CN108979707A - A method of cave gas control is made suitable for coal mine Di Chou lane directional drilling - Google Patents
A method of cave gas control is made suitable for coal mine Di Chou lane directional drilling Download PDFInfo
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- CN108979707A CN108979707A CN201810929200.3A CN201810929200A CN108979707A CN 108979707 A CN108979707 A CN 108979707A CN 201810929200 A CN201810929200 A CN 201810929200A CN 108979707 A CN108979707 A CN 108979707A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/046—Directional drilling horizontal drilling
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- Geochemistry & Mineralogy (AREA)
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Abstract
The invention discloses a kind of methods for making cave gas control suitable for coal mine Di Chou lane directional drilling, comprising the following steps: S1: orienting horizontal drilling by drilling machine construction and makes cave, creeps into upwards from the lane Di Chou, into coal petrography engaging portion；S2: by sentencing the technologies such as knowledge with brill when drilling to rock and coal seam junction, control drilling leads oblique drilling at coal petrography end；S3: horizontal drilling 80-130 meters is carried out after in the middle part of drilling to coal seam；S4: as the case may be or condition, making cave using advance or retrusive made cave method and crept into the middle part of coal seam, such as make length 1-5 meters of cave, and making cave spacing is 8-10 meters；The construction of S5:S1-S4 is a circulation, so repeats S1-S4 and completes overlap joint circulation, control entire gas control region, achievees the purpose that screen digging laneway；The present invention is made cave and realizes gas control and gas drainage by being crept into obliquely using the lane Di Chou, can effectively administer gas, extraction is high-efficient, extraction concentration is high, it is at low cost, there is good promotion effect.
Description
Technical field
The present invention relates to gas control technology fields, specially a kind of to make cave gas suitable for coal mine Di Chou lane directional drilling
The method of improvement.
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 along coal bed drilling, although solving the problems, such as that at the moment, the effect is unsatisfactory, floor roadway layer-through drilling at
This height, the construction period is long, and project amount is big, and extraction concentration is low, and the effect is unsatisfactory for pre- pumping, and concordant drilling construction one-tenth porosity is low, takes out
It is poor to adopt effect.
Summary of the invention
The purpose of the present invention is to provide a kind of method for making cave gas control suitable for coal mine Di Chou lane directional drilling, with
Solve the problems, such as that background technique proposes.
To achieve the above object, the invention provides the following technical scheme: a kind of make suitable for coal mine Di Chou lane directional drilling
The method of cave gas control, comprising the following steps:
S1: horizontal drilling is oriented by drilling machine construction and makes cave, is crept into upwards from the lane Di Chou, into coal petrography engaging portion；
S2: by sentencing the technologies such as knowledge with brill when drilling to rock and coal seam junction, control drilling leads oblique drilling at coal petrography end；
S3: horizontal drilling 80-130 meters is carried out after in the middle part of drilling to coal seam；
S4: as the case may be or condition, cave is made using advance or retrusive is made cave method and crept into the middle part of coal seam, such as makes cave
1-5 meters of length, making cave spacing is 8-10 meters；
The construction of S5:S1-S4 is a circulation, so repeats S1-S4 and completes overlap joint circulation, controls entire gas control region,
Achieve the purpose that screen digging laneway.
Preferably, in the S2, leading the rake angle of leading tiltedly crept at coal petrography end is 65-75 degree.
Preferably, in the S4, advance and make cave or retrusive makes the cave mode of making in cave mechanical hole reaming mode can be used makes
Cave or machinery are made in cave, waterpower and waterpower combines and makes cave.
Preferably, in the S1-S4, the aperture for making cave is controlled in 100-250mm.
Compared with prior art, the beneficial effects of the present invention are: administering method of the invention is more scientific and reasonable, make coal
Body release, anti-reflection, reduction outburst prevention work amount, reduce the cost of gas control, realize safety in production, the high-efficiency mining of coal mine；Match
What set used is crushed coal body by making cave equipment, makes cave, by expanding cave after the broken cinder of specific method discharge
Greatly, biggish cavern is ultimately formed, using crack, this life crack, gap network is constituted, promotes coal gas to migrate, crustal stress
It slackens, nearby coal mass relief is anti-reflection in cave, can effectively improve gas drainage results；Cave is made by creeping into obliquely using the lane Di Chou
Realize gas control and gas drainage, can effectively administer gas, extraction is high-efficient, extraction concentration is high, it is at low cost, have it is good
Promotion effect.
