CN114635697A - 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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- CN114635697A CN114635697A CN202210178346.5A CN202210178346A CN114635697A CN 114635697 A CN114635697 A CN 114635697A CN 202210178346 A CN202210178346 A CN 202210178346A CN 114635697 A CN114635697 A CN 114635697A
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- shaft
- grouting
- roadway
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
Abstract
The invention discloses a shaft well construction water damage pre-grouting treatment method which mainly comprises the steps of measuring and releasing a shaft plane position and a downhole position, analyzing shaft geological data to determine a section of a lower section needing grouting treatment, constructing a ring-shaped surrounding tunnel of the lower section of a shaft, constructing a grouting drilling hole upwards in the lower section of the shaft to perform pre-grouting treatment on a water-bearing layer, grouting the ring-shaped surrounding tunnel and filling treatment after the grouting treatment of the lower section of the shaft is finished, normally tunneling the shaft downwards to pass through the lower section treated water-bearing layer 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 the shaft and is the throat key of the mine. The current methods for sinking the shaft include 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 by grouting mainly comprises two methods, namely 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 residual water leakage points on the wall of the shaft are treated by grouting after the wall is constructed. The ground pre-grouting mainly aims at the stratum with multiple aquifers and large span, a plurality of drill holes are constructed on the ground before the construction of a shaft to reach the lowest aquifer, each aquifer is controlled through sectional grouting, and the shaft is tunneled after the grouting is finished. 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, the shaft ground pre-grouting multi-working-face parallel operation process disclosed in the Chinese patent CN103233699A also provides a grouting mode, the first section of grouting still occupies shaft construction time, and the second section and the third section of ground grouting drilling 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 problems, 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 the shaft on the ground and the position of the shaft 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, normally constructing the upper section of the shaft, and constructing the shaft bottom to form an annular surrounding roadway; constructing a connection tunnel at the bottom of a shaft, constructing an annular surrounding tunnel 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 at the bottom of the shaft, and the shaft is normally tunneled downwards to penetrate through the treated aquifer at the lower section;
and S6, normally tunneling the shaft downwards to the designed well depth position, completing the related supporting work, establishing the connection between the shaft bottom and the underground roadway, and completing the shaft construction.
Preferably, in step S3, a communication roadway is constructed at the bottom of the shaft through the original underground roadway, and an annular surrounding roadway is constructed at the periphery of the bottom of the shaft.
Preferably, in step S3, the annular round roadway is 6-8m away from the outer wall of the shaft, and the annular round roadway has a height of 4m and a width of 3m, so as to accommodate the operation of the underground tunnel drilling machine.
Preferably, in step S4, a plurality of grouting drill holes are vertically and uniformly distributed upwards through an annular surrounding roadway constructed around the shaft as a drilling site, 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 by pre-grouting for shaft construction according to an embodiment of the present invention; .
FIG. 2 is a schematic view of the waterproof curtain according to the 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:
measuring and releasing the plane position and the underground position of a shaft: measuring the central point of the shaft on the ground and the position of the shaft bottom of the shaft according to a shaft design drawing;
analyzing geological data of the shaft and determining a section needing grouting treatment at the lower section: 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.
Normal construction of the upper section of the shaft and tunneling construction of the lower section of the 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 constructed 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 hole 2.
Fourthly, normal construction of the upper section of the shaft and pre-grouting treatment of the lower section of the shaft on the aquifer through upward drilling holes: 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 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, and the grouting is carried out until no water exists in the grouting hole, so that an effective waterproof curtain 3 is formed, and the expected effect is achieved.
Fifthly, finishing the lower-section grouting treatment, and filling and treating the ring-shaped surrounding roadway 1 at the bottom of the well; the shaft is normally tunneled downwards to pass through the lower section of the managed aquifer, and the aquifer is managed in advance, so that water damage accidents can not happen, and the well can be basically driped.
Completing the construction of the shaft: 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 interval; compared with the S-shaped hole type ground pre-grouting provided by the shaft ground pre-grouting multi-working-surface parallel operation process disclosed by the Chinese patent CN103233699A, the extending footage of a shaft sinking is saved, and the cost is reduced; 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 the shaft on the ground and the position of the shaft 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, normally constructing the upper section of the shaft, constructing the shaft bottom and circularly surrounding the roadway (1) and constructing a temporary drainage system;
s4, pre-grouting treatment is carried out on the aquifer through the upward construction grouting drill hole (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 pass through the treated aquifer at the lower section;
and S6, normally tunneling the shaft downwards to the designed well depth position, completing the related supporting work, establishing the connection between the shaft bottom and the underground roadway, and completing the shaft construction.
