CN109113782A - A method of cave gas control is made suitable for coal mine suction road downlink drilling - Google Patents
A method of cave gas control is made suitable for coal mine suction road downlink drilling Download PDFInfo
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- CN109113782A CN109113782A CN201810929199.4A CN201810929199A CN109113782A CN 109113782 A CN109113782 A CN 109113782A CN 201810929199 A CN201810929199 A CN 201810929199A CN 109113782 A CN109113782 A CN 109113782A
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- cave
- gas
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- making
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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
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Abstract
The method for making cave gas control is crept into suitable for coal mine suction road downlink the invention discloses a kind of, comprising the following steps: coal seam S1: is drilled down into from coal mine suction road by drilling machine；S2: coal seam is crushed by making cave equipment, makes cave, forms cave in coal seam；S3: broken cinder in cave is discharged by the drilling rod of drilling machine, expands cave volume；S4: crack and secondary interstice using cave constitute gap network, cave are connected on dedicated gas pipeline, gas is evacuated to ground with extraction equipment.The present invention is scientific and reasonable, coal gas regulation effect is good, by making cave and realizing gas control and gas drainage using being drilled down into suction road a certain range, can effectively administer gas, reduce labor intensity of workers, can greatly reduce construction cost.
Description
Technical field
The present invention relates to technical field of coal mine, specially a kind of coal mine suction road downlink drilling that is suitable for makes cave gas control
Method.
Background technique
Underground coal petrography gas control is the maximum problem of underground coal mine, and China's major part gas permeability of coal seam is poor, gas bearing capacity
Height, gas pressure are big, and outburst hazard is big.Drillability is poor, and spray orifice easily occurs in drilling process, top brill, embraces the accidents such as brill,
The post-molding stability that drills is poor, hole wall collapse plug-hole phenomenon easily occurs, gas drainage low efficiency, extracting result is poor, gas control
Difficulty is big.For a long time by weak seam permeability is low and borehole stability difference factor is influenced, soft high gas layer gas
Difficulty of governance is big, and the lethality of coal mine gas explosion is high, therefore soft high gas layer mining area is that China's coal-mine is great
The high-incidence region of disaster is the main reason for restricting coal mining enterprise's development.
To solve the problems, such as that fire damp difficulty of governance is big, also occurs the technology of many gas controls at present, such as bottom plate rock
Lane layer-through drilling and suitable coal bed drilling, although solving the problems, such as that at the moment, the effect is unsatisfactory, the lane Di Chou cost is high,
Floor roadway layer-through drilling is by drilling machine cloth hole at present, and the traditional bottom pumping lane bore process construction period is long, and project amount is big, and extraction is dense
Spend low, pre- to take out that the effect is unsatisfactory, concordant drilling construction one-tenth porosity is low, and extracting result is poor.
Summary of the invention
The method for making cave gas control is crept into suitable for coal mine suction road downlink the purpose of the present invention is to provide a kind of, with
Solve the problems mentioned above in the background art.
To achieve the above object, the invention provides the following technical scheme: a kind of coal mine suction road downlink drilling that is suitable for is made
The method of cave gas control, comprising the following steps:
S1: coal seam is drilled down into from coal mine suction road by drilling machine；
S2: being crushed coal seam by making cave equipment, make cave, form cave in coal seam, and making the control of cave length is 3~5 m,
Making the control of cave spacing is 5~10 m；
S3: broken cinder in cave is discharged by the drilling rod of drilling machine, expands cave volume；
S4: crack and secondary interstice using cave constitute gap network, cave are connected on dedicated gas pipeline, extraction is used
Gas is evacuated to ground by equipment.
Preferably, in step 1, the penetration rate control of the drilling machine is 300~600 mm/min, the angle of revolution of drilling rod
Degree is 170 °, and the rotational speed of drilling rod is controlled in 6~40 rpm.
Preferably, described to make cave equipment and make cave or retrusive makes the method in cave in coal seam drilling using advancing in step 2
Into.
