CN112281856A - Construction method for in-situ protection of original pipeline in foundation pit - Google Patents
Construction method for in-situ protection of original pipeline in foundation pit Download PDFInfo
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- CN112281856A CN112281856A CN202011086271.5A CN202011086271A CN112281856A CN 112281856 A CN112281856 A CN 112281856A CN 202011086271 A CN202011086271 A CN 202011086271A CN 112281856 A CN112281856 A CN 112281856A
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- pipeline
- supporting
- foundation pit
- construction method
- situ protection
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- 238000010276 construction Methods 0.000 title claims abstract description 28
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 17
- 239000002689 soil Substances 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 230000035939 shock Effects 0.000 claims description 12
- 238000009412 basement excavation Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 3
- 230000003111 delayed effect Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 4
- 101150054854 POU1F1 gene Proteins 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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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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- 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
- F16L1/11—Accessories therefor, e.g. anchors for the detection or protection of pipes in the ground
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Foundations (AREA)
Abstract
The application relates to a construction method for original pipeline in-situ protection in a foundation pit, which comprises the following steps: s1, excavating a foundation pit: firstly, determining the position of a pipeline, excavating the pipeline, then excavating a foundation pit, reserving a soil body below the pipeline, and supporting the pipeline; s2, excavating a support device mounting groove: determining the distance between the pipeline supporting devices, digging a groove for mounting the supporting devices, digging the bottom end of the groove to the bottom of a foundation pit, and digging the top end of the groove to the bottom of the pipeline; s3, mounting a supporting device; and S4, digging and removing soil below the pipeline. The foundation pit is prevented from being changed out by the pipeline, construction cost is saved, and the construction period is not delayed.
Description
Technical Field
The application relates to the field of foundation pit protection, in particular to a construction method for in-situ protection of an original pipeline in a foundation pit.
Background
In recent years, more and more building projects are provided in areas with dense urban buildings, the surrounding environment of a construction site is more and more complex, and more original underground pipelines are encountered during excavation of foundation pits.
When the existing foundation pit excavation meets the underground pipeline crossing the foundation pit, the problem of protecting the underground pipeline is generally solved by adopting a mode of changing the pipeline to the outer side of the foundation pit. However, the pipeline replacement cost is too high, the replacement period is long, and the normal construction period is delayed.
Disclosure of Invention
In order to solve the problems that pipeline shifting cost is too high, the shifting construction period is long, and the normal construction period can be delayed, the application provides a construction method for in-situ protection of an original pipeline in a foundation pit.
The application provides a construction method for original pipeline in-situ protection in a foundation pit, which adopts the following technical scheme:
a construction method for in-situ protection of an original pipeline in a foundation pit comprises the following steps:
s1, excavating a foundation pit: firstly, determining the position of a pipeline, excavating soil at the top of the pipeline by utilizing manual excavation to expose the pipeline, then excavating a foundation pit, reserving soil below the pipeline, and supporting the pipeline;
s2, excavating a groove for installing the supporting device: determining the distance between the supporting devices of the pipeline, digging a groove for mounting the supporting devices, digging the bottom end of the groove to the bottom of a foundation pit, and digging the top end of the groove to the bottom of the pipeline;
s3, mounting a supporting device: the supporting device is arranged in the excavated groove to support the pipeline;
and S4, digging and removing soil below the pipeline.
By adopting the technical scheme, firstly, the position of the pipeline is determined, the pipeline is prevented from being damaged during excavation, then foundation pit excavation is carried out, soil body below the pipeline is reserved, the pipeline is supported, then a groove for installing the supporting device is excavated in the soil body below the pipeline, the supporting device is installed, and after the supporting device is installed, the rest part of the soil body below the pipeline is excavated; the pipeline is supported by reserving the soil body below the pipeline, so that the pipeline cannot be broken in the process of excavating the foundation pit, then the supporting device is installed, finally, the foundation pit excavation is completed, the pipeline is prevented from being changed out of the foundation pit, the construction cost is saved, and the construction period is not delayed.
