CN110792105A - Existing in-situ pipe well segmented obstacle clearing method and device - Google Patents
Existing in-situ pipe well segmented obstacle clearing method and device Download PDFInfo
- Publication number
- CN110792105A CN110792105A CN201911130367.4A CN201911130367A CN110792105A CN 110792105 A CN110792105 A CN 110792105A CN 201911130367 A CN201911130367 A CN 201911130367A CN 110792105 A CN110792105 A CN 110792105A
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- situ
- existing
- flexible high
- pipe
- pipe well
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- 238000011065 in-situ storage Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- 238000005520 cutting process Methods 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000005553 drilling Methods 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 12
- 230000011218 segmentation Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000009933 burial Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/02—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by withdrawing
-
- 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
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F3/00—Severing by means other than cutting; Apparatus therefor
- B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/04—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by cutting-off under water
Abstract
The invention belongs to the field of underground obstacle clearing, and discloses a segmented obstacle clearing method and a segmented obstacle clearing device for an existing in-situ pipe well The method is rapid and safe, and solves the problems of great surrounding environment influence, great production cost and the like in the process of removing underground obstacles.
Description
Technical Field
The invention belongs to the field of underground obstacle clearing, and particularly relates to a segmented obstacle clearing method and device for an existing in-situ pipe well.
Background
The underground obstacle clearing of the construction site is inevitable in the construction process, is complex, and has uncertainty on information such as the position, the shape, the size, the burial depth and the like of the underground obstacle. Before the construction of foundation pit engineering, the underground unknown obstacles in the construction site are inevitably removed and broken, so that the construction progress is prevented from being influenced by a large number of obstacles in the construction process of the enclosure structure.
At present, the following two methods are only needed for clearing the obstacle: (1) vibrating pile sinking and extracting machine: for the obstacles in the high environment requirement area, a vibration pile driver sinking and extracting mode is usually adopted for removing the obstacles, so that the method is simple, quick and effective, the construction noise is low, and the obstacles have vibration; is a common obstacle removing mode; (2) clearing obstacles by using a 360-degree full-slewing drilling machine: for underground obstacles with larger cross section and deeper burial depth, such as cast-in-situ bored piles and the like, the obstacles are more complicated, are removed by adopting a rotary cylinder pile extractor, and have formed a corresponding mature technology, so the cost is higher.
At present, no better method is available for removing underground obstacles such as in-situ tubular wells with deeper burial depth and small cross sections. The construction is carried out by adopting the existing open cut method technology, and because underground obstacles are deep, the influence on the environment is large, and the construction effect is poor; if the 360-degree full-rotation drilling machine technology is adopted for obstacle clearing, the method is high in construction cost and uneconomical due to the fact that the cross section of the obstacle is small.
Disclosure of Invention
The invention aims to provide a method and a device for removing obstacles by sections of an existing in-situ pipe well, which have practicability and operability, avoid using corresponding equipment such as a large-scale vibration pile driver, a full-slewing drilling machine and the like, reduce the influence on the environment, are convenient, rapid and safe to operate, and solve the problems of larger peripheral environment influence, larger production cost and the like generated in the process of removing underground obstacles.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides an existing normal position pipe well segmentation device of removing obstacles, includes a portable water cutting equipment who is used for cutting normal position pipe well, portable water cutting equipment includes water storage tank, booster pump, flexible high-voltage tube, casing, water sword tool bit, motor drive, rolling disc, rotatory pipeline and connecting device, the one end and the booster pump of flexible high-voltage tube are connected, the other end of flexible high-voltage tube stretch into in the casing with rotatory pipeline's upper end is passed through connecting device and is connected, rotatory pipeline's lower extreme setting water sword tool bit, flexible high-voltage tube with connecting device fixed connection, rotatory pipeline can be relative flexible high-voltage tube rotates, motor drive drives the rolling disc rotates, the rolling disc fixed cover is located on the rotatory pipeline, water in the water storage tank is behind the booster pump pressure boost, in proper order through flexible high-voltage tube, The connecting device and the rotary pipeline are ejected out through the water jet cutter head, and the shell, the water jet cutter head, the motor transmission device, the rotating disc, the rotary pipeline and the connecting device can move up and down in the in-situ pipe well along with the flexible high-pressure pipe.
