CA3054206A1 - Pitshaft coal uncovering method for coal mines whose coal seam lies in main aquifer - Google Patents
Pitshaft coal uncovering method for coal mines whose coal seam lies in main aquifer Download PDFInfo
- Publication number
- CA3054206A1 CA3054206A1 CA3054206A CA3054206A CA3054206A1 CA 3054206 A1 CA3054206 A1 CA 3054206A1 CA 3054206 A CA3054206 A CA 3054206A CA 3054206 A CA3054206 A CA 3054206A CA 3054206 A1 CA3054206 A1 CA 3054206A1
- Authority
- CA
- Canada
- Prior art keywords
- coal seam
- coal
- shaft
- water
- drilling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000005553 drilling Methods 0.000 claims description 21
- 238000000926 separation method Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000002265 prevention Effects 0.000 description 3
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000001881 scanning electron acoustic microscopy Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
Disclosed is a pitshaft coal uncovering method for coal mines whose coal seam lies in a main aquifer. The method, which solves the problem of water inrush, comprises:
constructing a vertical shaft from the ground to a weak aquifer in an overlying stratum which lies above the coal seam;
relieving pressure and draining water within a range from a construction drainage hole to the coal seam; grouting and blocking the vertical shaft; excavating an inclined shaft, constructing a drainage hole, an advance borehole, and a direct draining borehole, so as to control the water in the high-pressure coal seam and establish a temporary drainage system, through which the coal seam water is drained to the ground; and after the water is drained and pressure is relieved in the water containing coal seam, further excavating the inclined shaft until uncovering a coal safely.
constructing a vertical shaft from the ground to a weak aquifer in an overlying stratum which lies above the coal seam;
relieving pressure and draining water within a range from a construction drainage hole to the coal seam; grouting and blocking the vertical shaft; excavating an inclined shaft, constructing a drainage hole, an advance borehole, and a direct draining borehole, so as to control the water in the high-pressure coal seam and establish a temporary drainage system, through which the coal seam water is drained to the ground; and after the water is drained and pressure is relieved in the water containing coal seam, further excavating the inclined shaft until uncovering a coal safely.
Description
Description PITSHAFT COAL UNCOVERING METHOD FOR COAL MINES WHOSE COAL
SEAM LIES IN MAIN AQUIFER
I. Technical field The present invention relates to a coal uncovering method for mine shaft, particularly to a coal uncovering method for mine shaft with the coal seam as the main aquifer, which can solve a water inrush problem.
II. Background Art The water inrush problem in mines is always a major technical problem restricting the safe production in mines in China. In response to this problem, water inrush prevention methods such as setting up waterproof coal pillars, dewatering and depressurization, and grouting transformation of rock formation, etc. have been developed in China and foreign countries. A
hydrogeological characteristic of coal seam as the main aquifer is discovered for the first time in coal mines. There is no clear report on prevention and treatment of water hazards and coal uncovering techniques in such mines in China or foreign countries.
III. Contents of the Invention The object of the present invention is to provide a coal uncovering method for mine shaft with coal seam as the main aquifer on the problems of safe coal uncovering and prevention and treatment of water inrush caused by this special hydrogeological characteristic of coal seam as the main aquifer.
To attain the above-mentioned objects, the coal uncovering method for mine shaft with the coal seam as the main aquifer in the present invention comprises the following steps:
a. Constructing a vertical shaft downward vertically from the ground surface to a confining stratum or weak aquifer in the overlying strata above the coal seam;
b. Drilling drain holes downward vertically from the vertical shaft into the coal seam, and performing water drainage and pressure relief normally for the coal seam;
c. Grouting for plugging above the drain holes constructed in the vertical shaft after the water drainage and pressure relief is completed for the coal seam, and the height of grouting for plugging is 5-10m;
d. Drilling an inclined shaft from the bottom of the vertical shaft toward the coal seam in an inclined manner, while setting up a temporary water drainage system in the inclined shaft, after the grouting for plugging is completed;
e. Drilling a plurality of drain holes vertically at an interval from the inclined shaft toward the coal seam in the process of inclined shaft drilling;
f. Drilling an advance borehole from the heading end of the inclined shaft into the coal seam, when the inclined shaft is drilled to the coal seam;
g. Drilling a direct drainage borehole in front of the advance borehole vertically from the ground surface to the coal seam for pressure relief and water drainage for the coal seam in front of the advance borehole, and draining the water in the coal seam in the inclined shaft to the ground surface through the temporary drainage system; draining the water in the coal seam in front of the advance borehole to the ground surface through the direct drainage borehole;
h. Further drilling the inclined shaft along the advance borehole into the coal seam after the pressure of the water in the coal seam is relieved, so as to realize safe coal uncovering in the aquifer mine shaft.
