CN115653495B - Super-large diameter steel sleeve vertical sinking combined horizontal drilling coring and obstacle removing construction method - Google Patents
Super-large diameter steel sleeve vertical sinking combined horizontal drilling coring and obstacle removing construction method Download PDFInfo
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- CN115653495B CN115653495B CN202211498257.5A CN202211498257A CN115653495B CN 115653495 B CN115653495 B CN 115653495B CN 202211498257 A CN202211498257 A CN 202211498257A CN 115653495 B CN115653495 B CN 115653495B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The utility model relates to the technical field of building construction, in particular to a coring and obstacle-removing construction method combining a vertical immersed tube of an oversized-diameter steel sleeve with a horizontal drill; the method specifically comprises the following steps: hardening a field, drilling holes, taking out soil, preparing equipment, horizontally drilling, completing the breaking of hole sites of piles (walls), taking out construction wastes generated in the breaking process, pulling out a steel sleeve upwards, backfilling cement soil, performing drilling operation on the next hole site, completing the breaking of the next hole site, taking out the construction wastes generated in the breaking process, repeating until the breaking of all the hole sites is completed, taking out all the construction wastes, and grouting and reinforcing the backfilled cement soil hole sites; the utility model realizes the efficient and accurate obstacle clearance of the underground of the existing subway by combining the ultra-large diameter steel sleeve vertical immersed tube with the horizontal drill coring.
Description
Technical Field
The utility model relates to the technical field of building construction, in particular to a coring and obstacle-removing construction method combining a vertical immersed tube with an oversized-diameter steel sleeve with a horizontal drill.
Background
With the rapid development of the economic society and the remarkable enhancement of comprehensive national force of China, the living standard of urban and rural residents is remarkably improved, and urban infrastructure is already a quality crossing. When a new subway passes through a built subway station, a shield machine is required to successfully pass through a pile (wall) structure at the lower part of the existing subway station, and a guard pile (wall) in the diameter range of a shield tunnel is required to be removed, so that the engineering is deep, the depth is often more than 20m, the area of a clearance hole is large, and because the geological condition is complex at the deep place of the ground, sandy silt and silt powder clay are rich in underground water and pressure-bearing water, and the obstacle is closely adjacent to the existing subway main structure, the existing subway main structure is easily damaged by adopting a general clearance method, and in addition, when the clearance construction is carried out, the manual hole (well) operation is not allowed under the premise that the safety cannot be ensured, and if the thought of firstly making a foundation pit and then clearing the obstacle is adopted, the construction period is long, and the construction cost is high. Therefore, how to clear the obstacle by a high-efficiency and accurate construction method becomes a technical problem of the engineering construction.
Disclosure of Invention
The utility model aims to provide a construction method for high-efficiency and accurate obstacle-removing construction of underground of the existing subway.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the method for removing the obstacle by combining the ultra-large diameter steel sleeve and the vertical immersed tube with the horizontal drill comprises the following steps:
1) Leveling and hardening the ground, and manufacturing a positioning guide wall;
2) The sleeve drilling machine is positioned, a steel sleeve is put in, and soil sampling pore-forming operation is carried out in the sleeve;
3) Hoisting horizontal drilling equipment A to a designated position in the steel sleeve by using a crane;
4) Performing horizontal drilling operation by using horizontal drilling equipment A to finish the breaking of the first (group of) hole sites;
5) Lifting out the horizontal drilling equipment A, and taking out the construction waste generated in the breaking process;
6) Pulling out the steel sleeve upwards, and simultaneously backfilling;
7) The sleeve drilling machine is positioned, a steel sleeve is put in, and soil sampling pore-forming operation is carried out in the sleeve;
8) Hoisting horizontal drilling equipment A to a designated position in the steel sleeve by using a crane;
9) Performing horizontal drilling operation by using horizontal drilling equipment A to finish the breaking of the next (group of) hole sites;
10 Hanging out the horizontal drilling equipment A, and taking out the construction waste generated in the breaking process;
11 Pulling out the steel sleeve upwards and backfilling at the same time;
12 Repeating the steps 7) to 11) until the breaking of all hole sites is completed and all construction wastes are taken out;
13 Removing the horizontal drilling equipment A and the crane, and grouting and reinforcing the backfill hole site.
Preferably, it is: and 2) putting a plurality of sections of steel sleeves according to the underground construction height, wherein the sections of steel sleeves are mutually connected in a male-female mode.