Preferably, in foretell existing normal position tubular well segmentation obstacles removing device, portable water cutting equipment still includes the walking wheel, set up respectively around the casing the walking wheel makes the casing can be through the walking wheel along the inner wall of normal position tubular well is walked from top to bottom.
Preferably, in the existing in-situ pipe well subsection obstacle removing device, the connecting device is a universal device.
Preferably, in foretell existing normal position tubular well segmentation obstacles removing device, universal device includes fixed part and rotating part, the rotating part with fixed part coaxial coupling, just the rotating part can be relative the fixed part rotates, the fixed part with flexible high-pressure line fixed connection, the rotating part with rotatory pipeline fixed connection, just high-pressure liquid in the flexible high-pressure line can be transmitted to rotatory pipeline after fixed part and rotating part.
Preferably, in foretell existing normal position tubular well segmentation obstacles removing device, connecting device includes a connecting seat, be equipped with a through-hole that link up from top to bottom in the connecting seat, the connecting seat the upper end of through-hole with flexible high-pressure tube sealing connection, the connecting seat the lower extreme of through-hole is equipped with the bearing, the bearing includes inner circle, outer lane and sets up a plurality of balls by the holder spacing between inner circle, outer lane, the upper end of rotatory pipeline with the inner circle sealing fixed connection of bearing, the outer lane of bearing with connecting seat fixed connection.
Preferably, in the existing in-situ pipe well subsection obstacle clearing device, the flexible high-pressure pipe is driven by a winch to move up and down.
Preferably, in the existing in-situ pipe well segmented obstacle clearing device, the motor transmission mechanism comprises a motor and a worm, the motor drives the worm to rotate, the worm drives the rotating disc to rotate, and the worm and the rotating disc form a turbine and worm transmission pair.
The invention also discloses a segmented obstacle removing method for the existing in-situ pipe well, which comprises the following steps:
the method comprises the following steps that firstly, covering soil on the upper part of an in-situ pipe well is removed, so that the soil is exposed on the top of the in-situ pipe well;
step two, cutting the in-situ pipe well into a plurality of local pipe sections from bottom to top by utilizing the existing in-situ pipe well subsection obstacle clearing;
and thirdly, sequentially excavating local pipe sections from top to bottom by using a rotary drilling rig.
According to the technical scheme disclosed above, compared with the prior art, the invention has the following beneficial effects:
the existing in-situ pipe well segmented obstacle clearing device provided by the invention can move up and down in the in-situ pipe well along with the flexible high-pressure pipe through the shell, the water jet cutter head, the motor transmission device, the rotating disc, the rotating pipeline and the connecting device, therefore, the water cutter head can move to different depth positions of the in-situ pipe well, the booster pump is opened, after the water in the water storage tank is boosted by the booster pump, sequentially passes through a flexible high-pressure pipe, a connecting device and a rotary pipeline and then is sprayed by a water jet cutter head, high-pressure water cutting is carried out on the in-situ pipe well, so that the in-situ pipe well can be cut into a local pipe section which can be dug by a machine, the obstacle of the in-situ pipe well can be cleared, the device can avoid using corresponding equipment such as a large-scale vibration pile driver, a full-slewing drilling machine and the like, reduces the influence on the environment, is convenient, quick and safe to operate, and solves the problems of great peripheral environment influence, great production cost and the like in the process of removing underground obstacles.
Drawings
Fig. 1 is a schematic structural diagram of an existing in-situ pipe well segmented obstacle clearing device according to an embodiment of the invention;
FIG. 2 is a schematic view of a water jet scalpel head according to an embodiment of the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic structural diagram of a connecting device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a third step of an existing in-situ tubular well block clearing method according to an embodiment of the present invention.
In the figure: the drilling machine comprises a 1-in-situ pipe well, a 2-flexible high-pressure pipe, a 3-shell, a 4-water jet cutter head, a 5-motor transmission device, a 6-rotating disc, a 7-rotating pipeline, an 8-connecting device, an 81-connecting seat, an 82-bearing, a 9-travelling wheel, a 10-portable box body and an 11-rotary drilling rig.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. The technical contents and features of the present invention will be described in detail below with reference to the embodiments illustrated in the accompanying drawings. It is further noted that the drawings are in greatly simplified form and are not to precise scale, merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. For convenience of description, the directions of "up" and "down" described below are the same as the directions of "up" and "down" in the drawings, but this is not a limitation of the technical solution of the present invention.