Optionally, in step S3, the supporting device includes a base and a supporting seat, the supporting seat is made of H-shaped steel, a supporting pillar is fixedly arranged between the supporting seat and the base, one end of the supporting pillar is fixedly connected to the supporting seat, and the other end of the supporting pillar is fixedly connected to the base.
Through adopting above-mentioned technical scheme, the support column plays the supporting role, and the supporting seat makes the pipeline atress even, and strutting arrangement can play the bearing effect to the pipeline.
Optionally, in step S3, the supporting device includes a base, a supporting seat and a supporting pillar, one end of the supporting pillar is welded to the steel plate, the other end of the supporting pillar is welded to the first platen, one end of the supporting seat is welded to the second platen, a bolt is disposed between the first platen and the second platen, a bolt cap is welded to the top surface of the first platen, through holes are formed in four corners of the second platen, a first nut is screwed on the bolt, the second platen is sleeved on the bolt, and the first nut is screwed, so that the first nut can upwards support the second platen.
By adopting the technical scheme, the second flat bedplate is supported by screwing the first nut, so that the supporting seat is abutted against the pipeline, and the pipeline is guaranteed to be supported by the supporting device.
Optionally, the base includes a cast-in-place concrete foundation and a steel plate, the steel plate is embedded in the concrete foundation, and a top surface of the steel plate is flush with a top surface of the concrete foundation.
Through adopting above-mentioned technical scheme, the concrete intensity is high, provides stable base for the support column, and the steel sheet provides the plane for fixed stay post.
Optionally, the four corners of the bottom surface of the steel plate are fixedly provided with anchor bars, and the anchor bars are anchored into the concrete foundation.
By adopting the technical scheme, the anchor bars are anchored into the concrete foundation, so that the steel plate is more firmly connected with the concrete foundation.
Optionally, the pipe brackets are respectively and fixedly arranged at one ends of the two flange plates, far away from the supporting column, of the supporting seat, and the pipe brackets are arc-shaped plates.
Through adopting above-mentioned technical scheme, the conduit saddle is the arc, is located the both sides of pipeline, fixes the pipeline, makes the pipeline more firm.
Optionally, the position of the pipeline installation supporting device is wrapped with a shock pad, the shock pad is a rubber pad, and the thickness of the shock pad is 1 cm.
Through adopting above-mentioned technical scheme, the shock pad plays the shock attenuation effect, prevents that strutting arrangement from destroying the pipeline.
Optionally, the length of the support column is 0.5cm greater than the distance between the support base and the base.
Through adopting above-mentioned technical scheme, during the installation support column, the shock pad is extruded, ensures that the support column withstands the supporting seat for the supporting seat supports tight pipeline, and strutting arrangement plays the supporting role.
In summary, the present application includes at least one of the following beneficial technical effects:
the pipeline is supported by reserving the soil body below the pipeline, so that the pipeline cannot be broken in the process of excavating the foundation pit, then the supporting device is installed, finally, the foundation pit excavation is completed, the pipeline is prevented from being changed out of the foundation pit, the construction cost is saved, and the construction period is not delayed.
Drawings
FIG. 1 is a schematic view of a structure of a soil body below a pipeline after excavation of foundation pits on two sides of the pipeline is completed and reserved.
Fig. 2 is a schematic view of a structure for completing excavation of a groove in a soil body below a pipeline.
Fig. 3 is a schematic perspective view of the support device in embodiment 1.
Fig. 4 is a schematic view of the structure of the steel plate and the anchor bar.
Fig. 5 is a schematic view of the mounting completion structure of the support device.
FIG. 6 is a schematic view of the structure of the earth beneath the excavated pipe.
Fig. 7 is a schematic perspective view of the support device in example 2.
Fig. 8 is an enlarged view of a in fig. 7.
