CN114635697B - Pre-grouting treatment method for water damage of shaft well construction - Google Patents
Pre-grouting treatment method for water damage of shaft well construction Download PDFInfo
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- CN114635697B CN114635697B CN202210178346.5A CN202210178346A CN114635697B CN 114635697 B CN114635697 B CN 114635697B CN 202210178346 A CN202210178346 A CN 202210178346A CN 114635697 B CN114635697 B CN 114635697B
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- 238000010276 construction Methods 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000005553 drilling Methods 0.000 claims abstract description 18
- 230000005641 tunneling Effects 0.000 claims abstract description 14
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000003631 expected effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000002203 pretreatment Methods 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/04—Lining shafts; Linings therefor with brick, concrete, stone, or similar building materials
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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
- E21F16/00—Drainage
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a pre-grouting treatment method for water damage during shaft construction, which mainly comprises the steps of measuring and placing the plane position and the underground position of a shaft, analyzing geological information of the shaft to determine a section of a lower section needing grouting treatment, constructing a circular surrounding tunnel of the lower section of the shaft, constructing a grouting drilling hole upwards on the lower section of the shaft to perform pre-grouting treatment on a water-bearing layer, grouting the circular surrounding tunnel after the grouting treatment of the lower section of the shaft is finished and filling treatment, normally tunneling the shaft downwards to penetrate through the treated water-bearing layer of the lower section, and finally completing shaft construction; the invention is suitable for the working condition that the periphery of the bottom of the shaft is provided with a roadway, the depth of the shaft is larger, and the aquifer is mainly positioned in the bottom section of the shaft; the synchronous and parallel operation of the upper-section tunneling of the shaft and the lower-section water damage pre-treatment can be realized, the time delay of conventional ground grouting and working surface pre-grouting is reduced, and the shaft construction time is integrally saved.
Description
Technical Field
The invention relates to the field of underground disaster treatment of coal mines, in particular to a pre-grouting treatment method for water damage of shaft construction.
Background
The underground mine establishes the up-down connection through a shaft, and is the throat key path of the mine. The current methods for sinking the shaft are freezing method, open caisson method, drilling method and common method. When a well is built by a common method, the aquifer water damage which the shaft needs to pass through can be treated by adopting a pre-grouting method, and the shaft water-carrying digging and building method disclosed by Chinese patent CN112746849B can also be adopted for water damage prevention and control.
The current common method for treating water damage during well construction mainly comprises a ground pre-grouting method and a working face pre-grouting method, and the method is characterized in that after a shaft is constructed, the post-grouting is adopted for treating the residual water leakage points on the wall of the shaft. The ground pre-grouting mainly aims at the stratum with multiple water-bearing layers and large span, a plurality of drill holes are constructed on the ground before the shaft is built to reach the lowest water-bearing layer, each water-bearing layer is controlled through sectional grouting, and after the grouting is finished, the shaft is tunneled. And pre-grouting on the working face, namely tunneling the shaft to a certain distance from the aquifer, stopping tunneling, constructing a plurality of grouting drill holes downwards on the working face, grouting, and tunneling the shaft again after grouting. In addition, a parallel operation process of a plurality of working faces of pre-grouting on the ground of a shaft, which is disclosed by Chinese patent CN103233699A, also provides a grouting mode, the first section of grouting still occupies the construction time of the shaft, and the second section and the third section of drilling holes by grouting on the ground have small effective engineering quantity and high cost. The current commonly used shaft grouting method occupies a large amount of shaft construction time.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide a method for treating the water damage in shaft construction by pre-grouting, which is characterized in that a grouting hole is constructed upwards at the bottom of a shaft, and pre-grouting control is carried out on a water-bearing stratum at the bottom section of the shaft.