Detailed description of the invention
Fig. 1 is construction schematic diagram of the invention.
In figure: cave 5, rock stratum 3, coal seam 4, is made at drilling machine 2 in the lane Di Chou 1.
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:
A method of cave gas control is made suitable for coal mine Di Chou lane directional drilling, comprising the following steps:
S1: horizontal drilling is oriented by drilling machine construction and makes cave, is crept into upwards from the lane Di Chou, into coal petrography engaging portion；
S2: by sentencing the technologies such as knowledge with brill when drilling to rock and coal seam junction, control drilling leads oblique drilling at coal petrography end；
S3: 80 meters of horizontal drilling are carried out after in the middle part of drilling to coal seam；
S4: as the case may be or condition, cave is made using advance or retrusive is made cave method and crept into the middle part of coal seam, such as makes cave
1 meter of length, making cave spacing is 8 meters；
The construction of S5:S1-S4 is a circulation, so repeats S1-S4 and completes overlap joint circulation, controls entire gas control region,
Achieve the purpose that screen digging laneway.
Further, in S2, leading the rake angle of leading tiltedly crept at coal petrography end is 65 degree.
Further, in S4, advance and make cave or retrusive makes the cave mode of making in cave mechanical hole reaming mode can be used makes cave.
Further, in S1-S4, the aperture for making cave is controlled in 150mm.
Embodiment 2:
A method of cave gas control is made suitable for coal mine Di Chou lane directional drilling, comprising the following steps:
S1: horizontal drilling is oriented by drilling machine construction and makes cave, is crept into upwards from the lane Di Chou, into coal petrography engaging portion；
S2: by sentencing the technologies such as knowledge with brill when drilling to rock and coal seam junction, control drilling leads oblique drilling at coal petrography end；
S3: 100 meters of horizontal drilling are carried out after in the middle part of drilling to coal seam；
S4: as the case may be or condition, cave is made using advance or retrusive is made cave method and crept into the middle part of coal seam, such as makes cave
2 meters of length, making cave spacing is 8.5 meters；
The construction of S5:S1-S4 is a circulation, so repeats S1-S4 and completes overlap joint circulation, controls entire gas control region,
Achieve the purpose that screen digging laneway.
Further, in S2, leading the rake angle of leading tiltedly crept at coal petrography end is 68 degree.
Further, in S4, advance and make cave or retrusive makes the cave mode of making in cave waterpower can be used makes cave.
Further, in S1-S4, the aperture for making cave is controlled in 180m.
Embodiment 3:
A method of cave gas control is made suitable for coal mine Di Chou lane directional drilling, comprising the following steps:
S1: horizontal drilling is oriented by drilling machine construction and makes cave, is crept into upwards from the lane Di Chou, into coal petrography engaging portion；
S2: by sentencing the technologies such as knowledge with brill when drilling to rock and coal seam junction, control drilling leads oblique drilling at coal petrography end；
S3: 110 meters of horizontal drilling are carried out after in the middle part of drilling to coal seam；
S4: as the case may be or condition, cave is made using advance or retrusive is made cave method and crept into the middle part of coal seam, such as makes cave
4 meters of length, making cave spacing is 9 meters；
The construction of S5:S1-S4 is a circulation, so repeats S1-S4 and completes overlap joint circulation, controls entire gas control region,
Achieve the purpose that screen digging laneway.
Further, in S2, leading the rake angle of leading tiltedly crept at coal petrography end is 72 degree.
Further, in S4, advance and make cave or retrusive makes the cave mode of making in cave mechanical and waterpower can be used combines and make
Cave.
Further, in S1-S4, the aperture for making cave is controlled in 230mm.
Embodiment 4:
A method of cave gas control is made suitable for coal mine Di Chou lane directional drilling, comprising the following steps:
S1: horizontal drilling is oriented by drilling machine construction and makes cave, is crept into upwards from the lane Di Chou, into coal petrography engaging portion；
S2: by sentencing the technologies such as knowledge with brill when drilling to rock and coal seam junction, control drilling leads oblique drilling at coal petrography end；
S3: 130 meters of horizontal drilling are carried out after in the middle part of drilling to coal seam；
S4: as the case may be or condition, cave is made using advance or retrusive is made cave method and crept into the middle part of coal seam, such as makes cave
5 meters of length, making cave spacing is 10 meters；
The construction of S5:S1-S4 is a circulation, so repeats S1-S4 and completes overlap joint circulation, controls entire gas control region,
Achieve the purpose that screen digging laneway.