Description of reference numerals: 1. a foundation pit; 2. a pipeline; 3. soil mass below the pipeline; 31. a trench; 4. a support device; 41. a base; 411. a concrete foundation; 412. a steel plate; 4121. anchoring ribs; 42. a support pillar; 43. a supporting seat; 44. a pipe bracket; 45. a platform plate; 451. a first platen; 452. a second platen; 453. a bolt; 454. a first nut; 455. a second nut; 5. a shock pad; 6. a steel cord.
Detailed Description
The present application is described in further detail below with reference to figures 1-8.
The embodiment of the application discloses a construction method for in-situ protection of an original pipeline in a foundation pit.
Example 1:
a construction method for in-situ protection of an original pipeline in a foundation pit comprises the following steps:
s1, excavating a foundation pit: referring to fig. 1, firstly, according to a drawing and manual trench digging detection, the position of a pipeline 2 is determined, the pipeline 2 is dug out by using machinery and manual work, the pipeline 2 is prevented from being damaged when a foundation pit 1 is dug, then the foundation pit 1 is dug, a soil body 3 below the pipeline is reserved, and the pipeline 2 is supported.
S2, excavating a groove for installing the supporting device: referring to fig. 2, according to the length of pipeline 2 strideing across foundation ditch 1 section and the weight of pipeline 2, confirm the interval that pipeline 2 strutting arrangement 4 set up, then use excavator cooperation manual work to dig out the slot 31 of installation strutting arrangement 4 at pipeline below soil body 3, the slot 31 bottom is dug to foundation ditch 1 bottom, and the top is dug to pipeline 2 bottom, and there can be the space of installation strutting arrangement 4 slot 31 size assurance.
S3, mounting the supporting device 4: referring to fig. 3 and 4, the supporting device 4 includes a base 41, a supporting pillar 42 and a supporting seat 43, the base 41 includes a concrete foundation 411 and a steel plate 412, a foundation pit for casting the concrete foundation 411 is first dug out at the bottom of the trench 31, concrete is cast in the foundation pit, then the steel plate 412 is placed in the concrete, the steel plate 412 is horizontally arranged, the top surface of the steel plate is flush with the top surface of the concrete foundation 411, anchor bars 4121 are fixedly arranged at four corners of the bottom of the steel plate 412, the anchor bars 4121 are anchored in the concrete foundation 411, and the steel plate 412 is more stably connected with the concrete foundation 411 by the anchor bars 4121.
Referring to fig. 3 and 5, firstly, a circle of shock pad 5 is wrapped at the position where the supporting device 4 is installed on the pipeline 2, the shock pad 5 is a rubber pad, the thickness of the shock pad is 1cm, and the rubber pad has certain elasticity;
the supporting column 42 is made of H-shaped steel, the supporting seat 43 is made of H-shaped steel, pipe brackets 44 are welded at the end parts of two flange plates of the supporting seat 43 on the same side respectively, the pipe brackets 44 are arc-shaped steel plates 412, holes are formed in one ends, far away from the base 41, of the pipe brackets 44, steel wire ropes 6 are arranged in the holes in the two pipe brackets 44 in a penetrating mode, the supporting seat 43 is fixed at the bottom of the pipeline 2, the pipeline 2 is located in an arc-shaped groove formed by the pipe brackets 44 and the supporting seat 43, a rubber pad is located between the base 41 and the pipeline 2, a platform plate 45 is welded at one end, far away from the pipe brackets 44, of the supporting seat 43, the platform plate 45 is a rectangular steel plate, and one side;
then install the support column 42, the support column 42 is set between the platform plate 45 and the base 41, firstly measure the distance between the base 41 and the platform plate 45, then make the support column 42 according to the measured data, the length of the support column 42 is greater than the distance between the base 41 and the platform plate 45 measured by 0.5cm, plug the support column 42 between the base 41 and the platform plate 45, one end of the support column 42 is welded with the platform plate 45, the other end is welded with the steel plate 412 in the base 41, because the length of the support column 42 is greater than the distance between the base 41 and the platform plate 45, the rubber pad can be compressed, thus ensure that the support device 4 can support the pipeline 2.