The amount of water drainage for pressure relief of the drainage borehole and the advance borehole is that the amount of gushing water is reduced to below 100m3/h and the water pressure in the coal seam is reduced to below 0.1MPa.
The angle of drilling from the bottom of the vertical shaft toward the coal seam in an inclined manner is 6-12 .
3-5 drain holes are drilled vertically from the vertical shaft into the coal seam.
The horizontal separation distance of the plurality of drain holes drilled from the inclined shaft vertically toward the coal seam is 2.5-3.5m.
Beneficial effects: the present invention solves the problem of water inrush and borehole flooding in direct drilling and coal uncovering by grouting for plugging, and the problems related with coal uncovering in a mine shaft with the coal seam as the main aquifer are solved with a cross-discipline method. Thus, a mine shaft can be constructed quickly and effectively. The method provided in the present invention fills a blank in the domain of safe coal uncovering method under a special geologic condition that the coal seam is the main aquifer. A guarantee for safe coal uncovering is provided by water drainage and pressure relief for the coal seam through direct drainage borehole, and drilling drain holes and an advance borehole in an inclined shaft, the water inrush problem incurred by the special hydrogeological condition that the coal seam is the main aquifer is effectively prevented and treated, and thereby safe coal uncovering is realized. The amount of gushing water is reduced to below 100m3/h, and the water pressure in the coal seam is reduced to below 0.1MPa. The method provided in the present invention is an effective means for solving the problems related with coal uncovering in a mine shaft with the coal seam as the main aquifer, and the technical scheme in the present invention is reasonable in design and highly practical. The
SEAM LIES IN MAIN AQUIFER
I. Technical field The present invention relates to a coal uncovering method for mine shaft, particularly to a coal uncovering method for mine shaft with the coal seam as the main aquifer, which can solve a water inrush problem.
II. Background Art The water inrush problem in mines is always a major technical problem restricting the safe production in mines in China. In response to this problem, water inrush prevention methods such as setting up waterproof coal pillars, dewatering and depressurization, and grouting transformation of rock formation, etc. have been developed in China and foreign countries. A
hydrogeological characteristic of coal seam as the main aquifer is discovered for the first time in coal mines. There is no clear report on prevention and treatment of water hazards and coal uncovering techniques in such mines in China or foreign countries.
III. Contents of the Invention The object of the present invention is to provide a coal uncovering method for mine shaft with coal seam as the main aquifer on the problems of safe coal uncovering and prevention and treatment of water inrush caused by this special hydrogeological characteristic of coal seam as the main aquifer.
To attain the above-mentioned objects, the coal uncovering method for mine shaft with the coal seam as the main aquifer in the present invention comprises the following steps:
a. Constructing a vertical shaft downward vertically from the ground surface to a confining stratum or weak aquifer in the overlying strata above the coal seam;
b. Drilling drain holes downward vertically from the vertical shaft into the coal seam, and performing water drainage and pressure relief normally for the coal seam;
c. Grouting for plugging above the drain holes constructed in the vertical shaft after the water drainage and pressure relief is completed for the coal seam, and the height of grouting for plugging is 5-10m;
d. Drilling an inclined shaft from the bottom of the vertical shaft toward the coal seam in an inclined manner, while setting up a temporary water drainage system in the inclined shaft, after the grouting for plugging is completed;
e. Drilling a plurality of drain holes vertically at an interval from the inclined shaft toward the coal seam in the process of inclined shaft drilling;
f. Drilling an advance borehole from the heading end of the inclined shaft into the coal seam, when the inclined shaft is drilled to the coal seam;
g. Drilling a direct drainage borehole in front of the advance borehole vertically from the ground surface to the coal seam for pressure relief and water drainage for the coal seam in front of the advance borehole, and draining the water in the coal seam in the inclined shaft to the ground surface through the temporary drainage system; draining the water in the coal seam in front of the advance borehole to the ground surface through the direct drainage borehole;
h. Further drilling the inclined shaft along the advance borehole into the coal seam after the pressure of the water in the coal seam is relieved, so as to realize safe coal uncovering in the aquifer mine shaft.