Preferably, it is: and 2) forming a preformed hole on the side wall of the first section of steel sleeve put in the step 2).
Preferably, it is: the horizontal drilling equipment A in the step 3) comprises a horizontal drilling machine, a tunneling pipe is arranged in the middle of the horizontal drilling machine, one end of the tunneling pipe is connected with a tunneling pipe recovery oil cylinder, a tunneling pipe recovery standby device is arranged beside the tunneling pipe recovery oil cylinder, the tunneling pipe recovery standby device is connected with the tunneling pipe, and a guide bracket is arranged outside the horizontal drilling machine.
Preferably, it is: the horizontal drilling equipment A in the step 3) comprises a guide support, a slide box is arranged in the guide support, a telescopic oil cylinder is arranged on one side of the slide box, a drilling tool connector is arranged on the other side of the slide box, the drilling tool connector is connected with a tunneling pipe, a power device connected with the drilling tool connector is arranged in the slide box, a recovery device is further connected to the guide support, and the recovery device is connected with the slide box.
Preferably, it is: the power device comprises a motor and a gear box connected with the motor, wherein the gear box is connected with a drilling tool connector.
Preferably, it is: the steel sleeve inner wall is provided with the guide rail, guide rail and guide bracket four angles gomphosis.
Preferably, it is: the hydraulic drill further comprises a hydraulic working station, wherein an oil pipe on the hydraulic working station is connected to the hydraulic oil pipe group reel and is further connected with the horizontal drill through a hydraulic oil pipe group guide wheel.
Preferably, it is: the horizontal drilling operation is operated in a gridding mode.
The beneficial technical effects of the utility model are as follows:
(1) during obstacle clearing, obstacles such as piles (walls) and the like are not required to be cleared downwards from the ground only in a fixed-point manner in a range affecting the tunneling of the shield machine, so that the existing subway station main body cannot be damaged.
(2) During construction, all operations are completed on the ground, the degree of mechanization is high, manual hole descending (well) is not needed, and the safety of operators is ensured.
(3) The steel sleeve wall protector can be suitable for all stratum, and the obstacle clearing construction drilling machine can operate underwater and is not influenced by groundwater.
(4) The obstacle clearance method adopts gridding operation, can realize single-hole operation and multi-hole operation, is flexible and various, and has high obstacle clearance efficiency.
(5) The obstacle clearing method has the advantages of strong operability, high construction efficiency and relatively high speed, and can shorten the construction period.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a construction flow chart of the present utility model;
FIG. 2 is a schematic view of the structure of the present utility model in construction;
FIG. 3 is a schematic view (front view) showing a retreating state of a ripping pipe according to embodiment 1 of the present utility model;
FIG. 4 is a schematic view (top view) showing a retreating state of a ripping pipe according to embodiment 1 of the present utility model;
FIG. 5 is a schematic diagram of a borehole meshing operation in accordance with the present utility model;
FIG. 6 is a schematic view (plan view) of the structure of the portion A in embodiment 2 of the present utility model;
fig. 7 is a schematic view (front view) of the structure of the a part in embodiment 2 of the present utility model;
fig. 8 is a schematic diagram (front view) of the structure of the portion a in embodiment 3 of the present utility model.