Preferably, in step 2, it is described make cave equipment and make cave mode cave is made or waterpower is made using mechanical hole reaming mode
Cave, or mechanical and waterpower combine and make any one in cave.
Preferably, in step 3, the drilling rod of the drilling machine is using any one in mechanical deslagging drilling rod or fluid deslagging drilling rod
Kind.
Preferably, in step 4, before extraction coal gas, need to check that gas and carbon dioxide are dense in dedicated gas pipeline
Whether degree meets prescribed requirement, and the coal gas after extraction is emitted into total return air.
Compared with prior art, the beneficial effects of the present invention are:
1. the present invention is scientific and reasonable, coal gas regulation effect is good, by making cave using being drilled down into suction road a certain range
It realizes gas control and gas drainage, can effectively administer gas, reduce labor intensity of workers, can greatly reduce and be constructed into
This；
2. the present invention, which carries out gas control using suction road, can save the construction in low level plate extraction lane, enterprise can be greatly saved
Cost；
3. the present invention makes cave by drilling rig technique, it is capable of increasing the free gap of gas, promotes coal gas to migrate, crustal stress disappears
Weak, nearby coal mass relief is anti-reflection in cave, can effectively improve gas drainage results.
Detailed description of the invention
Fig. 1 is present invention construction schematic diagram.
In figure: cave is made in 1 drilling machine, 2 suction roads, 3 lithospheres, 4 coal seams, 5.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
Referring to Fig. 1, the present invention provides a kind of technical solution: one kind being suitable for coal mine suction road downlink drilling and makes cave gas control
Method, comprising the following steps:
S1: coal seam is drilled down into from coal mine suction road by drilling machine；
S2: being crushed coal seam by making cave equipment, make cave, form cave in coal seam, and making the control of cave length is 3 m, makes
Spacing control in cave is 5 m；
S3: broken cinder in cave is discharged by the drilling rod of drilling machine, expands cave volume；
S4: crack and secondary interstice using cave constitute gap network, cave are connected on dedicated gas pipeline, extraction is used
Gas is evacuated to ground by equipment.
Wherein, the penetration rate control of drilling machine is 300 mm/min, and the angle of revolution of drilling rod is 170 °, the revolution speed of drilling rod
Degree control is in 6 rpm；Cave equipment is made using the method for making cave of advancing in drilling in coal；It makes cave equipment and makes cave mode using mechanical expansion
Hole mode makes cave；The drilling rod of drilling machine is using mechanical deslagging drilling rod；Before extraction coal gas, need to check in dedicated gas pipeline watt
Whether this and gas concentration lwevel meet prescribed requirement, and the coal gas after extraction is emitted into total return air.
Embodiment 2
Referring to Fig. 1, the present invention provides a kind of technical solution: one kind being suitable for coal mine suction road downlink drilling and makes cave gas control
Method, comprising the following steps:
S1: coal seam is drilled down into from coal mine suction road by drilling machine；
S2: being crushed coal seam by making cave equipment, make cave, form cave in coal seam, and making the control of cave length is 4 m, makes
Spacing control in cave is 7 m；
S3: broken cinder in cave is discharged by the drilling rod of drilling machine, expands cave volume；
S4: crack and secondary interstice using cave constitute gap network, cave are connected on dedicated gas pipeline, extraction is used
Gas is evacuated to ground by equipment.
Wherein, the penetration rate control of drilling machine is 400 mm/min, and the angle of revolution of drilling rod is 170 °, the revolution speed of drilling rod
Degree control is in 18 rpm；Cave equipment is made using the method for making cave of advancing in drilling in coal；It makes cave equipment and makes cave mode using waterpower
Make cave；The drilling rod of drilling machine is using mechanical deslagging drilling rod；Before extraction coal gas, need to check gas and two in dedicated gas pipeline
Whether oxidation concentration of carbon meets prescribed requirement, and the coal gas after extraction is emitted into total return air.
