CN110761833A - Large and small pipe partial pressure type cavity grouting construction method - Google Patents
Large and small pipe partial pressure type cavity grouting construction method Download PDFInfo
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- CN110761833A CN110761833A CN201911031741.5A CN201911031741A CN110761833A CN 110761833 A CN110761833 A CN 110761833A CN 201911031741 A CN201911031741 A CN 201911031741A CN 110761833 A CN110761833 A CN 110761833A
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- grouting
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- 238000010276 construction Methods 0.000 title claims abstract description 14
- 239000011440 grout Substances 0.000 claims abstract description 8
- 239000002002 slurry Substances 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 description 4
- 238000007569 slipcasting Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/06—Filling-up mechanically
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a pressure-dividing cavity grouting construction method for large and small pipes, which adopts three times of grouting for the large pipe and the small pipe; grouting for the first time: grouting at low pressure through the large pipe, wherein the pressure of the grouting is P1, and filling the cavity with the grout from the large pipe; and (3) grouting for the second time: grouting in a large pipe at medium pressure, wherein the pressure of the grouting is P2, and further filling the cavity and filling gaps of loose fillers by the grout from the large pipe to gradually form a closed space; grouting for the third time: grouting at high pressure through a small pipe, wherein the pressure of the grouting is P3, and filling cracks around the cavity with slurry from the large pipe; wherein, P1< P2< P3. According to the invention, the large pipe and the small pipe are adopted for three times of grouting, so that the double grouting of large flow and small flow is realized, the grouting efficiency is improved, and the construction period is saved.
Description
Technical Field
The invention relates to the field of cavity grouting, in particular to a large and small pipe partial pressure type cavity grouting construction method.
Background
At present, the traditional karst cavities or goafs are filled with cement paste, sleeve valve pipes or DN20 grouting pipes are mostly adopted, and the grouting diameter is 20 mm. And 2 grouting pipes with the diameter of 20mm are adopted for secondary low-pressure grouting during the exposed cavity drilling. The construction method can achieve certain effect under the working condition of filling pure cavities or semi-filled cavities. For the full-filling or partial-filling or loose or cracked rock cracks around the hole, due to the influence of the on-way resistance, the slurry is solidified or the grouting pipe is blocked, the slurry is difficult to flow to the distant place and the peripheral cracks due to insufficient pressure, and the grouting pipe is small, small in grouting amount and low in efficiency.
Disclosure of Invention
The invention aims to provide a high-efficiency large and small pipe partial pressure type cavity grouting construction method with a good grouting effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
a big pipe and small pipe partial pressure type cavity grouting construction method adopts three times of grouting for a big pipe and a small pipe;
grouting for the first time: grouting at low pressure through the large pipe, wherein the pressure of the grouting is P1, and filling the cavity with the grout from the large pipe;
and (3) grouting for the second time: grouting in a large pipe at medium pressure, wherein the pressure of the grouting is P2, and further filling the cavity and filling gaps of loose fillers by the grout from the large pipe to gradually form a closed space;
grouting for the third time: grouting at high pressure through a small pipe, wherein the pressure of the grouting is P3, and filling cracks around the cavity with slurry from the large pipe;
wherein, P1< P2< P3.
The pipe diameter of the large pipe is DN40-DN50, and the pipe diameter of the small pipe is DN 20.
Wherein, P1 is more than or equal to 0.2MPa and less than or equal to 1MPa, P2 is more than or equal to 0.2MPa and less than or equal to 1MPa, and P3 is more than or equal to 0.2MPa and less than or equal to 1 MPa.
By adopting the technical scheme, the invention has the following beneficial effects:
1. the large pipe and the small pipe are adopted for three times of grouting, so that double grouting of large flow and small flow is realized, the grouting efficiency is improved, and the construction period is saved;
2. the large pipe and the small pipe are used for partial pressure grouting, the grouting flow and the grouting pressure are controlled, the grouting pressure is gradually increased, and a better grouting effect is achieved.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and the detailed description;
FIG. 1 is a schematic view of a first slip casting according to the present invention;
FIG. 2 is a schematic view of a second slip casting according to the present invention;
fig. 3 is a schematic view of a third slip casting according to the present invention.
Detailed Description
As shown in one of fig. 1-3, the present invention relates to a partial pressure grouting construction method for large and small pipes in a cavity, wherein the grouting is performed for three times by using large pipes and small pipes, the pipe diameter of the large pipe is DN40-DN50, and the pipe diameter of the small pipe is DN 20;
grouting for the first time: grouting at low pressure through the large pipe, wherein the pressure of the grouting is P1, and filling the cavity with the grout from the large pipe;
and (3) grouting for the second time: grouting in a large pipe at medium pressure, wherein the pressure of the grouting is P2, and further filling the cavity and filling gaps of loose fillers by the grout from the large pipe to gradually form a closed space;
grouting for the third time: grouting at high pressure through a small pipe, wherein the pressure of the grouting is P3, and filling cracks around the cavity with slurry from the large pipe;
wherein P1 is more than P2 and more than P3, P1 is more than or equal to 0.2MPa and less than or equal to 1MPa, P2 is more than or equal to 0.2MPa and less than or equal to 1MPa, and P3 is more than or equal to 0.2MPa and less than or equal to 1 MPa. In specific application, for example, P1 is 0.2MPa, P2 is 0.5 MPa, and P3 is 1 MPa.
