CN109139011A - A kind of coal seam is the waterproof coal-mining method of Main aquifer - Google Patents
A kind of coal seam is the waterproof coal-mining method of Main aquifer Download PDFInfo
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- CN109139011A CN109139011A CN201810870073.4A CN201810870073A CN109139011A CN 109139011 A CN109139011 A CN 109139011A CN 201810870073 A CN201810870073 A CN 201810870073A CN 109139011 A CN109139011 A CN 109139011A
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- 239000003245 coal Substances 0.000 title claims abstract description 92
- 238000005065 mining Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000007569 slipcasting Methods 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 230000015556 catabolic process Effects 0.000 claims description 2
- 238000006731 degradation reaction Methods 0.000 claims description 2
- 230000003447 ipsilateral effect Effects 0.000 claims description 2
- 231100000614 poison Toxicity 0.000 claims description 2
- 230000007096 poisonous effect Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 4
- 239000011707 mineral Substances 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 4
- 239000003657 drainage water Substances 0.000 description 5
- 230000006837 decompression Effects 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000003325 tomography Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 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
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- 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)
- Architecture (AREA)
- Structural Engineering (AREA)
- Remote Sensing (AREA)
- Civil Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
A kind of coal seam is the waterproof coal-mining method of Main aquifer, first makes a call to row's inlet well along mining area or field with "nine squares" upper bound, carries out slip casting to coal seam, forms water block curtain band in coal seam；It is spaced a distance below water block curtain band again and plays the drainage hole I that a row is parallel to mining area or field with "nine squares" upper bound, also multiple drainage holes II are evenly arranged in the position border of each default pit shaft, pump drainage coal seam water is carried out, starts shaft building of constructing after below coal seam water pressure drop to safety value；After shaft building, exploiting field is arranged downwards along mining area or field with "nine squares" upper bound, beats inclined drainage hole III, drainage cracks in coal seam water from underground mining roadway to coal seam；Last back production coal.The present invention is to solve the special mineral hydrological geological conditions that coal seam is Main aquifer to go down into a mine the effective means of water damage prevention and treatment, and with strong points, method is simple, and design is rationally, highly reliable, at low cost, has and preferably promotes the use prospect.
Description
Technical field
The present invention is to be related to a kind of mine water disaster prevention and treatment for the special mineral hydrological geological tectonic conditions that coal seam is water-bearing layer
Method is the waterproof coal-mining method of basal water more particularly, to a kind of solution coal seam.
Background technique
Have been found that the special coalfield-hydrogeology that coal seam is Main aquifer constructs phenomenon in coal production practice, even
It was found that there is the case where coal seam is Main aquifer, this coal seam defined with traditional coalfield-hydrogeology be the concept of water barrier completely not
Together, serious new challenge is proposed to coal mine flood prevention and treatment.Coal seam is the hydrogeology construction mechanism of Main aquifer are as follows: coal seam shape
Cheng Hou, and new tectonic movement has occurred, a large amount of connectivity structural fractures are formed in more crisp run of mine coal seam, and add
The water-resisting property of seat earth is relatively good, has water recharging coal seam at coal-smits or tomography as crossed, then the coal seam, which just becomes, contains
Water layer, even basal water.This causes serious water damage to threaten to shaft building and seam mining, it is necessary to targeted mine
Well water evil control method and technology, eliminate this kind of safety of coal mines and efficiently produce.
Summary of the invention
In order to overcome the above-mentioned deficiency of the prior art, the present invention provides the waterproof coal mining side that a kind of coal seam is Main aquifer
Method can be realized normal shaft building and seam mining under the special mineral hydrological geological conditions that coal seam is Main aquifer, with strong points,
Method is simple, and design is rationally, highly reliable, at low cost, has and preferably promotes the use prospect.