Embodiment 3
Referring to Fig. 1, the present invention provides a kind of technical solution: one kind being suitable for coal mine suction road downlink drilling and makes cave gas control
Method, comprising the following steps:
S1: coal seam is drilled down into from coal mine suction road by drilling machine；
S2: being crushed coal seam by making cave equipment, make cave, form cave in coal seam, and making the control of cave length is 4 m, makes
Spacing control in cave is 9 m；
S3: broken cinder in cave is discharged by the drilling rod of drilling machine, expands cave volume；
S4: crack and secondary interstice using cave constitute gap network, cave are connected on dedicated gas pipeline, extraction is used
Gas is evacuated to ground by equipment.
Wherein, the penetration rate control of drilling machine is 500 mm/min, and the angle of revolution of drilling rod is 170 °, the revolution speed of drilling rod
Degree control is in 28 rpm；It makes cave equipment and the method in cave is made in drilling in coal using retrusive；It makes cave equipment and makes cave mode using machine
Tool and waterpower, which are combined, makes cave；The drilling rod of drilling machine is using any one in fluid deslagging drilling rod；Before extraction coal gas, need to check
Whether gas and gas concentration lwevel meet prescribed requirement in dedicated gas pipeline, and the coal gas after extraction is emitted into total return air
In.
Embodiment 4
Referring to Fig. 1, the present invention provides a kind of technical solution: one kind being suitable for coal mine suction road downlink drilling and makes cave gas control
Method, comprising the following steps:
S1: coal seam is drilled down into from coal mine suction road by drilling machine；
S2: being crushed coal seam by making cave equipment, make cave, form cave in coal seam, and making the control of cave length is 5 m, makes
Spacing control in cave is 5~10 m；
S3: broken cinder in cave is discharged by the drilling rod of drilling machine, expands cave volume；
S4: crack and secondary interstice using cave constitute gap network, cave are connected on dedicated gas pipeline, extraction is used
Gas is evacuated to ground by equipment.
Wherein, the penetration rate control of drilling machine is 600 mm/min, and the angle of revolution of drilling rod is 170 °, the revolution speed of drilling rod
Degree control is in 40 rpm；It makes cave equipment and the method in cave is made in drilling in coal using retrusive；It makes cave equipment and makes cave mode using machine
Tool and waterpower, which are combined, makes cave；The drilling rod of drilling machine uses fluid deslagging drilling rod；Before extraction coal gas, need to check dedicated gas pipe
Whether gas and gas concentration lwevel meet prescribed requirement in road, and the coal gas after extraction is emitted into total return air.
Above four groups of embodiments can effectively administer gas, wherein extract and produce coal in twenty four hours in embodiment 3
Body gas amount is most, is worth of widely use.
The invention has the following beneficial effects:
The present invention it is scientific and reasonable, coal gas regulation effect is good, by using be drilled down into suction road a certain range make cave reality
Existing gas control and gas drainage, can effectively administer gas, reduce labor intensity of workers, can greatly reduce construction cost；
The construction in low level plate extraction lane can be saved by carrying out gas control using suction road, can greatly save entreprise cost；Pass through brill
Machine technology makes cave, is capable of increasing the free gap of gas, coal gas is promoted to migrate, crustal stress slackens, coal mass relief near cave
It is anti-reflection, gas drainage results can be effectively improved.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of creep into the method for making cave gas control suitable for coal mine suction road downlink, which comprises the following steps:
S1: coal seam is drilled down into from coal mine suction road by drilling machine；
S2: being crushed coal seam by making cave equipment, make cave, form cave in coal seam, and making the control of cave length is 3~5 m,
Making the control of cave spacing is 5~10 m；
S3: broken cinder in cave is discharged by the drilling rod of drilling machine, expands cave volume；
S4: crack and secondary interstice using cave constitute gap network, cave are connected on dedicated gas pipeline, extraction is used
Gas is evacuated to ground by equipment.