The amount of water drainage for pressure relief of the drainage borehole and the advance borehole is that the amount of gushing water is reduced to below 100m3/h and the water pressure in the coal seam is reduced to below 0.1MPa.
The angle of drilling from the bottom of the vertical shaft toward the coal seam in an inclined manner is 6-12 .
3-5 drain holes are drilled vertically from the vertical shaft into the coal seam.
The horizontal separation distance of the plurality of drain holes drilled from the inclined shaft vertically toward the coal seam is 2.5-3.5m.
Beneficial effects: the present invention solves the problem of water inrush and borehole flooding in direct drilling and coal uncovering by grouting for plugging, and the problems related with coal uncovering in a mine shaft with the coal seam as the main aquifer are solved with a cross-discipline method. Thus, a mine shaft can be constructed quickly and effectively. The method provided in the present invention fills a blank in the domain of safe coal uncovering method under a special geologic condition that the coal seam is the main aquifer. A guarantee for safe coal uncovering is provided by water drainage and pressure relief for the coal seam through direct drainage borehole, and drilling drain holes and an advance borehole in an inclined shaft, the water inrush problem incurred by the special hydrogeological condition that the coal seam is the main aquifer is effectively prevented and treated, and thereby safe coal uncovering is realized. The amount of gushing water is reduced to below 100m3/h, and the water pressure in the coal seam is reduced to below 0.1MPa. The method provided in the present invention is an effective means for solving the problems related with coal uncovering in a mine shaft with the coal seam as the main aquifer, and the technical scheme in the present invention is reasonable in design and highly practical. The
2 method is simple and can attain a good application effect, and has extensive practicability in the technical field.
IV. Description of Drawings Fig. 1 is a geologic profile of coal uncovering in a mine shaft with the coal seam as the main aquifer in the present invention.
In the figures: 1 - ground surface; 2 - vertical shaft; 3 - overlying strata;
4 - coal seam 2#; 5 - drain hole; 6 - urea-formaldehyde resin; 7 - bottom of vertical shaft; 8 - inclined shaft; 9 - temporary drainage system; 10 - advance borehole; 11 - direct drainage borehole; 12 -coal uncovering.
V. Embodiments Hereunder, an embodiment of the present invention will be further detailed with reference to the accompanying drawings:
Take the exploitation of a mine shaft in a water-bearing coal seam in a mine as an example, and the geologic profile of the mine is as shown in Fig. 1, the coal seam 2# is the main aquifer, at 350m burial depth. In the original design for coal uncovering with a normal drilling method, the amount of water inrush into the roadway is 320m3/h, up to 540m3/h at the maximum, the maximum water pressure is 2.7MPa, and the sand shifting phenomenon is so severe that the construction cannot be carried out normally. In view of that phenomenon, water drainage and pressure relief is carried out for the coal seam through a direct drainage borehole, and drain holes and an advance borehole in an inclined shaft, specifically as follows:
a. A vertical shaft 2 is constructed downward vertically from the ground surface 1 through the overlying strata 3 to a confining stratum or weak aquifer in the overlying strata 3 above the coal seam 2# 4, wherein, the confining stratum is at 15m in the overlying strata 3 in the mine;
IV. Description of Drawings Fig. 1 is a geologic profile of coal uncovering in a mine shaft with the coal seam as the main aquifer in the present invention.
In the figures: 1 - ground surface; 2 - vertical shaft; 3 - overlying strata;
4 - coal seam 2#; 5 - drain hole; 6 - urea-formaldehyde resin; 7 - bottom of vertical shaft; 8 - inclined shaft; 9 - temporary drainage system; 10 - advance borehole; 11 - direct drainage borehole; 12 -coal uncovering.