The technical solution used to solve the technical problems of the present invention is that: first row's slip casting is played along mining area or field with "nine squares" upper bound
Drilling carries out slip casting to coal seam, forms water block curtain band in coal seam；It is spaced a distance below water block curtain band again and makes a call to one
Row is parallel to the drainage hole I of mining area or field with "nine squares" upper bound, is also evenly arranged in the position border of each default pit shaft multiple
Drainage hole II carries out pump drainage coal seam water, starts shaft building of constructing after below coal seam water pressure drop to safety value；After shaft building, along mine
Area or field with "nine squares" upper bound arrange downwards exploiting field, beat inclined drainage hole III, drainage coal seam from underground mining roadway to coal seam
Crevice water；Last back production coal.
Compared with prior art, a kind of coal seam of the invention is the waterproof coal-mining method of Main aquifer, is in mining area (well first
Field) at upper bound to coal seam slip casting, form water block curtain band, cut off the water source supply in the coal seam of mining area.Then to exploiting field coal
Layer draws water decompression, implements shaft building operation again after reaching safety standard, and to implementation pump drainage water harnessing around field with "nine squares", it is ensured that shaft building
Safety.Finally, implementing water drainage to working face coal seam from mining roadway, it is ensured that working face extraction is safe and efficient.As it can be seen that this
Inventive method realizes normal shaft building and seam mining, specific aim under the special mineral hydrological geological conditions that coal seam is Main aquifer
By force, administering method is simple, and rationally, strong operability is at low cost, and popularization and application foreground is good for design.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is that vertical cut-away schematic view is arranged in coal seam inlet well of the invention and drainage hole I.
Fig. 2 is that horizontal plane schematic diagram is arranged in drainage hole II around pit shaft of the invention.
Fig. 3 is that horizontal plane schematic diagram is arranged in exploiting field coal seam drainage hole III of the invention.
In figure: 1, coal seam, 2, top plate, 3, bottom plate, 4, inlet well, 5, water block curtain band, 6, drainage hole I, 7, pit shaft,
8, drainage hole II, 9, mining roadway, 10, drainage hole III.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, belongs to protection scope of the present invention.
Fig. 1 to Fig. 3 shows the structural schematic diagram of a preferred embodiment of the invention, and one of figure contains based on coal seam
The waterproof coal-mining method of water layer, includes the following steps:
(1) the surface drilling grouting for water blocking before shaft building and drill-hole pumping pre-process
A. with drilling hole amount at least for principle, inlet well 4 is beaten to coal seam 1 from ground along mining area or field with "nine squares" upper bound,
To 1 slip casting of coal seam, continuous water block curtain band 5 is formed in coal seam 1；
B. after water block curtain band 5 is formed, the draining brill that a row is parallel to water block curtain band 5 is made in 5 lower part of water block curtain band
Decompression of drawing water is implemented to the coal seam 1 within the scope of mining area or field with "nine squares" in hole I 6；
C. it made a circle at pit shaft 7 weeks and is evenly arranged drainage hole II 8, draw water to coal seam 1, to coal seam water pressure drop to peace
Total head (0.1MPa) starts shaft building later.
(2) the 1 white-out water harnessing of working face coal seam before mining
Exploiting field is arranged downwards along mining area or field with "nine squares" upper bound, then plays inclined draining from underground mining roadway 9 to coal seam 1
Drill III 10, drainage cracks in coal seam water, then safety coal extraction coal again.
(3) utilization of mine pump drainage water
Sewage treatment plant is established in mining area, degradation treatment, water quality are carried out to the poisonous and harmful equal substances in mine pump drainage water
It is utilized after up to standard for mining area.