According to the invention, the large pipe and the small pipe are adopted for three times of grouting, so that double grouting of large flow and small flow is realized, the grouting efficiency is improved, and the construction period is saved; in addition, the large and small pipes perform partial pressure grouting, the grouting flow and the grouting pressure are controlled, the grouting pressure is gradually improved, and a better grouting effect is achieved.
While the invention has been described in connection with the above embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, which are illustrative and not restrictive, and that those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (3)
1. A big and small pipe partial pressure type cavity grouting construction method is characterized in that: grouting is carried out on a large pipe and a small pipe for three times;
grouting for the first time: grouting at low pressure through the large pipe, wherein the pressure of the grouting is P1, and filling the cavity with the grout from the large pipe;
and (3) grouting for the second time: grouting in a large pipe at medium pressure, wherein the pressure of the grouting is P2, and further filling the cavity and filling gaps of loose fillers by the grout from the large pipe to gradually form a closed space;
grouting for the third time: grouting at high pressure through a small pipe, wherein the pressure of the grouting is P3, and filling cracks around the cavity with slurry from the large pipe;
wherein, P1< P2< P3.
2. The partial pressure type cavity grouting construction method for the large and small pipes according to claim 1, characterized in that: the pipe diameter of the large pipe is DN40-DN50, and the pipe diameter of the small pipe is DN 20.
3. The partial pressure type cavity grouting construction method for the large and small pipes according to claim 1, characterized in that: wherein, P1 is more than or equal to 0.2MPa and less than or equal to 1MPa, P2 is more than or equal to 0.2MPa and less than or equal to 1MPa, and P3 is more than or equal to 0.2MPa and less than or equal to 1 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911031741.5A CN110761833A (en) | 2019-10-28 | 2019-10-28 | Large and small pipe partial pressure type cavity grouting construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911031741.5A CN110761833A (en) | 2019-10-28 | 2019-10-28 | Large and small pipe partial pressure type cavity grouting construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110761833A true CN110761833A (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911031741.5A Pending CN110761833A (en) | 2019-10-28 | 2019-10-28 | Large and small pipe partial pressure type cavity grouting construction method |
Country Status (1)
| Country | Link |
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| CN (1) | CN110761833A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424195A (en) * | 2008-01-23 | 2009-05-06 | 王岩 | Method and equipment for digging gangue and filling tunnel for coal mine coal-rock drift |
| CN201520987U (en) * | 2009-07-16 | 2010-07-07 | 中国京冶工程技术有限公司 | Flexible bag-type corrosion prevention device and anti-corrosion pile using same |
| CN102155241A (en) * | 2011-05-10 | 2011-08-17 | 广州市城市规划勘测设计研究院 | Karst grouting reinforcement water-stop constructing method |
| WO2016036350A1 (en) * | 2014-09-02 | 2016-03-10 | American Refining Group, Inc. | Composition comprising saturated hydrocarbon and method for dust suppression |
| CN107218078A (en) * | 2017-07-25 | 2017-09-29 | 福建永强岩土股份有限公司 | Filled for underground coal goaf and abandoned workings, the new technology of grouting filling |
| CN206874308U (en) * | 2017-07-12 | 2018-01-12 | 阎飞 | A kind of coal mine gob slip casting filling device |
| CN108086447A (en) * | 2017-12-13 | 2018-05-29 | 中国二十二冶集团有限公司 | Concrete drain pipeline interface ring-type grouting construction method |
-
2019
- 2019-10-28 CN CN201911031741.5A patent/CN110761833A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424195A (en) * | 2008-01-23 | 2009-05-06 | 王岩 | Method and equipment for digging gangue and filling tunnel for coal mine coal-rock drift |
| CN201520987U (en) * | 2009-07-16 | 2010-07-07 | 中国京冶工程技术有限公司 | Flexible bag-type corrosion prevention device and anti-corrosion pile using same |
| CN102155241A (en) * | 2011-05-10 | 2011-08-17 | 广州市城市规划勘测设计研究院 | Karst grouting reinforcement water-stop constructing method |
| WO2016036350A1 (en) * | 2014-09-02 | 2016-03-10 | American Refining Group, Inc. | Composition comprising saturated hydrocarbon and method for dust suppression |
| CN206874308U (en) * | 2017-07-12 | 2018-01-12 | 阎飞 | A kind of coal mine gob slip casting filling device |
| CN107218078A (en) * | 2017-07-25 | 2017-09-29 | 福建永强岩土股份有限公司 | Filled for underground coal goaf and abandoned workings, the new technology of grouting filling |
| CN108086447A (en) * | 2017-12-13 | 2018-05-29 | 中国二十二冶集团有限公司 | Concrete drain pipeline interface ring-type grouting construction method |
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