V. Embodiments Hereunder, an embodiment of the present invention will be further detailed with reference to the accompanying drawings:
Take the exploitation of a mine shaft in a water-bearing coal seam in a mine as an example, and the geologic profile of the mine is as shown in Fig. 1, the coal seam 2# is the main aquifer, at 350m burial depth. In the original design for coal uncovering with a normal drilling method, the amount of water inrush into the roadway is 320m3/h, up to 540m3/h at the maximum, the maximum water pressure is 2.7MPa, and the sand shifting phenomenon is so severe that the construction cannot be carried out normally. In view of that phenomenon, water drainage and pressure relief is carried out for the coal seam through a direct drainage borehole, and drain holes and an advance borehole in an inclined shaft, specifically as follows:
a. A vertical shaft 2 is constructed downward vertically from the ground surface 1 through the overlying strata 3 to a confining stratum or weak aquifer in the overlying strata 3 above the coal seam 2# 4, wherein, the confining stratum is at 15m in the overlying strata 3 in the mine;
3-5 drain holes 5 are drilled vertically from the vertical shaft 2 into the coal seam 4;
b. 3 drain holes 5 are drilled downward vertically from the vertical shaft 2 into the coal seam 2#
b. 3 drain holes 5 are drilled downward vertically from the vertical shaft 2 into the coal seam 2#
4, and water drainage and pressure relief is performed normally for the coal seam;
c. Urea-formaldehyde resin 6 is grouted for plugging to 10m height above the drain holes 5 drilled in the vertical shaft 2, after the pressure relief and water drainage is completed for the coal seam through the drain holes 5;
d. An inclined shaft 8 is drilled from the bottom of the vertical shaft 7 toward the coal seam 4 in an inclined manner with an inclination angle of 6 after the grouting for plugging is completed, while a temporary drainage system 9 is set up in the inclined shaft 8, and a MG325 grouting for plugging material is grouted through the latest wet blasting process of BASF (a German company) for supporting and plugging in the inclined shaft; the angle of drilling from the bottom of the vertical shaft 7 toward the coal seam 4 in an inclined manner is 6-12';
e. A Plurality of drain holes 5 are drilled from the inclined shaft toward the coal seam 2# 4 vertically at an interval in the drilling process of the inclined shaft 8, wherein the horizontal interval of the plurality of drain holes 5 drilled from the inclined shaft 8 toward the coal seam 4 vertically is 2.5-3.5m;
f. An advance borehole 10 is drilled from the heading end of the inclined shaft 8 into the coal seam 2# 4 when the inclined shaft 8 is drilled to the coal seam 2# 4, and a direct drainage borehole II is drilled from the ground surface I vertically toward the coal seam 2# 4 at the same time, for water drainage and pressure relief for the coal seam 2# 4, the water in the coal seam in the inclined shaft 8 is drained to the ground surface 1 through the temporary drainage system 9, and the water in the coal seam is directly drained to the ground surface 1 through the direct drainage borehole 11;
g. The inclined shaft 8 is further drilled into the coal seam 2# after the water pressure relief is completed for the coal seam, so as to realize safe coal uncovering 12.
1. Altogether 48 drain holes are drilled in the downhole space, and the maximum water output of each drain hole is 6.4m3/h.
2. The water drainage and pressure relief for coal seam through the drainage borehole 5 and the advance borehole 10 are performed till the amount of gushing water is reduced to below 100m3/h and the water pressure in the coal seam is reduced to below 0.1MPa.
c. Urea-formaldehyde resin 6 is grouted for plugging to 10m height above the drain holes 5 drilled in the vertical shaft 2, after the pressure relief and water drainage is completed for the coal seam through the drain holes 5;
d. An inclined shaft 8 is drilled from the bottom of the vertical shaft 7 toward the coal seam 4 in an inclined manner with an inclination angle of 6 after the grouting for plugging is completed, while a temporary drainage system 9 is set up in the inclined shaft 8, and a MG325 grouting for plugging material is grouted through the latest wet blasting process of BASF (a German company) for supporting and plugging in the inclined shaft; the angle of drilling from the bottom of the vertical shaft 7 toward the coal seam 4 in an inclined manner is 6-12';
e. A Plurality of drain holes 5 are drilled from the inclined shaft toward the coal seam 2# 4 vertically at an interval in the drilling process of the inclined shaft 8, wherein the horizontal interval of the plurality of drain holes 5 drilled from the inclined shaft 8 toward the coal seam 4 vertically is 2.5-3.5m;
f. An advance borehole 10 is drilled from the heading end of the inclined shaft 8 into the coal seam 2# 4 when the inclined shaft 8 is drilled to the coal seam 2# 4, and a direct drainage borehole II is drilled from the ground surface I vertically toward the coal seam 2# 4 at the same time, for water drainage and pressure relief for the coal seam 2# 4, the water in the coal seam in the inclined shaft 8 is drained to the ground surface 1 through the temporary drainage system 9, and the water in the coal seam is directly drained to the ground surface 1 through the direct drainage borehole 11;
g. The inclined shaft 8 is further drilled into the coal seam 2# after the water pressure relief is completed for the coal seam, so as to realize safe coal uncovering 12.