Wherein: the hydraulic oil pipe group guide wheel 1, the hydraulic oil pipe group reel 2, the auxiliary crane 3, the recovery standby device for 4 tunneling pipes, the full-casing drilling machine 5, the hydraulic working station 6, the crane 7, the steel casing 8, the horizontal drilling machine 9, the recovery cylinder for 10 tunneling pipes, the tunneling pipes 11, the guide frame 12, the guide rail 13, the reserved hole 14, the slide box 15, the telescopic cylinder 16, the drilling tool connector 17, the power device 18, the recovery device 19, the motor 181 and the gear box 182.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1:
as shown in figures 1-5, the coring and obstacle-removing construction method for the vertical immersed tube combined with the horizontal drill of the oversized-diameter steel sleeve comprises the following steps of:
1) Leveling and hardening the ground, and manufacturing a positioning guide wall;
2) The casing drilling machine is in place, a steel casing 8 is put in, and soil sampling pore-forming operation is carried out in the pipe, one or more sections of steel casings 8 are put in according to the underground construction height in the step, the sections of steel casings 8 are mutually connected in a male-female mode, and a reserved hole 14 is formed in the side wall of a first section of steel casing in the put sections of steel casings 8 and is used for tunneling of the horizontal drilling machine 9 in the subsequent step;
3) Hoisting horizontal drilling equipment A to a designated position in a steel sleeve by using a crane, wherein the horizontal drilling equipment A comprises a horizontal drilling machine 9, a tunneling pipe 11 is arranged in the middle of the horizontal drilling machine 9, one end of the tunneling pipe 11 is connected with a tunneling pipe recovery cylinder 10, a tunneling pipe recovery standby device 4 is arranged beside the tunneling pipe recovery cylinder 10, the tunneling pipe recovery standby device 4 is connected with the tunneling pipe 11, a guide bracket 12 is arranged outside the horizontal drilling machine 9, a guide rail 13 is arranged on the inner wall of the steel sleeve 8, the guide rail 13 is embedded with four corners of the guide bracket 12, a hydraulic workstation 6 is further arranged on the ground, and an oil pipe on the hydraulic workstation 6 is connected to a hydraulic oil pipe group reel 2 and is further connected with the horizontal drilling machine 9 through a hydraulic oil pipe group guide wheel 1;
4) Performing horizontal drilling operation by using horizontal drilling equipment A to finish the breaking of the first (group of) hole sites;
5) Lifting out the horizontal drilling equipment A, and taking out the construction waste generated in the breaking process;
6) Pulling out the steel sleeve upwards, and simultaneously backfilling;
7) The sleeve drilling machine is positioned, a steel sleeve is put in, and soil sampling pore-forming operation is carried out in the sleeve;
8) Hoisting horizontal drilling equipment A to a designated position in the steel sleeve by using a crane;
9) Performing horizontal drilling operation by using horizontal drilling equipment A to finish the breaking of the next (group of) hole sites;
10 Hanging out the horizontal drilling equipment A, and taking out the construction waste generated in the breaking process;
11 Pulling out the steel sleeve upwards and backfilling at the same time;
12 Repeating the steps 7) to 11) until the breaking of all hole sites is completed and all construction wastes are taken out;
13 Removing the horizontal drilling equipment A and the crane, and grouting and reinforcing the backfill hole site.
The device in this example 1 works on the principle: according to the utility model, the horizontal drilling machine 9 is preferably a full-rotation drilling machine, during construction operation, the crane 7 and the auxiliary crane 3 are in place, the auxiliary crane 3 lifts the hydraulic oil pipe group guide wheel 1 in place, an oil pipe on the hydraulic workstation 6 is connected to the hydraulic oil pipe group reel 2 and is further connected with the horizontal drilling machine 9 through the hydraulic oil pipe group guide wheel 1, a tunneling pipe 11 is installed in the horizontal drilling machine 9, the full-sleeve drilling machine 5 is used for installing the steel sleeve 8 in place, the crane 7 lifts the horizontal drilling machine 9 together with the guide frame 12 into the steel sleeve, the guide frame 12 slides downwards along the guide rail 13 until a specified station is reached, the hydraulic workstation 6 controls the tunneling pipe recovery cylinder 10 to stretch out and draw back, the barriers such as piles (walls) are opened, if the tunneling pipe recovery cylinder 10 breaks down, the tunneling pipe recovery backup device 4 is started to control the tunneling pipe 11, the blocking of the barriers such as the piles (walls) is avoided, the tunneling pipe recovery backup device 4 preferably adopts a wire rope and pulley combined mode, one end of the wire rope is connected to the tunneling pipe 11, one end of the wire rope is placed on the steel sleeve 11, the horizontal drilling machine is lifted by the crane 7 after construction operation is completed, and the horizontal drilling machine 9 can be recovered.