S4, digging out soil below the pipeline: referring to fig. 6, after the plurality of pipe 2 supporting means 4 are installed, the soil 3 under the pipes remaining in S1 is excavated using a machine and a worker.
The implementation principle of the embodiment 1 is as follows: firstly, determining the position of a pipeline 2, then excavating a foundation pit 1, reserving soil mass below the pipeline 2, supporting the pipeline 2, then excavating a groove 31 for installing a supporting device 4 on the soil mass 3 below the pipeline, then wrapping a rubber pad on the pipeline 2, installing the supporting device 4, extruding the rubber pad by the supporting device 4, ensuring the stress of the pipeline 2, supporting the supporting device 4, and excavating the residual soil mass below the pipeline 2.
Example 2:
referring to fig. 7 and 8, the present embodiment is different from embodiment 1 in that the supporting device 4 includes a base 41, a supporting column 42, a first platform plate 451, and a second platform plate 452, the first platform plate 451 is welded to the top end of the supporting column 42, the second platform plate 452 is welded to the bottom of the supporting seat 43, bolts 453 are welded to the four corners of the first platform plate 451, respectively, caps of the bolts are welded to the top surface of the first platform plate 451, a through hole is arranged at the four corners of the second platform plate 452, a first nut 454 is screwed on the bolt 453, the second platform plate 452 is sleeved on the bolt 453, the first nut 454 is screwed, the first nut 454 upwards supports the second platform plate 452, so that the base 41 is abutted against the pipeline 2 to ensure that the supporting device 4 supports the pipeline 2, then, the second nut 455 is screwed into the bolt 453 and tightened, and the second nut 455 prevents the second platform plate 452 from being detached from the bolt 453 due to vibration generated during construction.
The implementation principle of the embodiment 2 is as follows: by screwing the first nut 454, the first nut 454 supports the second platform plate 452, so that the supporting seat 43 abuts against the pipeline 2, the supporting column 42 is stressed, and the supporting device 4 is ensured to support the pipeline 2.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A construction method for original pipeline in-situ protection in a foundation pit is characterized by comprising the following steps: the method comprises the following steps:
s1, excavating a foundation pit: firstly, determining the position of a pipeline (2), excavating soil at the top of the pipeline (2) by utilizing manual excavation to expose the pipeline (2), then excavating a foundation pit (1), reserving a soil body (3) below the pipeline, and supporting the pipeline (2);
s2, excavating a groove for installing the supporting device: determining the distance between the supporting devices (4) of the pipeline (2), digging out a groove (31) for installing the supporting devices (4), digging the bottom end of the groove (31) to the bottom of the foundation pit (1), and digging the top end of the groove to the bottom of the pipeline (2);
s3, mounting a supporting device: the supporting device (4) is arranged in the excavated groove (31) and used for supporting the pipeline (2);
and S4, digging and removing soil below the pipeline.
2. The construction method for in-situ protection of the original pipeline in the foundation pit according to claim 1, characterized in that: in step S3, the supporting device (4) includes a base (41) and a supporting seat (43), the supporting seat (43) is made of H-shaped steel, a supporting pillar (42) is fixedly disposed between the supporting seat (43) and the base (41), one end of the supporting pillar (42) is fixedly connected to the supporting seat (43), and the other end of the supporting pillar is fixedly connected to the base (41).
3. The construction method for in-situ protection of the original pipeline in the foundation pit according to claim 1, characterized in that: in the step S3, the supporting device (4) comprises a base (41), a supporting seat (43) and a supporting column (42), one end of the supporting column (42) is welded with the steel plate (412), the other end of the supporting column is welded with a first platform plate (451), one end of the supporting seat (43) is welded with a second platform plate (452), a bolt (453) is arranged between the first platform plate (451) and the second platform plate (452), a bolt cap is welded with the top surface of the first platform plate (451), a through hole is formed in the four corners of the second platform plate (452), a first nut (454) is screwed on the bolt (453), the second platform plate (452) is sleeved on the bolt (453), the first nut (454) is screwed, and the first nut (454) can upwards support the second platform plate (452).