Example one
Referring to fig. 1-5, the embodiment discloses an existing in-situ pipe well sectional obstacle clearing device, which includes a portable water cutting device for cutting an in-situ pipe well 1, the portable water cutting device includes a water storage tank, a booster pump, a flexible high-pressure pipe 2, a housing 3, a water knife head 4, a motor transmission device 5, a rotating disc 6, a rotating pipe 7, and a connecting device 8, one end of the flexible high-pressure pipe 2 is connected to the booster pump, the other end of the flexible high-pressure pipe 2 extends into the housing 3 and is connected to the upper end of the rotating pipe 7 through the connecting device 8, the lower end of the rotating pipe 7 is provided with the water knife head 4, the flexible high-pressure pipe 2 is fixedly connected to the connecting device 8, the rotating pipe 7 can rotate relative to the flexible high-pressure pipe 2, the motor transmission device 5 drives the rotating disc 6 to rotate, the rotating disc 6 is fixedly sleeved on the rotating pipeline 7, water in the water storage tank is sprayed out through the water knife head 4 after sequentially passing through the flexible high-pressure pipe 2, the connecting device 8 and the rotating pipeline 7 after being pressurized by the booster pump, and the shell 3, the water knife head 4, the motor transmission device 5, the rotating disc 6, the rotating pipeline 7 and the connecting device 8 can follow the flexible high-pressure pipe 2 to move up and down in the in-situ pipe well 1.
The existing normal position tubular well segmentation device of removing obstacles that this embodiment provided, through casing 3, water sword tool bit 4, motor drive 5, rolling disc 6, rotary pipeline 7 and connecting device 8 can follow flexible high-pressure pipe 2 reciprocate in the normal position tubular well 1, consequently, water sword tool bit 4 can move the different degree of depth positions of normal position tubular well 1, opens the booster pump, water in the water storage tank is behind the booster pump pressure boost, sprays through water sword tool bit 4 behind flexible high-pressure pipe 2, connecting device 8, rotary pipeline 7 in proper order and goes out, implements the high pressure water cutting to normal position tubular well 1 to can normal position tubular well 1 cut into a local pipeline section that can dig out with the machine to realize the removing obstacles of normal position tubular well 1.
In order to enable the water jet cutter head 4 installed on the shell 3 to stably walk along the axial direction of the in-situ pipe well 1 and facilitate cutting of the in-situ pipe well 1, preferably, in the existing in-situ pipe well subsection obstacle clearing device, the portable water cutting equipment further comprises walking wheels 9, the walking wheels 9 are respectively arranged on the periphery of the shell 3, and the shell 3 can walk up and down along the inner wall of the in-situ pipe well 1 through the walking wheels 9.
Preferably, in the above-mentioned existing in-situ tubular well segmentation obstacle clearing device, the connecting device 8 includes a connecting seat 81, be equipped with a through-hole that link up from top to bottom in the connecting seat 81, the connecting seat 8 the upper end of through-hole with flexible high-pressure pipe 2 sealing connection, the connecting seat 81 the lower extreme of through-hole is equipped with bearing 82, bearing 82 includes inner circle, outer lane and sets up a plurality of balls by the holder spacing between inner circle, outer lane, the upper end of rotary pipeline 7 with the inner circle sealing fixed connection of bearing, the outer lane of bearing with connecting seat 81 fixed connection.
Of course, the connecting device 8 can also be a universal device, similar to the principle of a fountain spinning nozzle. Specifically, the universal device includes fixed part and rotating part, the rotating part with fixed part coaxial coupling, just the rotating part can be relative the fixed part rotates, the fixed part with flexible high-pressure pipe 2 fixed connection, the rotating part with rotatory pipeline 7 fixed connection, just high-pressure liquid in the flexible high-pressure pipe 2 can be transmitted to rotatory pipeline 7 after fixed part and rotating part.
Preferably, in the existing in-situ pipe well subsection obstacle clearing device, the flexible high-pressure pipe 2 is driven by a winch to move up and down.