In order to solve the technical problem, the invention adopts the following technical scheme:
the invention provides a pre-grouting treatment method for water damage of shaft well construction, which comprises the following steps:
s1, measuring the central point of a shaft on the ground and the position of the bottom of the shaft;
s2, analyzing geological data of the shaft, and determining a section of the lower section of the shaft needing grouting treatment;
s3, normal construction of the upper section of the shaft and annular surrounding roadway construction of the shaft bottom; constructing a connection roadway at the bottom of a shaft, constructing an annular surrounding roadway at the periphery of the bottom of the shaft and constructing a temporary drainage system;
s4, pre-grouting treatment is carried out on the aquifer through upward construction grouting drilling at the lower section of the shaft;
s5, after the grouting treatment of the lower section of the shaft is finished, filling treatment is carried out on the annular surrounding roadway of the shaft bottom, and the shaft is normally tunneled downwards to penetrate through a treated aquifer of the lower section;
and S6, normally tunneling the shaft downwards to the designed well depth position, completing related supporting work, establishing a connection between the shaft bottom and an underground roadway, and completing shaft construction.
Preferably, in step S3, a communication roadway is constructed to the bottom of the shaft through an original underground roadway in the underground, and an annular surrounding roadway is constructed around the periphery of the bottom of the shaft.
Preferably, in step S3, the distance between the annular surrounding roadway and the outer wall of the shaft is 6-8m, and the height of the annular surrounding roadway is 4m and the width of the annular surrounding roadway is 3m, so that the operation of a drilling machine for underground tunnels can be accommodated.
Preferably, in step S4, a plurality of uniformly distributed grouting drill holes are vertically arranged upwards through an annular surrounding roadway constructed on the periphery of the shaft as a drilling field, the depth of each grouting drill hole reaches the uppermost aquifer, and grouting operation is performed through the grouting drill holes.
Preferably, in step S4, the grouting and drilling construction method includes: firstly, uniformly constructing a plurality of grouting drill holes, and then supplementing construction and checking injection supplementing holes in the interval between adjacent grouting drill holes;
if the water does not flow out of the filling holes after checking, indicating that the grouting effect is expected, stopping grouting;
if the water still exists in the grouting holes, after the grouting of the grouting holes is checked, second round of grouting holes are constructed at the interval positions of the constructed grouting drill holes, and therefore the grouting is carried out until no water exists in the grouting holes, an effective curtain is formed by grouting, and the grouting achieves the expected effect.
The invention has the beneficial effects that: the invention is suitable for the working condition that the periphery of the bottom of the shaft is provided with a roadway, the depth of the shaft is larger, and the aquifer is mainly positioned at the bottom section of the shaft; the synchronous and parallel operation of the upper-section tunneling of the shaft and the lower-section water damage pre-treatment can be realized, the time delay of conventional ground grouting and working surface pre-grouting is reduced, and the shaft construction time is integrally saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a method for treating water damage pre-grouting during shaft construction according to an embodiment of the present invention; .
FIG. 2 is a schematic view showing the formation of a waterproof curtain according to an embodiment of the present invention.
Description of reference numerals:
1. annularly winding the lane; 2. grouting and drilling; 3. a waterproof curtain.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, a method for treating water damage by pre-grouting in shaft construction comprises the following steps:
(1) measuring and releasing the plane position and the underground position of the shaft: measuring the central point of the shaft on the ground and the position of the shaft bottom according to a shaft design drawing;
(2) analyzing geological data of a shaft, and determining a lower section of a zone needing grouting treatment: collecting, sorting and analyzing the data of the shaft, and determining the position, structure, thickness, etc. of the water-bearing layer to be treated in the lower section of the shaft.
(3) Normal construction of the upper section of a shaft and tunneling construction of the lower section of a grouting ring around the roadway 1: the method comprises the steps of normally starting and tunneling a shaft on the ground, synchronously passing through an original underground roadway underground, constructing a connection roadway to the shaft bottom of the shaft (the roadway is not wasted, other well building methods are used immediately, and the roadway is also constructed in the later period), constructing an annular surrounding roadway 1 at the periphery of the shaft bottom, enabling the distance between the roadway and the outer wall of the shaft to be 6-8m, enabling the height of the roadway to be 4m and the width of the roadway to be 3m, and enabling the underground tunnel drilling machine to work.
