CN115324091A - Bag type series plugging device and control method thereof - Google Patents
Bag type series plugging device and control method thereof Download PDFInfo
- Publication number
- CN115324091A CN115324091A CN202210929135.0A CN202210929135A CN115324091A CN 115324091 A CN115324091 A CN 115324091A CN 202210929135 A CN202210929135 A CN 202210929135A CN 115324091 A CN115324091 A CN 115324091A
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- annular
- grouting
- slip casting
- machine
- annular bag
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
Abstract
The invention provides a bag type series plugging device and a control method thereof, wherein the bag type series plugging device comprises a plurality of annular bag bodies, a grouting machine and an expansion water stop strip, wherein the annular bag bodies are sleeved on an underground engineering structure and are sequentially connected through a connector, the grouting machine is communicated with the annular bag bodies through a grouting pipe, the expansion water stop strip is wound on the underground engineering structure and is positioned above the annular bag bodies, a one-way valve which is opened only when slurry in the grouting pipe flows from the grouting machine to the annular bag bodies is arranged in the grouting pipe, the surface of each annular bag body is provided with a micro-seepage structure, and when viscous slurry is injected into the annular bag bodies through the grouting machine in a pressurizing manner, the viscous slurry seeps out of the micro-seepage structure. By adopting the technical scheme of the invention, underground water can be effectively pumped upwards along with the side wall of the well pipe or the underground engineering structure, and the construction safety is ensured.
Description
Technical Field
The invention relates to the field of constructional engineering, in particular to a bag type series plugging device and a control method thereof.
Background
In the excavation process of foundation pit earthwork, in order to reduce the water content of soil in the excavation range, facilitate the earthwork excavation or prevent the instability of slope release, the occurrence of running water, sand and gushing, a precipitation well is generally needed to be arranged to suck the groundwater in the excavated aquifer.
The conventional dewatering well or other underground engineering structures have the defects that underground water overflows upwards along with the side wall of a well pipe or a structure, and the construction safety is seriously damaged in the underground engineering construction process.
Disclosure of Invention
The invention aims to provide a bag type series plugging device capable of preventing underground water from flowing out along with underground engineering structures and a control method thereof.
The invention provides a bag type series plugging device which comprises a plurality of annular bag bodies and a grouting machine, wherein the annular bag bodies are sleeved on an underground engineering structure and are sequentially connected through a connector, the grouting machine is communicated with the annular bag bodies through a grouting pipe, the underground engineering structure and the annular bag bodies are sealed through an expansion water stop strip, a one-way valve which is opened only when slurry in the grouting pipe flows from the grouting machine to the annular bag bodies is arranged in the grouting pipe, the surface of each annular bag body is provided with a micro-seepage structure, and when viscous slurry is injected into the annular bag bodies through the grouting machine in a pressurizing mode, the viscous slurry seeps out of the micro-seepage structure.
In an embodiment of the present invention, a pressure sensor is disposed in a lowermost annular bladder of the plurality of annular bladders.
In the embodiment of the invention, the grouting machine is connected with the pressure sensor through a signal wire.
In the embodiment of the invention, the grouting pipe and the signal line are arranged close to the outer wall of an underground engineering structure.
In the embodiment of the invention, the grouting machine is provided with a pressure transmission monitoring meter, a flow monitoring meter and a flow accumulator.
In an embodiment of the present invention, the grouting pipe is connected to an uppermost annular bag of the underground construction.
In an embodiment of the present invention, a control method of the above-mentioned balloon type serial occlusion device is further provided, which includes:
when plugging operation is carried out, the grouting machine pressurizes and injects viscous slurry into the annular bag body, and detects the pressure P2 in the lowermost annular bag body in real time,
when P2/(P1 + rho gH) is less than or equal to 1, continuing grouting until one of the following conditions is met, and stopping grouting after maintaining grouting for a set time:
a: P2/(P1 + rho gH) > 1.1 and L/NV > 1;
b: P2/(P1 + ρ gH) > 1.2 and L/NV =1;
c: P2/(P1 + rho gH) > 1.3 and L/NV < 1;
wherein V is the volume of single annular utricule, and N is the quantity of annular utricule, and L is the slip casting volume, and rho is thick liquid density, and P1 is slip casting pressure, and H is the perpendicular distance of annular utricule bottom and slip casting machine of below.