Preferably, in the existing in-situ pipe well segmented obstacle clearing device, the motor transmission mechanism comprises a motor and a worm, the motor drives the worm to rotate, the worm drives the rotating disc 6 to rotate, and the worm and the rotating disc 6 form a worm and gear transmission pair, so that power of an output shaft of the motor is transmitted to the rotating disc 6, and then the rotating pipeline 7 and the water knife head 4 installed on the rotating pipeline 7 are driven to rotate.
With continuing reference to fig. 1 to 5, the present invention also discloses a segmented obstacle removing method for an existing in-situ tubular well, which comprises the following steps:
firstly, removing the covering soil on the upper part of the in-situ pipe well 1 to expose the soil on the top of the in-situ pipe well 1;
step two, cutting the in-situ pipe well 1 into a plurality of local pipe sections from bottom to top by utilizing the existing in-situ pipe well subsection obstacle removal;
and step three, as shown in fig. 5, sequentially excavating local pipe sections from top to bottom by using the rotary drilling rig 10.
The invention provides a segmented obstacle clearing method for an existing in-situ pipe well, which is characterized in that the existing in-situ pipe well segmented obstacle clearing device is utilized to cut an in-situ pipe well 1 into a plurality of local pipe sections from bottom to top; the existing in-situ pipe well segmented obstacle clearing device is portable water cutting equipment, the weight of the existing in-situ pipe well segmented obstacle clearing device is less than 90 kilograms, and the existing in-situ pipe well segmented obstacle clearing device can be controlled by two persons, so that the flexibility and the portability of a water cutting system are greatly improved, and the existing in-situ pipe well segmented obstacle clearing device is not limited by a working environment; after the metal tube well is cut in sections, the sleeve of the rotary drilling rig is adopted for rotary drilling, the obstacles after the sections are drilled, and the length of the sections is suitable to be equal to the height of the sleeve in size. The invention has strong practicability and convenient construction operation. And removing the obstacles in sections by using a water jet cutting technology and then by digging the sleeve of the drilling machine in a rotating way. The construction process has little influence on the surrounding environment.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (8)
1. The existing in-situ pipe well segmented obstacle clearing device is characterized by comprising a portable water cutting device for cutting an in-situ pipe well, wherein the portable water cutting device comprises a water storage tank, a booster pump, a flexible high-pressure pipe, a shell, a water knife head, a motor transmission device, a rotary disc, a rotary pipeline and a connecting device, one end of the flexible high-pressure pipe is connected with the booster pump, the other end of the flexible high-pressure pipe extends into the shell and is connected with the upper end of the rotary pipeline through the connecting device, the lower end of the rotary pipeline is provided with the water knife head, the flexible high-pressure pipe is fixedly connected with the connecting device, the rotary pipeline can rotate relative to the flexible high-pressure pipe, the motor transmission device drives the rotary disc to rotate, the rotary disc is fixedly sleeved on the rotary pipeline, and water in the water storage tank is pressurized by the booster pump, the flexible high-pressure pipe is sequentially sprayed out through the water jet cutter head after passing through the flexible high-pressure pipe, the connecting device and the rotary pipeline, and the shell, the water jet cutter head, the motor transmission device, the rotating disc, the rotary pipeline and the connecting device can follow the flexible high-pressure pipe to move up and down in the in-situ pipe well.
2. The existing in-situ pipe well segmented obstacle clearing device as claimed in claim 1, wherein the portable water cutting equipment further comprises walking wheels, and the walking wheels are respectively arranged on the periphery of the shell, so that the shell can walk up and down along the inner wall of the in-situ pipe well through the walking wheels.
3. The existing in-situ tubular well block removing device as claimed in claim 1, wherein the connecting device is a universal device.
4. The existing in-situ tubular well segmented obstacle clearing device as claimed in claim 3, wherein the universal device comprises a fixed part and a rotating part, the rotating part is coaxially connected with the fixed part and can rotate relative to the fixed part, the fixed part is fixedly connected with the flexible high pressure pipe, the rotating part is fixedly connected with the rotating pipeline, and high pressure liquid in the flexible high pressure pipe can be transmitted to the rotating pipeline after passing through the fixed part and the rotating part.