In the present embodiment, the inlet well 4 is located at mining area or field with "nine squares" upper bound, and inlet well 4 passes through top
Plate 2 and coal seam 1, bottom touch the bottom plate 3 in coal seam 1, and according to 1 mechanical property of coal seam and cranny development degree, determine note
Spacing is 20m~40m between slurry drilling 4.The drainage hole I 6 is evenly arranged in away under 4 one sections of inlet well intervals
Portion is spaced on the parallel lines of about 500m to 1000m, and the spacing of drainage hole I 6 is by the water content in coal seam 1, i.e. drawing water by every hole
Depending on decompression amount, the bottom of drainage hole I 6 touches the bottom plate 3 in coal seam 1.The draining being evenly arranged around the pit shaft 7 is bored
The quantity in hole II 8 is three, and radius of the drainage hole II 8 away from pit shaft 7 is 30m, and the bottom of drainage hole II 8 touches coal seam 1
Bottom plate 3.Each pit shaft 7 arranges one group of similar drainage hole II 8.The draining of the mining roadway 9 of 1 two sides of working face coal seam
Drill III 10 equidistant arranged crosswises, and the spacing between ipsilateral drainage hole III 10 is 16m, the bottom hole of two sides drainage hole III 10
The thickness of alternate 8m, the visual coal seam 1 of the starting altitude of III 10 starting altitude of drainage hole are adjusted, and drainage grade is 5 ‰.
It is main in coal seam 1 and overlying strata according to the hydrogeology construction mechanism that coal seam 1 is Main aquifer, especially Main aquifer
Wanting water-bearing layer is coal seam 1, is the main object of mine prevention and treatment.And coal seam 1 is aqueous mainly in cracks in coal seam, entire water content
Be easier to estimate, nourishment source appear or tomography at, source is clearer.The method of the present invention is in mining area first
To 1 slip casting of coal seam at (field with "nine squares") upper bound, water block curtain is formed, cuts off the water source supply in mining area coal seam 1.Then to exploiting field
Coal seam 1 is drawn water decompression, implements shaft building operation again after reaching safety standard (0.1MPa), and control pump drainage water is implemented around field with "nine squares"
Reason, it is ensured that shaft building safety.Finally, implementing water drainage to working face coal seam 1 from mining roadway 9, it is ensured that working face extraction safety
Efficiently, and dredging processing is implemented to mine pump drainage water and is utilized, the method for the present invention is with strong points, and administering method is simple, and design is closed
Reason, strong operability is at low cost, and popularization and application foreground is good.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is all according to
According to technical spirit of the invention, any simple modification and same variation are made to above embodiments, each fall within guarantor of the invention
Within the scope of shield.
Claims (7)
1. the waterproof coal-mining method that a kind of coal seam is Main aquifer, characterized in that include the following steps: first along mining area or field with "nine squares"
Row's inlet well (4) is made a call on boundary in portion, carries out slip casting to coal seam (1), forms water block curtain band (5) in coal seam (1)；Again stifled
It is spaced a distance below water curtain band (5) and plays the drainage hole I (6) that a row is parallel to mining area or field with "nine squares" upper bound, also exist
The position border of each default pit shaft (7) is evenly arranged multiple drainage holes II (8), pump drainage coal seam water is carried out, to coal seam hydraulic pressure
Start shaft building of constructing after being down to safety value or less；After shaft building, exploiting field is arranged downwards along mining area or field with "nine squares" upper bound, is adopted from underground
Inclined drainage hole III (10), drainage cracks in coal seam water are beaten to coal seam (1) in area tunnel (9)；Last back production coal.
2. a kind of coal seam according to claim 1 is the waterproof coal-mining method of Main aquifer, it is characterized in that: the slip casting is bored
The foot of hole in hole (4) touches the bottom plate (3) of coal seam (1), and the spacing of wells is 20m~40m.
3. a kind of coal seam according to claim 1 or 2 is the waterproof coal-mining method of Main aquifer, it is characterized in that: described
Drainage hole I (6) is evenly arranged on the parallel lines apart from water block curtain band (5) 500m to 1000m, suction eye I spacing
Depending on water content by coal seam (1), hole bottom touches the bottom plate (3) of coal seam (1).