1. Altogether 48 drain holes are drilled in the downhole space, and the maximum water output of each drain hole is 6.4m3/h.
2. The water drainage and pressure relief for coal seam through the drainage borehole 5 and the advance borehole 10 are performed till the amount of gushing water is reduced to below 100m3/h and the water pressure in the coal seam is reduced to below 0.1MPa.
Claims (5)
1. A coal uncovering method for mine shaft with the coal seam as the main aquifer, comprising the following steps:
a. Constructing a vertical shaft (2) downward vertically from the ground surface (1) to a confining stratum or weak aquifer in the overlying strata (3) above the coal seam (4);
b. Drilling drain holes (5) downward vertically from the vertical shaft (2) into the coal seam (4), and performing water drainage and pressure relief normally for the coal seam;
c. Grouting for plugging (6) above the drain holes (5) drilled in the vertical shaft (2) after the water drainage and pressure relief is completed for the coal seam, the height of grouting for plugging is 5-10m;
d. Drilling an inclined shaft (8) from the bottom of the vertical shaft (7) toward the coal seam (4) in an inclined manner, while setting up a temporary water drainage system (9) in the inclined shaft (8), after the grouting for plugging is completed;
e. Drilling a plurality of drain holes (5) vertically at an interval from the inclined shaft (8) toward the coal seam (4) in the drilling process of the inclined shaft (8);
f. Drilling an advance borehole (10) from the heading end of the inclined shaft (8) into the coal seam 4), when the inclined shaft (8) is drilled to the coal seam (4);
g. Drilling a direct drainage borehole (11) vertically from the ground surface (1) into the coal seam (4) in front of the advance borehole (10), and performing pressure relief and water drainage for the coal seam (4) in front of the advance borehole (10); draining the water in the coal seam in the inclined shaft (8) to the ground surface (1) through the temporary drainage system (9), and draining the water in the coal seam in front of the advance borehole (10) to the ground surface (1) through the direct drainage borehole (11);
h. Further drilling the inclined shaft (8) along the advance borehole (10) into the coal seam (4) after the pressure of the water in the coal seam is relieved, so as to realize safe coal uncovering (12) in the aquifer mine shaft.
a. Constructing a vertical shaft (2) downward vertically from the ground surface (1) to a confining stratum or weak aquifer in the overlying strata (3) above the coal seam (4);
b. Drilling drain holes (5) downward vertically from the vertical shaft (2) into the coal seam (4), and performing water drainage and pressure relief normally for the coal seam;
c. Grouting for plugging (6) above the drain holes (5) drilled in the vertical shaft (2) after the water drainage and pressure relief is completed for the coal seam, the height of grouting for plugging is 5-10m;
d. Drilling an inclined shaft (8) from the bottom of the vertical shaft (7) toward the coal seam (4) in an inclined manner, while setting up a temporary water drainage system (9) in the inclined shaft (8), after the grouting for plugging is completed;
e. Drilling a plurality of drain holes (5) vertically at an interval from the inclined shaft (8) toward the coal seam (4) in the drilling process of the inclined shaft (8);
f. Drilling an advance borehole (10) from the heading end of the inclined shaft (8) into the coal seam 4), when the inclined shaft (8) is drilled to the coal seam (4);
g. Drilling a direct drainage borehole (11) vertically from the ground surface (1) into the coal seam (4) in front of the advance borehole (10), and performing pressure relief and water drainage for the coal seam (4) in front of the advance borehole (10); draining the water in the coal seam in the inclined shaft (8) to the ground surface (1) through the temporary drainage system (9), and draining the water in the coal seam in front of the advance borehole (10) to the ground surface (1) through the direct drainage borehole (11);
h. Further drilling the inclined shaft (8) along the advance borehole (10) into the coal seam (4) after the pressure of the water in the coal seam is relieved, so as to realize safe coal uncovering (12) in the aquifer mine shaft.