Compared with the prior art, the bag type series plugging device provided by the invention has the advantages that when the underground engineering structure is constructed, the annular bag body and the underground engineering structure are buried into the stratum together, and the viscous slurry is injected into the annular bag body through the grouting pipe, so that the viscous slurry in the annular bag body permeates into the viscous soil, and the viscous soil around the underground engineering structure is reinforced to prevent water seepage.
Drawings
Fig. 1 is a schematic perspective view of a bladder-type tandem occlusion device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
As shown in fig. 1, in the embodiment of the present invention, a bag-type serial plugging device is provided, which includes a plurality of annular bag bodies 6 that are sleeved on an underground construction structure 3 and are sequentially connected through a connector 5, and a grouting machine 1 that is communicated with the plurality of annular bag bodies 6 through a grouting pipe 2, and the underground construction structure 3 and the plurality of annular bag bodies 6 are sealed by an expansion water stop strip 4. The grouting pipe 2 is provided with a check valve (not shown) that is opened only when the slurry in the grouting pipe 2 flows from the grouting machine 1 to the toroidal bladder 6. The annular capsule body 6 is provided with a micro-seepage structure on the surface, when viscous slurry is injected into the annular capsule body 6 through the grouting machine 1 in a pressurizing manner, the viscous slurry seeps out of the micro-seepage structure into the viscous soil around the underground engineering structure 3, and the viscous soil around the underground engineering structure 3 is reinforced to prevent water seepage.
The grouting pipe 2 and the signal line 8 are arranged close to the underground engineering building 1, a plurality of water stop belts 9 are arranged above the annular bag bodies 6 in an encircling mode on the grouting pipe 2, the signal line 8 and the underground engineering structure 3 and used for preventing leaked underground water from leaking to the ground surface through gaps among the grouting pipe 2, the signal line 8 and the underground engineering structure 3. The underground construction structure 3 may be a precipitation well or other structures, but the present invention is not limited thereto.
Further, a pressure sensor 7 is arranged in the lowermost one of the plurality of annular capsules 6, and the grouting machine 1 is connected with the pressure sensor 7 through a signal line 8. The grouting pipe 2 and the signal line 8 are arranged close to the outer wall of the underground engineering structure 3. The grouting pipe 2 is connected with an uppermost annular bag body 6 of the underground engineering structure 3.
And the grouting machine 1 is provided with a pressure transmission monitoring meter, a flow monitoring meter and a flow accumulator. The grouting machine 1 is used for injecting grout into the annular bag body 6 and monitoring the grouting process through a pressure transmission monitoring meter, a flow monitoring meter and a flow totalizer.
The implementation process of the bag-type serial plugging device according to the embodiment of the present invention is described below by taking the underground engineering building 3 as a dewatering well.
The annular bag type 6 is connected through the connector 5, and the annular bag type 6 is sleeved on the lower part of the well pipe 3 and fixed when the dewatering well is formed and is placed along with the well pipe 3.
Become well and end the back, carry out the slip casting to annular utricule 6 through slip casting machine 1, but annular utricule 6 is leakage material slip casting under certain pressure condition, can outwards leak when treating that first annular utricule 6 is full of the thick liquid can flow to second annular utricule 6 simultaneously, thick liquid can flow to third annular utricule 6 when thick liquid is filled up to second annular utricule 6, be equipped with pressure sensor 7 in the third annular utricule 6, the pressure value and the flow data of this pressure sensor transmission of accessible, learn whether the thick liquid is filled to saturate.
Further, the grouting amount can be checked through a flow totalizer on the grouting machine 1, and whether the annular bag body 6 is saturated or not can be determined through the grouting amount in a back-proof manner, so that whether grouting is continued or not is determined.