4. a kind of coal seam according to claim 1 or 2 is the waterproof coal-mining method of Main aquifer, it is characterized in that: the well
The quantity for the drainage hole II (8) being evenly arranged around cylinder (7) is three, and radius of the drainage hole II (8) away from pit shaft (7) is
30m, bottom hole touch the bottom plate (3) of coal seam (1).
5. a kind of coal seam according to claim 1 or 2 is the waterproof coal-mining method of Main aquifer, it is characterized in that: being located at work
Make the equidistant arranged crosswise of drainage hole III (10) of face coal seam (1) two sides, ipsilateral drainage hole III (10) spacing is 16m,
The alternate 8m of the bottom hole of two sides drainage hole III (10), drainage hole III (10) starting altitude are adjusted according to the thickness of coal seam (1),
Drainage grade is 5 ‰.
6. a kind of coal seam according to claim 1 is the waterproof coal-mining method of Main aquifer, it is characterized in that: the safety
Value is 0.1MPa.
7. a kind of coal seam according to claim 1 is the waterproof coal-mining method of Main aquifer, it is characterized in that: further include,
Mine System treatment plant is established in mining area, carries out degradation treatment to the poisonous and harmful substance in the mine water pumped out, supplies after up to standard
Mining area utilizes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810870073.4A CN109139011A (en) | 2018-08-02 | 2018-08-02 | A kind of coal seam is the waterproof coal-mining method of Main aquifer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810870073.4A CN109139011A (en) | 2018-08-02 | 2018-08-02 | A kind of coal seam is the waterproof coal-mining method of Main aquifer |
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| CN109139011A true CN109139011A (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810870073.4A Pending CN109139011A (en) | 2018-08-02 | 2018-08-02 | A kind of coal seam is the waterproof coal-mining method of Main aquifer |
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| CN (1) | CN109139011A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681269A (en) * | 2019-01-16 | 2019-04-26 | 内蒙古上海庙矿业有限责任公司 | Soft rocks are lauched-and husky mixing is prominent gushes Prevention Technique method |
| CN110159267A (en) * | 2019-04-18 | 2019-08-23 | 中国矿业大学 | A kind of water-bearing layer segmenting slip casting curtain water retaining mining method |
| CN112832769A (en) * | 2021-03-22 | 2021-05-25 | 中国矿业大学 | Outburst prevention mining method of coal seam floor high-pressure-bearing water freezing method |
| CN113217095A (en) * | 2021-05-28 | 2021-08-06 | 中煤科工集团西安研究院有限公司 | Advanced dewatering and dewatering system and method for sandstone aquifer and construction method |
| CN114233383A (en) * | 2021-12-03 | 2022-03-25 | 国家能源投资集团有限责任公司 | Construction method of water storage system of opencast coal mine |
| CN114483038A (en) * | 2022-01-26 | 2022-05-13 | 中国矿业大学 | Coal-pressing underground mining method for out-of-reach strip mine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010015574A1 (en) * | 1998-11-20 | 2001-08-23 | Cdx Gas, Llc, A Texas Limited Liability Company | Method and system for accessing subterranean deposits from the surface |
| US20100225154A1 (en) * | 2009-03-05 | 2010-09-09 | Fmc Corporation | Method for Simultaneously Mining Vertically Disposed Beds |
| CN203499698U (en) * | 2013-10-24 | 2014-03-26 | 中铁十三局集团第五工程有限公司 | Advanced curtain grouting system applied to underground engineering construction |
| CN104863629A (en) * | 2015-06-11 | 2015-08-26 | 中国矿业大学 | Method for extracting gas from separation layer below overlying strata, draining water and grouting through combined drill hole |