2. The coal uncovering method for mine shaft with the coal seam as the main aquifer according to claim 1, wherein, the water drainage and pressure relief for the coal seam through the drain holes (5) and the advance borehole (10) are performed till the amount of gushing water is reduced to below 100m3/h and the water pressure in the coal seam is reduced to below 0.1MPa.
3. The coal uncovering method for mine shaft with the coal seam as the main aquifer according to claim 1, wherein, the angle of drilling from the bottom of the vertical shaft (7) toward the coal seam (4) in an inclined manner is 6-12°.
4. The coal uncovering method for mine shaft with the coal seam as the main aquifer according to claim 1, wherein, 3-5 drain holes (5) are drilled vertically from the vertical shaft (2) into the coal seam (4).
5. The coal uncovering method for mine shaft with the coal seam as the main aquifer according to claim 1, wherein, the horizontal separation distance of the plurality of drain holes (5) drilled from the inclined shaft (8) vertically toward the coal seam (4) is 2.5-3.5m .
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610322505.9A CN105804754B (en) | 2016-05-16 | 2016-05-16 | A kind of coal seam is Main aquifer pitshaft method for uncovering coal |
| CN201610322505.9 | 2016-05-16 | ||
| PCT/CN2017/084071 WO2017198109A1 (en) | 2016-05-16 | 2017-05-12 | Pitshaft coal uncovering method for coal mines whose coal seam lies in main aquifer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA3054206A1 true CA3054206A1 (en) | 2017-11-23 |
| CA3054206C CA3054206C (en) | 2021-11-30 |
Family
ID=56451190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3054206A Active CA3054206C (en) | 2016-05-16 | 2017-05-12 | Pitshaft coal uncovering method for coal mines whose coal seam lies in main aquifer |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN105804754B (en) |
| CA (1) | CA3054206C (en) |
| WO (1) | WO2017198109A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804754B (en) * | 2016-05-16 | 2017-10-27 | 中国矿业大学 | A kind of coal seam is Main aquifer pitshaft method for uncovering coal |
| CN107152309B (en) * | 2017-07-19 | 2018-10-16 | 中国矿业大学 | A kind of coal seam is the high water level and high-speed drainage water damage control method of Main aquifer |
| CN109139011A (en) * | 2018-08-02 | 2019-01-04 | 缪协兴 | A kind of coal seam is the waterproof coal-mining method of Main aquifer |
| CN110344880A (en) * | 2019-08-20 | 2019-10-18 | 中国电建集团成都勘测设计研究院有限公司 | A kind of rich water tunnel construction advance water discharge structure and construction method |
| CN112855260B (en) * | 2021-02-03 | 2023-04-14 | 中煤科工集团西安研究院有限公司 | Method for quickly dredging and descending all areas after closure of underground curtain |
| CN113719284A (en) * | 2021-09-08 | 2021-11-30 | 中国矿业大学 | Shaft coal uncovering water damage prevention and control method based on fault fracture zone or collapse column |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1469137A1 (en) * | 1986-12-25 | 1989-03-30 | Ленинградский горный институт им.Г.В.Плеханова | Roof control method |
| SU1744274A1 (en) * | 1989-03-27 | 1992-06-30 | Всесоюзный научно-исследовательский институт горной геомеханики и маркшейдерского дела | Method of drying flooded workings |
| CN1737337A (en) * | 2004-08-19 | 2006-02-22 | 神华集团有限责任公司 | Water preventing method for mine in structure of thin base rock and thick loose aquifer |
| CN100560944C (en) * | 2007-12-27 | 2009-11-18 | 淮北矿业（集团）有限责任公司 | Aquifer preventing and controlling method for coal face roof plate separation layer |
| CN102061920B (en) * | 2010-12-24 | 2013-04-17 | 西安科技大学 | Exploring method of water liberation working surface of water-enriched mine area |
| CN102505963B (en) * | 2011-11-11 | 2017-02-01 | 山西晋城无烟煤矿业集团有限责任公司 | Stope face roof water pre-drainage construction method |
| CN103306683B (en) * | 2013-06-18 | 2015-08-12 | 中铁隧道集团有限公司 | A kind of construction method of comprehensive precipitation in hole when excavating deep tunnel |
| CN103742145B (en) * | 2013-12-24 | 2016-01-20 | 山东新阳能源有限公司 | Colliery rich water abnormal area water prevention method |
| CN104389634B (en) * | 2014-09-16 | 2016-08-17 | 中国矿业大学 | A kind of mine vertical shaft sieve well shaft wall structure and controlled trapping method thereof |