5. The existing in-situ pipe well segmented obstacle clearing device as claimed in claim 1, wherein the connecting device comprises a connecting seat, a through hole penetrating up and down is arranged in the connecting seat, the upper end of the through hole of the connecting seat is connected with the flexible high-pressure pipe in a sealing manner, a bearing is arranged at the lower end of the through hole of the connecting seat, the bearing comprises an inner ring, an outer ring and a plurality of balls which are arranged between the inner ring and the outer ring and limited by a retainer, the upper end of the rotary pipeline is fixedly connected with the inner ring of the bearing in a sealing manner, and the outer ring of the bearing is fixedly connected with the connecting seat.
6. The existing in-situ pipe well block removing device according to claim 1, wherein the flexible high-pressure pipe is driven to move up and down by a winch.
7. The existing in-situ pipe well segmented obstacle clearing device as claimed in claim 1, wherein the motor transmission mechanism comprises a motor and a worm, the motor drives the worm to rotate, the worm drives the rotating disc to rotate, and the worm and the rotating disc form a worm gear and worm transmission pair.
8. The existing in-situ pipe well segmented obstacle removing method is characterized by comprising the following steps:
the method comprises the following steps that firstly, covering soil on the upper part of an in-situ pipe well is removed, so that the soil is exposed on the top of the in-situ pipe well;
step two, cutting the in-situ pipe well into a plurality of partial pipe sections from bottom to top by using the existing in-situ pipe well subsection obstacle clearing of any one of claims 1 to 7;
and thirdly, sequentially excavating local pipe sections from top to bottom by using a rotary drilling rig.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911130367.4A CN110792105A (en) | 2019-11-19 | 2019-11-19 | Existing in-situ pipe well segmented obstacle clearing method and device |
| PCT/CN2020/107257 WO2021098285A1 (en) | 2019-11-19 | 2020-08-06 | Method and apparatus for segmented obstacle removal of existing in-situ tube well |
| CH000609/2022A CH718235B1 (en) | 2019-11-19 | 2020-08-06 | Method and device for the segmented removal of an existing manhole. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911130367.4A CN110792105A (en) | 2019-11-19 | 2019-11-19 | Existing in-situ pipe well segmented obstacle clearing method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110792105A true CN110792105A (en) | 2020-02-14 |
Family
ID=69445194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911130367.4A Pending CN110792105A (en) | 2019-11-19 | 2019-11-19 | Existing in-situ pipe well segmented obstacle clearing method and device |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN110792105A (en) |
| CH (1) | CH718235B1 (en) |
| WO (1) | WO2021098285A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021098285A1 (en) * | 2019-11-19 | 2021-05-27 | 上海建工二建集团有限公司 | Method and apparatus for segmented obstacle removal of existing in-situ tube well |
| WO2021196649A1 (en) * | 2020-03-31 | 2021-10-07 | 浙江大学 | Jet-type in-situ soil sampler |
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| CN110792105A (en) * | 2019-11-19 | 2020-02-14 | 上海建工二建集团有限公司 | Existing in-situ pipe well segmented obstacle clearing method and device |
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- 2019-11-19 CN CN201911130367.4A patent/CN110792105A/en active Pending
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- 2020-08-06 CH CH000609/2022A patent/CH718235B1/en unknown
- 2020-08-06 WO PCT/CN2020/107257 patent/WO2021098285A1/en active Application Filing
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| CN106687242A (en) * | 2014-09-09 | 2017-05-17 | 弗洛迪姆有限公司 | Electrochemical well pipe cutting instrument |
| CN204893731U (en) * | 2015-06-19 | 2015-12-23 | 天津艾浮瑞特科技有限公司 | Passive water cutting machine of portable movable type |
| CN105673029A (en) * | 2016-03-30 | 2016-06-15 | 杨溢 | Water jet tunneling type shield tunneling machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021098285A1 (en) * | 2019-11-19 | 2021-05-27 | 上海建工二建集团有限公司 | Method and apparatus for segmented obstacle removal of existing in-situ tube well |
| WO2021196649A1 (en) * | 2020-03-31 | 2021-10-07 | 浙江大学 | Jet-type in-situ soil sampler |
Also Published As
| Publication number | Publication date |
|---|---|
| CH718235B1 (en) | 2023-07-31 |
| WO2021098285A1 (en) | 2021-05-27 |
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