Meanwhile, a temporary drainage system is built underground or a pipeline is laid to discharge water discharged from the annular surrounding roadway 1 in the middle and later stages of the grouting drill 2.
(4) Normal construction of pit shaft upper segment, hypomere carry out the slip casting in advance to the aquifer through upward drilling hole and administer: and (3) continuously and normally tunneling the upper section of the shaft, synchronously grouting the aquifer at the lower section, taking the annular surrounding roadway 1 constructed at the periphery of the shaft as a drilling site, vertically arranging grouting drill holes 2 upwards, enabling the depth of each grouting drill hole 2 to reach the uppermost aquifer, and performing grouting operation through the grouting drill holes 2.
The open holes of the grouting drill holes 2 are positioned in the annular surrounding roadway 1 and are arranged at equal intervals, the interval hole selection construction is adopted, 24 grouting drill holes are uniformly constructed, then the interval supplementary construction of 4 grouting drill holes 2 is carried out, the supplementary grouting holes are checked, if the supplementary grouting holes are checked to have no water, the grouting effect is expected, and the grouting is stopped;
if the water still exists in the grouting holes, after the grouting of the grouting holes is checked, constructing second-round checking grouting holes at the interval positions of the constructed grouting drill holes 2, and then performing the second-round checking grouting holes until no water exists in the grouting holes, so that the grouting is proved to form an effective waterproof curtain 3, and the grouting achieves the expected effect.
(5) Finishing the lower-section grouting treatment, and performing filling treatment on the bottom ring surrounding roadway 1; the shaft is normally tunneled downwards to pass through the lower section of the managed aquifer, and because the aquifer is managed in advance, water damage accidents cannot happen, and the shaft can be basically driven to be dry.
(6) And (3) completing shaft construction: and (4) normally tunneling the shaft downwards to the designed well depth position, completing related supporting work, establishing a connection between the shaft bottom and the underground roadway, and completing shaft construction.
Compared with the conventional ground grouting method, the method saves a large amount of useless drilling wells at the upper section, saves the time and cost for water damage treatment, and reduces the control difficulty and risk of drilling the conventional loose layer section; compared with the S-shaped hole type ground pre-grouting provided by the parallel operation process of the multiple working faces of the shaft ground pre-grouting disclosed by the Chinese patent CN103233699A, the S-shaped hole type ground pre-grouting saves the extension footage of a sinking well and reduces the cost; compared with the working face pre-grouting, the method does not need to stop tunneling, namely specially stopping shaft tunneling for water damage treatment; in addition, in the prior art, the space of a working surface in the shaft is small, only one drilling device can be contained, the integral drilling speed is low, and the invention can simultaneously operate a plurality of devices, thereby greatly saving the integral construction time of the shaft.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. A pre-grouting treatment method for water damage of shaft well construction is characterized by comprising the following steps:
s1, measuring the central point of a shaft on the ground and the position of the bottom of the shaft;
s2, analyzing geological data of the shaft, and determining a section of the lower section of the shaft needing grouting treatment;
s3, normal construction of the upper section of the shaft, annular surrounding roadway (1) construction of the shaft bottom and construction of a temporary drainage system are carried out;
s4, pre-grouting treatment is carried out on the aquifer through upward construction grouting drilling (2) at the lower section of the shaft;
s5, after the grouting treatment of the lower section of the shaft is finished, filling treatment is carried out on the annular surrounding roadway (1) at the bottom of the shaft, and the shaft is normally tunneled downwards to penetrate through a treated aquifer at the lower section;
and S6, normally tunneling the shaft downwards to the designed well depth position, completing related supporting work, establishing a connection between the shaft bottom and an underground roadway, and completing shaft construction.
2. The method for treating the water damage caused by the shaft construction according to claim 1, wherein in the step S3, a communication roadway is constructed at the bottom of the shaft through an original underground roadway, and a circular surrounding roadway (1) is constructed at the periphery of the bottom of the shaft.
3. The method for treating the water damage caused by shaft well construction according to claim 2, wherein in the step S3, the annular surrounding roadway (1) is 6-8m away from the outer wall of the shaft, and the annular surrounding roadway (1) has the height of 4m and the width of 3m and can accommodate the operation of a drilling machine of a downhole gallery.