Example 2:
as shown in fig. 1, 2 and 5-7, the coring and obstacle-removing construction method for combining a vertical immersed tube with an oversized-diameter steel sleeve with a horizontal drill specifically comprises the following steps:
1) Leveling and hardening the ground, and manufacturing a positioning guide wall;
2) The casing drilling machine is in place, a steel casing 8 is put in, and soil sampling pore-forming operation is carried out in the pipe, one or more sections of steel casings 8 are put in according to the underground construction height in the step, the sections of steel casings 8 are mutually connected in a male-female mode, a reserved hole 14 is formed in the side wall of a first section of steel casing in the put sections of steel casings 8, and the reserved hole is used for tunneling when a tunneling pipe 11 works in the subsequent step;
3) Hoist horizontal drilling equipment A to the intraductal appointed position of steel casing with the crane, step 3) horizontal drilling equipment A includes guide bracket 12, guide bracket 12 internally mounted has slide case 15, telescopic cylinder 16 is installed to slide case 15 one side, and drilling tool connector 17 is installed to the opposite side, drilling tool connector 17 is connected with tunnelling pipe 11, install the power device 18 who is connected with drilling tool connector 17 in the slide case 15, still be connected with recovery unit 19 on the guide bracket 12, recovery unit 19 is connected with slide case 15.
The power unit 18 comprises a motor 181 and a gear box 182 connected to the motor 181, the gear box 182 being connected to the drill connector 17 for controlling the rotational movement of the drill connector 17.
The guide bracket 12 is also connected with a recovery device 19, the recovery device 19 is connected with the slide box 15, the recovery device 19 comprises a steel wire rope and a pulley, the steel wire rope is connected with the slide box 15 through the pulley on the guide bracket 12, and the other end of the steel wire rope is arranged on the surface outside the steel sleeve, so that when the telescopic oil cylinder 16 fails and cannot retract, the recovery device 19 is used for recovering the slide box 15, and the tunneling tube 11 is prevented from being blocked outside the reserved hole 14.
4) Performing horizontal drilling operation by using horizontal drilling equipment A to finish the breaking of the first (group of) hole sites;
5) Lifting out the horizontal drilling equipment A, and taking out the construction waste generated in the breaking process;
6) Pulling out the steel sleeve upwards, and simultaneously backfilling;
7) The sleeve drilling machine is positioned, a steel sleeve is put in, and soil sampling pore-forming operation is carried out in the sleeve;
8) Hoisting horizontal drilling equipment A to a designated position in the steel sleeve by using a crane;
9) Performing horizontal drilling operation by using horizontal drilling equipment A to finish the breaking of the next (group of) hole sites;
10 Hanging out the horizontal drilling equipment A, and taking out the construction waste generated in the breaking process;
11 Pulling out the steel sleeve upwards and backfilling at the same time;
12 Repeating the steps 7) to 11) until the breaking of all hole sites is completed and all construction wastes are taken out;
13 Removing the horizontal drilling equipment A and the crane, and grouting and reinforcing the backfill hole site.
Example 3:
as shown in fig. 1, 2, 5-6 and 8, the difference between the present embodiment and embodiment 2 is that the guiding rack 2 and its internal structure are provided with 2 groups in this embodiment, and when the device of this embodiment is constructed, the simultaneous double-hole obstacle clearing operation can be realized.
It should be noted that the present utility model is not limited to single-hole operation and double-hole operation, and may be single-hole operation, double-hole operation or multi-hole operation depending on the environment and construction requirements of a specific construction site operation. When the porous operation is adopted, a plurality of groups of guide brackets 2 and the internal structures thereof in the utility model are repeatedly arranged. The number of tunnelling pipes 11 corresponds exactly to the number of preformed holes 14 in the steel casing 8.
Working principles of the present utility model in examples 2 and 3: the telescopic oil cylinder 16 and the power device 18 are connected with a hydraulic working station on the external ground, the hydraulic working station provides power, the ground construction device is in place during construction operation, the full casing drilling machine is used for installing the steel casing 8 at an underground designated position, and a reserved hole 14 is reserved on the side wall of the lowest side of the steel casing 8; the crane lifts the guide bracket 12 to the appointed position of the steel sleeve 8 along the guide rail 13 on the inner side of the steel sleeve 8, at the moment, the tunneling tube 11 is parallel to the reserved hole 14, a hydraulic working station is started, the telescopic oil cylinder 16 is controlled to push the slide box 15 to move forwards, the power device 18 in the slide box 15 is started, the tunneling tube 11 is driven to rotate forwards through the drilling tool connector 17, the obstacle clearing operation is carried out on a pile (wall), after the operation is completed, the telescopic oil cylinder 16 drives the slide box 15 to retract, the operation construction is repeated after the next appointed position is moved, and after all the obstacle clearing operations are completed, the crane lifts the guide bracket 12, so that the obstacle clearing operation is completed.