When plugging operation is carried out, the control process of the bag type serial plugging device is as follows:
the grouting machine pressurizes and injects viscous grout into the annular bag body, detects the pressure P2 in the lowermost annular bag body in real time,
when P2/(P1 + rho gH) is less than or equal to 1, continuing grouting until one of the following conditions is met, and stopping grouting after maintaining grouting for a set time:
a: P2/(P1 + rho gH) > 1.1 and L/NV > 1;
b: P2/(P1 + ρ gH) > 1.2 and L/NV =1;
c: P2/(P1 + rho gH) > 1.3 and L/NV < 1;
wherein V is the volume of single annular utricule, and N is the quantity of annular utricule, and L is the slip casting volume, and rho is thick liquid density, and P1 is slip casting pressure, and H is the perpendicular distance of annular utricule bottom and slip casting machine of below.
In summary, according to the bag-type tandem plugging device of the present invention, when the underground construction structure is constructed, the annular bag body is buried into the ground together with the underground construction structure, and the viscous slurry is injected into the annular bag body through the grouting pipe, so that the viscous slurry in the annular bag body permeates into the viscous soil, and the viscous soil around the underground construction structure is reinforced to prevent water seepage.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a shutoff device is established ties to pocket type, its characterized in that, establish at underground works structure and a plurality of annular utricules that connect gradually through the connector and with the slip casting machine that a plurality of annular utricules are linked together through the slip casting pipe, underground works structure with seal through the inflation sealing rod between the annular utricule, be equipped with the thick liquid in the slip casting pipe only and follow the slip casting machine to the check valve that opens when the annular utricule flows, annular utricule surface has the micro-filtration structure, when passing through the slip casting machine to when annular utricule pressurization is injected into sticky thick liquid, sticky thick liquid is followed ooze in the micro-filtration structure.
2. The tandem balloon occlusion device of claim 1, wherein a pressure sensor is disposed in a lowermost one of the plurality of toroidal balloons.
3. The tandem balloon occlusion device of claim 2, wherein the grouting machine is connected to the pressure sensor via a signal line.
4. The tandem bladder plugging device of claim 2, wherein the grout tube and the signal line are disposed proximate an exterior wall of an underground structure.
5. The bladder type tandem occlusion device of claim 1, wherein a pressure transmission monitoring meter, a flow monitoring meter and a flow totalizer are disposed on the grouting machine.
6. The tandem bladder plugging device of claim 1, wherein said grout tube is connected to an uppermost one of said annular bladders of said underground structure.
7. A method of controlling a balloon-type tandem occlusion device according to any of claims 1-6, comprising:
when plugging operation is carried out, the grouting machine pressurizes and injects viscous slurry into the annular bag body, the pressure P2 in the annular bag body at the lowest part is detected in real time,
when P2/(P1 + rho gH) is less than or equal to 1, continuing grouting until one of the following conditions is met, and stopping grouting after maintaining grouting for a set time:
a: P2/(P1 + rho gH) > 1.1 and L/NV > 1;
b: P2/(P1 + ρ gH) > 1.2 and L/NV =1;
c: P2/(P1 + rho gH) > 1.3 and L/NV < 1;
wherein V is the volume of single annular utricule, and N is the quantity of annular utricule, and L is the slip casting volume, and rho is thick liquid density, and P1 is slip casting pressure, and H is the perpendicular distance of annular utricule bottom and slip casting machine of below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210929135.0A CN115324091A (en) | 2022-08-03 | 2022-08-03 | Bag type series plugging device and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210929135.0A CN115324091A (en) | 2022-08-03 | 2022-08-03 | Bag type series plugging device and control method thereof |