2. The method for treating the water damage caused by the shaft construction according to claim 1, wherein in 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 step S3, the ring-shaped surrounding roadway (1) is 6-8m away from the outer wall of the shaft, and the ring-shaped surrounding roadway (1) has a height of 4m and a width of 3m and can accommodate the operation of a drilling machine of a downhole gallery.
4. The method for treating the water disaster caused by the shaft construction according to the claim 3, wherein in the step S4, a plurality of grouting drill holes (2) are vertically and uniformly distributed upwards by taking a ring-shaped surrounding roadway (1) constructed on the periphery of the shaft as a drilling field, the depth of each grouting drill hole (2) reaches the top 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 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 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 (2) so as to carry out grouting until no water exists in the grouting holes, an effective curtain (3) is formed by grouting, and the expected effect is achieved by grouting.
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 |
| AU2023226534A AU2023226534A1 (en) | 2022-02-25 | 2023-02-17 | Pre-grouting treatment method for water hazards in shaft construction |
| PCT/CN2023/076732 WO2023160471A1 (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 |
Publications (2)
| Publication Number | Publication Date |
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| CN114635697A true CN114635697A (en) | 2022-06-17 |
| CN114635697B CN114635697B (en) | 2023-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
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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 |
|---|---|
| CN (1) | CN114635697B (en) |
| AU (1) | AU2023226534A1 (en) |
| WO (1) | WO2023160471A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030727A (en) * | 2022-06-20 | 2022-09-09 | 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 |
| WO2023160471A1 (en) * | 2022-02-25 | 2023-08-31 | 中国矿业大学 | Pre-grouting treatment method for water hazards in shaft construction |
Families Citing this family (1)
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4458945A (en) * | 1981-10-01 | 1984-07-10 | Ayler Maynard F | Oil recovery mining method and apparatus |
| CN102518470A (en) * | 2011-12-27 | 2012-06-27 | 陕西彬长矿业集团有限公司 | Method for preventing and controlling water by using freezing pipes in annular water intercepting tunnel |
| CN105134125A (en) * | 2015-08-26 | 2015-12-09 | 北京中煤矿山工程有限公司 | Construction process for blocking bottom end of annular space behind gas vertical well wall |
| CN105545330A (en) * | 2016-02-26 | 2016-05-04 | 河北钢铁集团矿业有限公司 | Water prevention and control process in construction of metallurgical underground mining ore pass fragmenting system |
| CN109854249A (en) * | 2019-03-04 | 2019-06-07 | 中煤第五建设有限公司 | It is a kind of for extra deep shaft formation pre processing around the lane Jing Huan method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5842518A (en) * | 1997-10-14 | 1998-12-01 | Soybel; Joshua Richard | Method for drilling a well in unconsolidated and/or abnormally pressured formations |
| CN109026010B (en) * | 2018-08-13 | 2019-10-01 | 中煤能源研究院有限责任公司 | A kind of mine seepage well slip casting type sinking shaft construction method |
| CN111365002B (en) * | 2020-03-30 | 2021-07-30 | 北京中煤矿山工程有限公司 | Ground pre-grouting method for small-section high wellbore in complex stratum |
| 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
-
2023
- 2023-02-17 WO PCT/CN2023/076732 patent/WO2023160471A1/en active Application Filing
- 2023-02-17 AU AU2023226534A patent/AU2023226534A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4458945A (en) * | 1981-10-01 | 1984-07-10 | Ayler Maynard F | Oil recovery mining method and apparatus |
| CN102518470A (en) * | 2011-12-27 | 2012-06-27 | 陕西彬长矿业集团有限公司 | Method for preventing and controlling water by using freezing pipes in annular water intercepting tunnel |
| CN105134125A (en) * | 2015-08-26 | 2015-12-09 | 北京中煤矿山工程有限公司 | Construction process for blocking bottom end of annular space behind gas vertical well wall |
| CN105545330A (en) * | 2016-02-26 | 2016-05-04 | 河北钢铁集团矿业有限公司 | Water prevention and control process in construction of metallurgical underground mining ore pass fragmenting system |
| CN109854249A (en) * | 2019-03-04 | 2019-06-07 | 中煤第五建设有限公司 | It is a kind of for extra deep shaft formation pre processing around the lane Jing Huan method |
Non-Patent Citations (1)
| Title |
|---|
| 薛建坤等: "环状隔离体技术在塔然高勒煤矿主井冻结孔涌水封堵中的应用*", 《现代矿业》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023160471A1 (en) * | 2022-02-25 | 2023-08-31 | 中国矿业大学 | Pre-grouting treatment method for water hazards in shaft construction |
| CN115030727A (en) * | 2022-06-20 | 2022-09-09 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2023226534A1 (en) | 2024-05-09 |
| CN114635697B (en) | 2023-01-24 |
| WO2023160471A1 (en) | 2023-08-31 |
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