Further, in S2, leading the rake angle of leading tiltedly crept at coal petrography end is 75 degree.
Further, in S4, advance and make cave or retrusive makes the cave mode of making in cave mechanical and waterpower can be used combines and make
Cave.
Further, in S1-S4, the aperture for making cave is controlled in 250mm.
Above four groups of embodiments can be achieved the directional drilling of the lane Di Chou and make cave gas control, and administering method of the invention
It is more scientific and reasonable, make coal mass relief, anti-reflection, reduction outburst prevention work amount, reduces the cost of gas control, realize the peace of coal mine
Full production, high-efficiency mining；It is matching used that coal body is crushed by making cave equipment, makes cave, it is discharged by specific method broken
Expand cave after broken cinder, ultimately form biggish cavern, using crack, this life crack, constitutes gap network, promote coal
Body gas migration, crustal stress slacken, and nearby coal mass relief is anti-reflection in cave, can effectively improve gas drainage results；By utilizing bottom
It takes out lane and creep into obliquely and makes cave realization gas control and gas drainage, can effectively administer gas, extraction is high-efficient, extraction concentration
It is high, at low cost, have good promotion effect.
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 (4)
1. a method of cave gas control is made suitable for coal mine Di Chou lane directional drilling, which comprises the following steps:
S1: horizontal drilling is oriented by drilling machine construction and makes cave, is crept into upwards from the lane Di Chou, into coal petrography engaging portion；
S2: by sentencing the technologies such as knowledge with brill when drilling to rock and coal seam junction, control drilling leads oblique drilling at coal petrography end；
S3: horizontal drilling 80-130 meters is carried out after in the middle part of drilling to coal seam；
S4: as the case may be or condition, cave is made using advance or retrusive is made cave method and crept into the middle part of coal seam, such as makes cave
1-5 meters of length, making cave spacing is 8-10 meters；
The construction of S5:S1-S4 is a circulation, so repeats S1-S4 and completes overlap joint circulation, controls entire gas control region,
Achieve the purpose that screen digging laneway.
2. a kind of method for making cave gas control suitable for coal mine Di Chou lane directional drilling according to claim 1, special
Sign is: in the S2, leading the rake angle of leading tiltedly crept at coal petrography end is 65-75 degree.
3. a kind of method for making cave gas control suitable for coal mine Di Chou lane directional drilling according to claim 1, special
Sign is: in the S4, advancing and makes cave or retrusive makes the cave mode of making in cave and can be used that mechanical hole reaming mode makes cave, waterpower is made
Cave or mechanical and waterpower, which are combined, makes cave.
4. a kind of method for making cave gas control suitable for coal mine Di Chou lane directional drilling according to claim 1, special
Sign is: in the S1-S4, the aperture for making cave is controlled in 100-250mm.
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| CN201810929200.3A CN108979707A (en) | 2018-08-15 | 2018-08-15 | A method of cave gas control is made suitable for coal mine Di Chou lane directional drilling |
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| CN201810929200.3A CN108979707A (en) | 2018-08-15 | 2018-08-15 | A method of cave gas control is made suitable for coal mine Di Chou lane directional drilling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392538A (en) * | 2020-11-18 | 2021-02-23 | 太原理工大学 | Progressive shield type bedding hydraulic cave construction method for tunneling working face of structural coal seam |
| CN114607338B (en) * | 2022-03-21 | 2023-08-18 | 煤炭科学技术研究院有限公司 | Coal mine underground coal rock gas prevention and control composite dynamic disaster method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392538A (en) * | 2020-11-18 | 2021-02-23 | 太原理工大学 | Progressive shield type bedding hydraulic cave construction method for tunneling working face of structural coal seam |
| CN114607338B (en) * | 2022-03-21 | 2023-08-18 | 煤炭科学技术研究院有限公司 | Coal mine underground coal rock gas prevention and control composite dynamic disaster method and device |
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Application publication date: 20181211 |
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