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| CN115324091A true CN115324091A (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210929135.0A Pending CN115324091A (en) | 2022-08-03 | 2022-08-03 | Bag type series plugging device and control method thereof |
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| CN (1) | CN115324091A (en) |
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|---|---|---|---|---|
| KR100776304B1 (en) * | 2006-05-25 | 2007-11-16 | 정진교 | Direct punching simultaneous poruing equipment and grouting construction method |
| CN103485747A (en) * | 2013-09-23 | 2014-01-01 | 陕西煤业化工技术研究院有限责任公司 | Automatic pressure-adding borehole sealing device and method |
| CN103510501A (en) * | 2013-10-23 | 2014-01-15 | 天津大学 | Method for preventing blocking and water gushing in recharge well |
| KR101528524B1 (en) * | 2015-03-04 | 2015-06-12 | 김동세 | Grouting apparatus with double packer and Grouting method using the same |
| CN110159224A (en) * | 2019-05-17 | 2019-08-23 | 河南理工大学 | Three pouches block integral type hole sealing device and method for sealing |
| CN111058795A (en) * | 2019-12-27 | 2020-04-24 | 上海长凯岩土工程有限公司 | Recyclable bag type rapid well completion device and using method |
| CN112483149A (en) * | 2020-12-14 | 2021-03-12 | 兖州煤业股份有限公司 | Pressure expansion hole sealing capsule and corresponding high-pressure grouting anchor cable method |
| CN113153211A (en) * | 2021-04-08 | 2021-07-23 | 煤炭科学研究总院 | Two-plug two-injection hole sealing device and hole sealing method |
| CN213979010U (en) * | 2020-12-01 | 2021-08-17 | 上海渊丰地下工程技术有限公司 | Novel precipitation well structure |
| CN214423394U (en) * | 2020-12-01 | 2021-10-19 | 上海渊丰地下工程技术有限公司 | Dewatering well reinforced by annular capsule |
| CN113638398A (en) * | 2021-09-13 | 2021-11-12 | 天津大学 | Active dynamic control method for stress of bag type grouting soil body |
-
2022
- 2022-08-03 CN CN202210929135.0A patent/CN115324091A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100776304B1 (en) * | 2006-05-25 | 2007-11-16 | 정진교 | Direct punching simultaneous poruing equipment and grouting construction method |
| CN103485747A (en) * | 2013-09-23 | 2014-01-01 | 陕西煤业化工技术研究院有限责任公司 | Automatic pressure-adding borehole sealing device and method |
| CN103510501A (en) * | 2013-10-23 | 2014-01-15 | 天津大学 | Method for preventing blocking and water gushing in recharge well |
| KR101528524B1 (en) * | 2015-03-04 | 2015-06-12 | 김동세 | Grouting apparatus with double packer and Grouting method using the same |
| CN110159224A (en) * | 2019-05-17 | 2019-08-23 | 河南理工大学 | Three pouches block integral type hole sealing device and method for sealing |
| CN111058795A (en) * | 2019-12-27 | 2020-04-24 | 上海长凯岩土工程有限公司 | Recyclable bag type rapid well completion device and using method |
| CN213979010U (en) * | 2020-12-01 | 2021-08-17 | 上海渊丰地下工程技术有限公司 | Novel precipitation well structure |
| CN214423394U (en) * | 2020-12-01 | 2021-10-19 | 上海渊丰地下工程技术有限公司 | Dewatering well reinforced by annular capsule |
| CN112483149A (en) * | 2020-12-14 | 2021-03-12 | 兖州煤业股份有限公司 | Pressure expansion hole sealing capsule and corresponding high-pressure grouting anchor cable method |
| CN113153211A (en) * | 2021-04-08 | 2021-07-23 | 煤炭科学研究总院 | Two-plug two-injection hole sealing device and hole sealing method |
| CN113638398A (en) * | 2021-09-13 | 2021-11-12 | 天津大学 | Active dynamic control method for stress of bag type grouting soil body |
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Address after: 201600 Building 1, 1128 Wenhui Road, Songjiang District, Shanghai Applicant after: SHANGHAI YUANFENG UNDERGROUND ENGINEERING TECHNOLOGY Co.,Ltd. Address before: Room 307, building 16, 4588 Honghai Road, Sanxing Town, Chongming District, Shanghai 202152 Applicant before: SHANGHAI YUANFENG UNDERGROUND ENGINEERING TECHNOLOGY Co.,Ltd. |
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