2. a kind of method for making cave gas control suitable for coal mine suction road downlink drilling according to claim 1, special
Sign is: in step 1, the penetration rate control of the drilling machine is 300~600 mm/min, and the angle of revolution of drilling rod is 170 °,
The rotational speed of drilling rod is controlled in 6~40 rpm.
3. a kind of method for making cave gas control suitable for coal mine suction road downlink drilling according to claim 1, special
Sign is: described to make cave equipment and make cave or retrusive makes the method in cave in drilling in coal using advancing in step 2.
4. a kind of method for making cave gas control suitable for coal mine suction road downlink drilling according to claim 1, special
Sign is: in step 2, it is described make cave equipment and make cave mode cave is made or waterpower makes cave, Huo Zheji using mechanical hole reaming mode
Tool and waterpower, which are combined, makes any one in cave.
5. a kind of method for making cave gas control suitable for coal mine suction road downlink drilling according to claim 1, special
Sign is: in step 3, the drilling rod of the drilling machine is using any one in mechanical deslagging drilling rod or fluid deslagging drilling rod.
6. a kind of method for making cave gas control suitable for coal mine suction road downlink drilling according to claim 1, special
Sign is: in step 4, before extraction coal gas, needing to check whether gas and gas concentration lwevel accord in dedicated gas pipeline
Prescribed requirement is closed, the coal gas after extraction is emitted into total return air.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810929199.4A CN109113782A (en) | 2018-08-15 | 2018-08-15 | A method of cave gas control is made suitable for coal mine suction road downlink drilling |
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| CN201810929199.4A CN109113782A (en) | 2018-08-15 | 2018-08-15 | A method of cave gas control is made suitable for coal mine suction road downlink drilling |
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Citations (5)
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| CN1693654A (en) * | 2005-06-02 | 2005-11-09 | 淮南矿业(集团)有限责任公司 | Gas pressure relief method of ground drilling extraction minery and goaf |
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| CN102031950A (en) * | 2010-12-06 | 2011-04-27 | 煤炭科学研究总院西安研究院 | Hole-forming process method for comb gas extraction borehole in coal seam roof |
| CN104763462A (en) * | 2015-04-07 | 2015-07-08 | 中国矿业大学 | Method for extracting high-pressure hydraulic cave-manufacturing gas from rock roadway crossing hole |
| CN104975868A (en) * | 2015-06-13 | 2015-10-14 | 山西晋城无烟煤矿业集团有限责任公司 | Top plate high-position boring large-diameter long-drill-hole gas extraction method based on directional drilling |
-
2018
- 2018-08-15 CN CN201810929199.4A patent/CN109113782A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693654A (en) * | 2005-06-02 | 2005-11-09 | 淮南矿业(集团)有限责任公司 | Gas pressure relief method of ground drilling extraction minery and goaf |
| CN101117894A (en) * | 2007-08-24 | 2008-02-06 | 阳泉煤业（集团）有限责任公司 | Fully mechanized coal face high suction tunnel lower-returning drilling primary mining gas drainage method |
| CN102031950A (en) * | 2010-12-06 | 2011-04-27 | 煤炭科学研究总院西安研究院 | Hole-forming process method for comb gas extraction borehole in coal seam roof |
| CN104763462A (en) * | 2015-04-07 | 2015-07-08 | 中国矿业大学 | Method for extracting high-pressure hydraulic cave-manufacturing gas from rock roadway crossing hole |
| CN104975868A (en) * | 2015-06-13 | 2015-10-14 | 山西晋城无烟煤矿业集团有限责任公司 | Top plate high-position boring large-diameter long-drill-hole gas extraction method based on directional drilling |
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| 方世跃: "《煤层气井建井工程》", 31 January 2015, 中国矿业大学出版社 * |
| 牟全斌等: "基于机械造穴的钻孔瓦斯强化抽采技术研究", 《煤炭科学技术》 * |
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