4. The construction method for in-situ protection of the original pipeline in the foundation pit according to claim 2 or 3, characterized in that: the base (41) comprises a cast-in-place concrete foundation (411) and a steel plate (412), the steel plate (412) is embedded in the concrete foundation (411), and the top surface of the steel plate (412) is flush with the top surface of the concrete foundation (411).
5. The construction method for in-situ protection of the original pipeline in the foundation pit according to claim 4, characterized in that: anchor bars (4121) are fixedly arranged at four corners of the bottom surface of the steel plate (412), and the anchor bars (4121) are anchored in the concrete foundation (411).
6. The construction method for in-situ protection of the original pipeline in the foundation pit according to claim 2 or 3, characterized in that: pipe brackets (44) are fixedly arranged at one ends of the two flange plates of the supporting seat (43) far away from the supporting column (42), and the pipe brackets (44) are arc-shaped plates.
7. The construction method for in-situ protection of the original pipeline in the foundation pit according to claim 1, characterized in that: the position of the pipeline (2) where the supporting device (4) is installed is wrapped with a shock pad (5), and the shock pad (5) is a rubber pad and is 1cm thick.
8. The construction method for in-situ protection of the original pipeline in the foundation pit according to claim 7, characterized in that: the length of the supporting column (42) is 0.5cm larger than the distance between the supporting seat (43) and the base (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011086271.5A CN112281856A (en) | 2020-10-12 | 2020-10-12 | Construction method for in-situ protection of original pipeline in foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011086271.5A CN112281856A (en) | 2020-10-12 | 2020-10-12 | Construction method for in-situ protection of original pipeline in foundation pit |
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| Publication Number | Publication Date |
|---|---|
| CN112281856A true CN112281856A (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011086271.5A Pending CN112281856A (en) | 2020-10-12 | 2020-10-12 | Construction method for in-situ protection of original pipeline in foundation pit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114277836A (en) * | 2022-02-10 | 2022-04-05 | 西安热工研究院有限公司 | An infrastructure for adding equipment to an existing trench |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10185000A (en) * | 1996-12-24 | 1998-07-14 | Yazaki Corp | Jig for corrugated tube |
| CN104896196A (en) * | 2015-05-27 | 2015-09-09 | 济南轨道交通集团有限公司 | Feather type large-diameter municipal pipe protection support and arrangement method thereof |
| CN211037053U (en) * | 2019-09-04 | 2020-07-17 | 东莞市莞城建筑工程有限公司 | Tube well suspension protection structure |
| CN211344229U (en) * | 2019-10-21 | 2020-08-25 | 华电电力科学研究院有限公司 | Sliding support bottom plate structure with freely adjustable height |
| CN111576446A (en) * | 2020-06-10 | 2020-08-25 | 中铁四局集团有限公司 | In-situ protection device and construction method for pressurized pipeline in underground foundation pit |
-
2020
- 2020-10-12 CN CN202011086271.5A patent/CN112281856A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10185000A (en) * | 1996-12-24 | 1998-07-14 | Yazaki Corp | Jig for corrugated tube |
| CN104896196A (en) * | 2015-05-27 | 2015-09-09 | 济南轨道交通集团有限公司 | Feather type large-diameter municipal pipe protection support and arrangement method thereof |
| CN211037053U (en) * | 2019-09-04 | 2020-07-17 | 东莞市莞城建筑工程有限公司 | Tube well suspension protection structure |
| CN211344229U (en) * | 2019-10-21 | 2020-08-25 | 华电电力科学研究院有限公司 | Sliding support bottom plate structure with freely adjustable height |
| CN111576446A (en) * | 2020-06-10 | 2020-08-25 | 中铁四局集团有限公司 | In-situ protection device and construction method for pressurized pipeline in underground foundation pit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114277836A (en) * | 2022-02-10 | 2022-04-05 | 西安热工研究院有限公司 | An infrastructure for adding equipment to an existing trench |
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