CN109870083A - A kind of method of coal and rock orientation long range anatonosis - Google Patents
A kind of method of coal and rock orientation long range anatonosis Download PDFInfo
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- CN109870083A CN109870083A CN201910326458.9A CN201910326458A CN109870083A CN 109870083 A CN109870083 A CN 109870083A CN 201910326458 A CN201910326458 A CN 201910326458A CN 109870083 A CN109870083 A CN 109870083A
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Abstract
The invention discloses a kind of methods of coal and rock orientation long range anatonosis, method includes the following steps: (1) determines the direction for needing to increase permeability in rock mass；(2) pvc pipe is fabricated to the shell and energy gathering cap of explosive pencil；(3) shell made of pvc pipe and energy gathering cap are coated into antistatic paint, then energy gathering cap and shell is bonded together with glue；(4) mining glue explosive column is packed into energy gathering cap and powder stick is made；(5) from ground along the multiple blast holes of anatonosis direction Drilling to needing to orient the antireflective rock mass in crack, and blast hole is arranged in a linear by anatonosis direction；(6) powder stick is packed into after blast hole and blocks all blast holes and ignites loaded explosive.Coal and rock of the invention orients seepage increasing method, in the blast hole that the fissure direction for needing to orient long range anatonosis is multiple rows of parallel and is arranged in a linear.The crack being formed by is together in series, increases the length in crack, and the permeability of coal and rock can be increased to the maximum extent.
Description
Technical field
The present invention relates to a kind of methods of coal and rock orientation long range anatonosis, belong to coal and rock orientation anatonosis technical field.
Background technique
With the development of science and technology, a large amount of infrastructure (including traffic, the energy, industry etc.) project verification construction in succession,
The ability that the Nature is transformed in the mankind is increasingly enhanced.At the same time, a large amount of engineering body all build with (or interior) on coal coal and rock,
Therefore, the case where we are to coal and rock grasp and transformation are particularly important.Wherein, the crack of coal and rock be one it is prominent because
Element, it is also harmful to our advantageous (extractions including gas, shale gas, natural gas, underground water, petroleum etc.) (including rock mass loses
Surely, rock burst, water burst etc.).So the research be transformed coal and rock crack and controlled has prior more practical value.
Extensive research has been obtained in CUMULATIVE BLASTING orientation anatonosis technology, encounters during tunnel is built rich in gas
Region, using CUMULATIVE BLASTING orientation anatonosis technology be preferably discharged rock stratum in gas, reduce even avoid because of methane accumulation
Personnel's bring is injured；Within coal mines, the permeability for increasing coal petrography using CUMULATIVE BLASTING orientation anatonosis technology, accelerates extraction
(or discharge) goes out the gas in coal and rock, and can reduce the injury to tunnel, is more advantageous to the quick development of coal work, gives
Bargh brings benefit；In underground water directional stream-guidance, provided using CUMULATIVE BLASTING orientation anatonosis technological transformation certain excellent
The crack in gesture direction, to control the flow direction of underground water.In the extraction of natural gas, this method also can be used, orientation increasing is transformed out
Crack is seeped, makes natural gas flow to extraction well, generates bigger economic benefit.But current coal petrography CUMULATIVE BLASTING orients anatonosis technology
Research substantially higher, the biggish more hard coal petrography of compression strength for elasticity modulus, and it is larger about compressibility, hard
The rare application of the hard lower coal petrography of degree.
However in common blasting seepage enhancement, radial crackle can be generated since explosive explodes in coal rock layer, when fried
Dose will generate destruction to roof when excessive, and the crackle that explosion generates when dose is put into very few is less to shadow
Anatonosis effect is rung, gas drainage efficiency can be reduced.Moreover, the larger a part consumption of energy that the explosive blasting in drilling generates exists
Circle is crushed, the spreading range of fracture belt is smaller, and the coal dust of crushing is easy blocking crack, or forms cavity by explosion, influences top, bottom
Plate stability.
From the hydraulic fracturing technology in the shale gas exploitation of North America using water as power, by spraying high-pressure water-based pressure break
Liquid makes coal and rock fracturing generate crack, to achieve the purpose that reservoir reconstruction.But this method has directionality and unicity, and
Less reproducible, secondary correctional effect is undesirable；Although high enegry gas fracturing since pressure rising time is shorter, the direction in crack not by
The control of crustal stress.