4. The method for pre-grouting treatment of the water damage caused by shaft construction according to claim 3, wherein in step S4, a plurality of uniformly distributed grouting drill holes (2) are vertically arranged upwards by taking an annular surrounding roadway (1) constructed on the periphery of the shaft as a drilling field, the depth of each grouting drill hole (2) reaches the uppermost aquifer, and grouting operation is carried out through the grouting drill holes (2).
5. The method for treating the water damage in the shaft construction according to claim 4, wherein in the step S4, the construction method of the grouting drill hole (2) comprises the following steps: uniformly constructing a plurality of grouting drill holes (2), and then supplementing construction and checking injection supplementing holes in the interval between adjacent grouting drill holes (2);
if the water does not flow out of the filling holes after checking, indicating that the grouting effect is expected, stopping grouting;
if the water still exists in the grouting hole, after the grouting of the grouting hole is checked, a second round of grouting hole is constructed at the interval position of the constructed grouting drill hole (2) so as to carry out the grouting until no water exists in the grouting hole, an effective curtain (3) is formed by grouting, and the grouting achieves the expected effect.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210178346.5A CN114635697B (en) | 2022-02-25 | 2022-02-25 | Pre-grouting treatment method for water damage of shaft well construction |
| PCT/CN2023/076732 WO2023160471A1 (en) | 2022-02-25 | 2023-02-17 | Pre-grouting treatment method for water hazards in shaft construction |
| AU2023226534A AU2023226534A1 (en) | 2022-02-25 | 2023-02-17 | Pre-grouting treatment method for water hazards in shaft construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210178346.5A CN114635697B (en) | 2022-02-25 | 2022-02-25 | Pre-grouting treatment method for water damage of shaft well construction |
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| CN114635697A CN114635697A (en) | 2022-06-17 |
| CN114635697B true CN114635697B (en) | 2023-01-24 |
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| CN202210178346.5A Active CN114635697B (en) | 2022-02-25 | 2022-02-25 | Pre-grouting treatment method for water damage of shaft well construction |
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| Country | Link |
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| CN (1) | CN114635697B (en) |
| AU (1) | AU2023226534A1 (en) |
| WO (1) | WO2023160471A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320303A (en) * | 2021-12-09 | 2022-04-12 | 中国铁建大桥工程局集团有限公司 | Method for excavating vertical shaft flood discharge tunnel body support |
| CN114635697B (en) * | 2022-02-25 | 2023-01-24 | 中国矿业大学 | Pre-grouting treatment method for water damage of shaft well construction |
| CN115030727B (en) * | 2022-06-20 | 2023-04-07 | 长沙矿山研究院有限责任公司 | Method for treating harm of local water spraying in well shaft with installed equipment |
| CN115324592A (en) * | 2022-07-26 | 2022-11-11 | 陕西延长石油矿业有限责任公司 | Dynamic monitoring and dynamic response control method for aquifer for well construction |
| CN117780354B (en) * | 2024-02-28 | 2024-05-14 | 安徽建筑大学 | Method for reinforcing bottom of shaft of coal mine vertical shaft to be built by thick loose layer thin bedrock by sparse-filling |
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| CN112746849B (en) * | 2020-12-11 | 2022-02-18 | 中国矿业大学 | Shaft water-carrying digging and building method |
| CN114635697B (en) * | 2022-02-25 | 2023-01-24 | 中国矿业大学 | Pre-grouting treatment method for water damage of shaft well construction |
-
2022
- 2022-02-25 CN CN202210178346.5A patent/CN114635697B/en active Active
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2023
- 2023-02-17 WO PCT/CN2023/076732 patent/WO2023160471A1/en active Application Filing
- 2023-02-17 AU AU2023226534A patent/AU2023226534A1/en active Pending
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| Publication number | Publication date |
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| WO2023160471A1 (en) | 2023-08-31 |
| AU2023226534A1 (en) | 2024-05-09 |
| CN114635697A (en) | 2022-06-17 |
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