According to the utility model, the drilling operation is performed according to the gridding operation, and referring to fig. 5, firstly, holes to be drilled on piles (walls) are positioned, then the holes to be drilled and the size of a tunneling pipe are equally divided into a plurality of round holes which are arranged horizontally and vertically, every two adjacent round holes are intersected or tangential, when in construction, according to the longitudinal direction, the holes in one row are firstly broken, then the holes in the next row are broken, and the holes are sequentially broken until all the holes are broken.
The construction method is used for removing obstacles only in a fixed point in a range where the tunneling of the shield machine is affected, and obstacles (obstacles) such as piles (walls) and the like do not need to be removed downwards from the ground, so that the existing subway station main body cannot be damaged.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (7)
1. The utility model provides a vertical immersed tube of super large diameter steel casing combines horizontal drilling to get core and removes barrier building method which characterized in that: the method specifically comprises the following steps:
1) Leveling and hardening the ground, and manufacturing a positioning guide wall;
2) The casing drilling machine is in place, one or more sections of steel casings are put in according to the underground construction height, the sections of steel casings are connected in a male-female mode, a reserved hole (14) is formed in the side wall of the first section of steel casing, and soil sampling and pore forming operation in the pipe are carried out;
3) Hoisting horizontal drilling equipment A to a designated position in the steel sleeve by using a crane;
4) Performing horizontal drilling operation by using horizontal drilling equipment A to finish breaking of a first hole site;
5) Lifting out the horizontal drilling equipment A, and taking out the construction waste generated in the breaking process;
6) Pulling out the steel sleeve upwards, and simultaneously backfilling;
7) The sleeve drilling machine is positioned, a steel sleeve is put in, and soil sampling pore-forming operation is carried out in the sleeve;
8) Hoisting horizontal drilling equipment A to a designated position in the steel sleeve by using a crane;
9) Performing horizontal drilling operation by using horizontal drilling equipment A to finish the breaking of the next hole site;
10 Hanging out the horizontal drilling equipment A, and taking out the construction waste generated in the breaking process;
11 Pulling out the steel sleeve upwards and backfilling at the same time;
12 Repeating the steps 7) to 11) until the breaking of all hole sites is completed and all construction wastes are taken out;
13 Removing the horizontal drilling equipment A and the crane, and grouting and reinforcing the backfill hole site.
2. The oversized steel cannula vertical immersed tube combined horizontal drilling coring and obstacle clearing construction method as defined in claim 1, wherein the method comprises the following steps of: the horizontal drilling equipment A in the step 3) comprises a horizontal drilling machine (9), a tunneling pipe (11) is arranged in the middle of the horizontal drilling machine (9), one end of the tunneling pipe (11) is connected with a tunneling pipe recovery cylinder (10), a tunneling pipe recovery standby device (4) is arranged beside the tunneling pipe recovery cylinder (10), the tunneling pipe recovery standby device (4) is connected with the tunneling pipe (11), and a guide bracket (12) is arranged outside the horizontal drilling machine (9).
3. The oversized steel cannula vertical immersed tube combined horizontal drilling coring and obstacle clearing construction method as defined in claim 1, wherein the method comprises the following steps of: the horizontal drilling equipment A in the step 3) comprises a guide support (12), a slide box (15) is arranged in the guide support (12), a telescopic oil cylinder (16) is arranged on one side of the slide box (15), a drilling tool connector (17) is arranged on the other side of the slide box, the drilling tool connector (17) is connected with a tunneling pipe (11), a power device (18) connected with the drilling tool connector (17) is arranged in the slide box (15), a recovery device (19) is further connected to the guide support (12), and the recovery device (19) is connected with the slide box (15).
4. The oversized steel cannula vertical immersed tube combined horizontal drilling coring and obstacle clearing method as recited in claim 3, wherein the method comprises the following steps: the power unit (18) comprises a motor (181) and a gear box (182) connected with the motor (181), and the gear box (182) is connected with the drilling tool connector (17).
