235 tubular product and 20G pipe are welded, need to carry out the crater and preheat, and the tempering is carried out to the extension pipe after the welding is accomplished in order to eliminate the stress concentration phenomenon that the welding exists between the different materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711198697.8A CN107940100B (en) | 2017-11-26 | 2017-11-26 | Four-point oriented drag pipe construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711198697.8A CN107940100B (en) | 2017-11-26 | 2017-11-26 | Four-point oriented drag pipe construction method |
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| Publication Number | Publication Date |
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| CN107940100A CN107940100A (en) | 2018-04-20 |
| CN107940100B true CN107940100B (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711198697.8A Active CN107940100B (en) | 2017-11-26 | 2017-11-26 | Four-point oriented drag pipe construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113482530B (en) * | 2021-08-20 | 2022-10-14 | 北京城建亚泰建设集团有限公司 | Site-limited long-distance large-aperture horizontal directional drilling pipeline back-dragging construction process |
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| US5626442A (en) * | 1995-10-24 | 1997-05-06 | Boyer, Inc. | Pipe rehabilitation system and methods |
| CN101737060A (en) * | 2009-12-28 | 2010-06-16 | 中铁二局股份有限公司 | Beneath-soil through-tunnel superlarge diameter pipe curtain construction method |
| CN102147033A (en) * | 2010-02-09 | 2011-08-10 | 中国机械工业建设总公司 | Non-excavation directional traversing construction method for thermal power pipeline |
| CN103398215A (en) * | 2013-08-20 | 2013-11-20 | 江苏沃迪建设工程有限公司 | Minimally-invasive non-excavation pipe jacking and pull technology |
| CN103851257A (en) * | 2014-03-18 | 2014-06-11 | 国家电网公司 | Paired cable duct bank laying-based support pipe construction process |
| CN105673934A (en) * | 2015-12-24 | 2016-06-15 | 上海神洁环保科技股份有限公司 | Non-excavation cable laying and pipe arranging method |
| CN106439219A (en) * | 2016-09-30 | 2017-02-22 | 中国冶集团有限公司 | Reamer separation device for non-excavation directional drilling pipeline and construction method of reamer separation device |
| CN106869284A (en) * | 2017-04-19 | 2017-06-20 | 李齐军 | A kind of construction method for leading slurry trombone slide |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1018766A (en) * | 1996-07-03 | 1998-01-20 | Tokyo Gas Co Ltd | Pipe draw-in process |
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2017
- 2017-11-26 CN CN201711198697.8A patent/CN107940100B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5626442A (en) * | 1995-10-24 | 1997-05-06 | Boyer, Inc. | Pipe rehabilitation system and methods |
| CN101737060A (en) * | 2009-12-28 | 2010-06-16 | 中铁二局股份有限公司 | Beneath-soil through-tunnel superlarge diameter pipe curtain construction method |
| CN102147033A (en) * | 2010-02-09 | 2011-08-10 | 中国机械工业建设总公司 | Non-excavation directional traversing construction method for thermal power pipeline |
| CN103398215A (en) * | 2013-08-20 | 2013-11-20 | 江苏沃迪建设工程有限公司 | Minimally-invasive non-excavation pipe jacking and pull technology |
| CN103851257A (en) * | 2014-03-18 | 2014-06-11 | 国家电网公司 | Paired cable duct bank laying-based support pipe construction process |
| CN105673934A (en) * | 2015-12-24 | 2016-06-15 | 上海神洁环保科技股份有限公司 | Non-excavation cable laying and pipe arranging method |
| CN106439219A (en) * | 2016-09-30 | 2017-02-22 | 中国冶集团有限公司 | Reamer separation device for non-excavation directional drilling pipeline and construction method of reamer separation device |
| CN106869284A (en) * | 2017-04-19 | 2017-06-20 | 李齐军 | A kind of construction method for leading slurry trombone slide |
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| CN107940100A (en) | 2018-04-20 |
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