| CN105804754A (en) * | 2016-05-16 | 2016-07-27 | 中国矿业大学 | Coal uncovering method for mining shaft with coal seam as main water-bearing layer |
| CN106545313A (en) * | 2016-11-04 | 2017-03-29 | 华北有色工程勘察院有限公司 | Grouting curtain hole structure and its construction technology |
| CN107044289A (en) * | 2017-06-22 | 2017-08-15 | 中国矿业大学 | A kind of water damage prevention and controls of bored grouting closure overlying strata water producing fractures main channel |
| CN108086977A (en) * | 2017-12-14 | 2018-05-29 | 中国矿业大学 | A kind of coal seam prevents water-resisting floor coal-mining method for water-bearing layer |
-
2018
- 2018-08-02 CN CN201810870073.4A patent/CN109139011A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010015574A1 (en) * | 1998-11-20 | 2001-08-23 | Cdx Gas, Llc, A Texas Limited Liability Company | Method and system for accessing subterranean deposits from the surface |
| US20100225154A1 (en) * | 2009-03-05 | 2010-09-09 | Fmc Corporation | Method for Simultaneously Mining Vertically Disposed Beds |
| CN203499698U (en) * | 2013-10-24 | 2014-03-26 | 中铁十三局集团第五工程有限公司 | Advanced curtain grouting system applied to underground engineering construction |
| CN104863629A (en) * | 2015-06-11 | 2015-08-26 | 中国矿业大学 | Method for extracting gas from separation layer below overlying strata, draining water and grouting through combined drill hole |
| CN105804754A (en) * | 2016-05-16 | 2016-07-27 | 中国矿业大学 | Coal uncovering method for mining shaft with coal seam as main water-bearing layer |
| CN106545313A (en) * | 2016-11-04 | 2017-03-29 | 华北有色工程勘察院有限公司 | Grouting curtain hole structure and its construction technology |
| CN107044289A (en) * | 2017-06-22 | 2017-08-15 | 中国矿业大学 | A kind of water damage prevention and controls of bored grouting closure overlying strata water producing fractures main channel |
| CN108086977A (en) * | 2017-12-14 | 2018-05-29 | 中国矿业大学 | A kind of coal seam prevents water-resisting floor coal-mining method for water-bearing layer |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681269A (en) * | 2019-01-16 | 2019-04-26 | 内蒙古上海庙矿业有限责任公司 | Soft rocks are lauched-and husky mixing is prominent gushes Prevention Technique method |
| CN110159267A (en) * | 2019-04-18 | 2019-08-23 | 中国矿业大学 | A kind of water-bearing layer segmenting slip casting curtain water retaining mining method |
| CN110159267B (en) * | 2019-04-18 | 2020-06-02 | 中国矿业大学 | Water-bearing stratum sectional grouting curtain water-retention mining method |
| CN112832769A (en) * | 2021-03-22 | 2021-05-25 | 中国矿业大学 | Outburst prevention mining method of coal seam floor high-pressure-bearing water freezing method |
| CN112832769B (en) * | 2021-03-22 | 2023-03-14 | 中国矿业大学 | Outburst prevention mining method of coal seam floor high-pressure-bearing water freezing method |
| CN113217095A (en) * | 2021-05-28 | 2021-08-06 | 中煤科工集团西安研究院有限公司 | Advanced dewatering and dewatering system and method for sandstone aquifer and construction method |
| CN114233383A (en) * | 2021-12-03 | 2022-03-25 | 国家能源投资集团有限责任公司 | Construction method of water storage system of opencast coal mine |
| CN114233383B (en) * | 2021-12-03 | 2023-09-12 | 国家能源投资集团有限责任公司 | Construction method of water storage system of open pit coal mine |
| CN114483038A (en) * | 2022-01-26 | 2022-05-13 | 中国矿业大学 | Coal-pressing underground mining method for out-of-reach strip mine |
| CN114483038B (en) * | 2022-01-26 | 2022-10-11 | 中国矿业大学 | Coal-pressing underground mining method for out-of-reach strip mine |
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Application publication date: 20190104 |