5. The oversized steel cannula vertical immersed tube combined horizontal drilling coring and obstacle clearing construction method as recited in claim 2, wherein the method comprises the following steps: the inner wall of the steel sleeve (8) is provided with a guide rail (13), and the guide rail (13) is embedded with four corners of the guide bracket (12).
6. The oversized steel cannula vertical immersed tube combined horizontal drilling coring and obstacle clearing construction method as defined in claim 5, wherein the method comprises the following steps of: the hydraulic drill further comprises a hydraulic working station (6), wherein an oil pipe on the hydraulic working station (6) is connected to the hydraulic oil pipe group reel (2) and is further connected with the horizontal drilling machine (9) through the hydraulic oil pipe group guide wheel (1).
7. The oversized steel cannula vertical immersed tube combined horizontal drilling coring and obstacle clearing construction method as defined in claim 1, wherein the method comprises the following steps of: the horizontal drilling operation is operated in a gridding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211498257.5A CN115653495B (en) | 2022-11-28 | 2022-11-28 | Super-large diameter steel sleeve vertical sinking combined horizontal drilling coring and obstacle removing construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211498257.5A CN115653495B (en) | 2022-11-28 | 2022-11-28 | Super-large diameter steel sleeve vertical sinking combined horizontal drilling coring and obstacle removing construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115653495A CN115653495A (en) | 2023-01-31 |
| CN115653495B true CN115653495B (en) | 2023-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211498257.5A Active CN115653495B (en) | 2022-11-28 | 2022-11-28 | Super-large diameter steel sleeve vertical sinking combined horizontal drilling coring and obstacle removing construction method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001146746A (en) * | 1999-11-19 | 2001-05-29 | Marutoku Kigyo:Kk | Pull-out method for existing pile, and drilling casing to be used therefor |
| KR100821493B1 (en) * | 2007-11-27 | 2008-04-14 | 송명환 | An automatic core drill device |
| CN101761083A (en) * | 2008-12-24 | 2010-06-30 | 上海市基础工程公司 | Underground continuous wall obstacle clearing construction method for traversing ultra-thick obstacle |
| CN106761792A (en) * | 2017-01-20 | 2017-05-31 | 武汉市市政建设集团有限公司 | A kind of full-sleeve full-rotation drill sleeve and shield cutter preceding object thing sweep-out method |
| CN108868676A (en) * | 2018-05-31 | 2018-11-23 | 中国石油集团长城钻探工程有限公司 | It is a kind of cross casing penetrate side-wall coring tool |
| CN214836364U (en) * | 2021-01-07 | 2021-11-23 | 中铁十二局集团建筑安装工程有限公司 | Tunneling and dumping machine for obstacle clearing of full-rotation casing drill |
| CN114108652A (en) * | 2021-12-06 | 2022-03-01 | 中交第四公路工程局有限公司 | Barrier-removing and pile-forming integrated construction method for foundation pit support structure containing confined water layer |
-
2022
- 2022-11-28 CN CN202211498257.5A patent/CN115653495B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001146746A (en) * | 1999-11-19 | 2001-05-29 | Marutoku Kigyo:Kk | Pull-out method for existing pile, and drilling casing to be used therefor |
| KR100821493B1 (en) * | 2007-11-27 | 2008-04-14 | 송명환 | An automatic core drill device |
| CN101761083A (en) * | 2008-12-24 | 2010-06-30 | 上海市基础工程公司 | Underground continuous wall obstacle clearing construction method for traversing ultra-thick obstacle |
| CN106761792A (en) * | 2017-01-20 | 2017-05-31 | 武汉市市政建设集团有限公司 | A kind of full-sleeve full-rotation drill sleeve and shield cutter preceding object thing sweep-out method |
| CN108868676A (en) * | 2018-05-31 | 2018-11-23 | 中国石油集团长城钻探工程有限公司 | It is a kind of cross casing penetrate side-wall coring tool |
| CN214836364U (en) * | 2021-01-07 | 2021-11-23 | 中铁十二局集团建筑安装工程有限公司 | Tunneling and dumping machine for obstacle clearing of full-rotation casing drill |
| CN114108652A (en) * | 2021-12-06 | 2022-03-01 | 中交第四公路工程局有限公司 | Barrier-removing and pile-forming integrated construction method for foundation pit support structure containing confined water layer |
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|---|---|
| CN115653495A (en) | 2023-01-31 |
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