| CN104612753B (en) * | 2015-01-29 | 2016-07-13 | 湖南科技大学 | What maokou limestone underground grouting dammed closes the anti-method of harnessing the river that stifled lean phase combines |
| CN104963721A (en) * | 2015-05-26 | 2015-10-07 | 安徽建筑大学 | Downhole stereo rapid water drainage method through the combination of horizontal drilling holes and vertical drilling holes |
| CN104863629B (en) * | 2015-06-11 | 2017-03-01 | 中国矿业大学 | A kind of method taking out absciss layer gas and draining slip casting under overlying strata using combined drilling and counterboring |
| CN105804754B (en) * | 2016-05-16 | 2017-10-27 | 中国矿业大学 | A kind of coal seam is Main aquifer pitshaft method for uncovering coal |
-
2016
- 2016-05-16 CN CN201610322505.9A patent/CN105804754B/en active Active
-
2017
- 2017-05-12 CA CA3054206A patent/CA3054206C/en active Active
- 2017-05-12 WO PCT/CN2017/084071 patent/WO2017198109A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CA3054206C (en) | 2021-11-30 |
| CN105804754A (en) | 2016-07-27 |
| WO2017198109A1 (en) | 2017-11-23 |
| CN105804754B (en) | 2017-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA3054206C (en) | Pitshaft coal uncovering method for coal mines whose coal seam lies in main aquifer | |
| CN108894727B (en) | Water retention method for plugging main channel of overburden rock water flowing fracture by grouting in ground horizontal directional drilling | |
| CN110242301B (en) | Two-step grouting modification water-retention coal mining method for roof aquifer | |
| CN101070759B (en) | Thin-base-rock shallow coal-layer water-retaining production suitable-condition classification method | |
| CN111042791B (en) | Combined coal and coal bed gas co-production method for upper and lower wells of low-permeability coal bed group | |
| CN109577980B (en) | Underground longwall working face water-retaining coal mining method based on aquifer freezing | |
| CN100560937C (en) | A kind of thin basic rock shallow buried coal seam longwall face water retaining exploitation method | |
| CN109281707B (en) | Advanced prevention and control method for water damage of working face roof separation layer | |
| CN104863629A (en) | Method for extracting gas from separation layer below overlying strata, draining water and grouting through combined drill hole | |
| CN104502995A (en) | Ts-q method for evaluating floor water inrush dangerousness in coal mining of deep mine | |
| CN108412453A (en) | A kind of coal mining water controls system and construction method altogether with gas | |
| CN104314610A (en) | Outburst eliminating method for coal roadway stripe region | |
| CN107044280A (en) | A kind of bored grouting detection method of mining overburden absciss layer distribution characteristics | |
| CN104775816A (en) | Isolated grouting-filling mining method for overburden rock without village migration under cut-side local pressed-coal conditions | |
| CN109611146B (en) | Separation layer water drainage grouting method | |
| CN111764960B (en) | Coal mining separation layer water damage prevention and control method | |
| CN107152309B (en) | A kind of coal seam is the high water level and high-speed drainage water damage control method of Main aquifer | |
| CN110778317A (en) | Construction method for ground grouting filling drilling structure in caving zone in mining process | |
| CN102787606B (en) | Guard method to surrounding environment in a kind of excavation of foundation pit Precipitation Process | |
| CN113107589B (en) | Advanced pre-drainage method for coal seam roof aquifer ground | |
| CN107023013A (en) | A kind of green precipitation method for making full use of hydrogeological characteristic | |
| CN112302715B (en) | Soft sandstone aquifer dredging and lowering method | |
| CN103291307B (en) | A kind of rich water rockhole Dewatering by leading level method | |
| CN208220720U (en) | A kind of coal mining water and gas control system altogether | |
| CN104763423B (en) | Technology for mining powder ore by inverse well rock drilling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20190821 |
|
| EEER | Examination request |
Effective date: 20190821 |