Summary of the invention
The technical problem to be solved by the present invention is a kind of method of coal and rock orientation long range anatonosis is provided, on solving
State problems of the prior art.
The technical scheme adopted by the invention is as follows: a kind of method of coal and rock orientation long range anatonosis, this method includes following
Step:
(1) direction for needing to increase permeability in rock mass is determined.
(2) pvc pipe that wall thickness is 2mm, outer diameter is 16mm is fabricated to the shell of explosive pencil；
(3) section is made with the pvc pipe that wall thickness is 0.5mm again is semicircular energy gathering cap, and the outer diameter of energy gathering cap is 8mm；
(4) shell made of pvc pipe and energy gathering cap are coated into antistatic paint, energy gathering cap uses two pieces, back to being symmetrically bonded in
Interior of shell and with shell formed through-hole；
(5) mining glue explosive column is packed into the space constituted between two energy gathering caps with shell, powder stick is made；
(6) multiple rows of blast hole being arranged in a linear is got on the direction that coal and rock needs anatonosis with drilling machine；
(7) all blast holes are blocked after powder stick obtained in step (5) being packed into each blast hole and successively delayed ignition is filled out
The powder stick explosive of dress, the explosion delay inequality between two neighboring blast hole are 30ms-50ms.
After Explosive roll loads in step (7), the length of the blocking section of blast hole is not less than the 12 of the blast hole aperture
Times.
Beneficial effects of the present invention: compared with prior art, effect of the invention is as follows:
(1) coal and rock of the invention orients long range seepage increasing method, and the pvc pipe for using wall thickness to be 16mm for 2mm, outer diameter is fabricated to
The shell of explosive pencil, the pvc pipe that wall thickness 0.5mm, outer diameter are 8mm are made semicircular energy gathering cap, reduce economic cost,
It is simple and quick；
(2) coal and rock of the invention orients long range seepage increasing method, multiple rows of parallel in the fissure direction for needing to orient anatonosis and be in
The crack being formed by is together in series by blast hole arranged in a straight line, increases the length in crack, and can increase coal to the maximum extent
The permeability of rock mass；
(3) coal and rock of the invention orients long range seepage increasing method, shell made of pvc pipe and energy gathering cap is coated antistatic
Paint, to improve safety and reliability in blasting process；
(4) coal and rock of the invention orients long range seepage increasing method, uses delayed ignition so that maximum efficiency increases coal and rock
Permeability；
(5) coal and rock of the invention orients long range seepage increasing method, various engineering scene is applicable to, such as determining for karstic ground water
Pump drainage rich in gas region, coal in coal rock layer are encountered during building to long range anatonosis water conservancy diversion, the extraction of natural gas, tunnel
The extraction etc. of layer gas, the scope of application is wider.
Detailed description of the invention
Fig. 1 is powder stick filling structure schematic diagram of the invention；
Fig. 2 is the filling infiltration direction schematic diagram of the present invention on site；
Fig. 3 is the filling cross-sectional view of the present invention on site.
Specific embodiment
With reference to the accompanying drawing and the present invention is described further in specific embodiment.
Embodiment 1: Guizhou karst water area needs to converge underground water water conservancy diversion, and water conservancy diversion position is about underground 70m, the layer
Position lithology is fine and close carbonate rock, and permeability is low and has certain distance.It needs to carry out crack transformation to this layer of position now, need
Directional, long range increase carbonate rock permeability now increases carbonate using coal and rock orientation long range seepage increasing method
Rock permeability makes underground water orientation discharge.
For above situation, a kind of method that the present invention orients long range anatonosis using coal and rock, as shown in Figure 1-3, should
Method the following steps are included:
(1) direction for needing to increase permeability in rock mass is determined.
(2) pvc pipe that wall thickness is 2mm, outer diameter is 16mm is fabricated to the shell 1 of explosive pencil；
(3) section is made with the pvc pipe that wall thickness is 0.5mm again is semicircular energy gathering cap 2, and the outer diameter of energy gathering cap 2 is 8mm；
(4) shell 1 made of pvc pipe and energy gathering cap 2 are coated into antistatic paint, energy gathering cap 2 uses two pieces, back to symmetrical bonding
In 1 inside of shell and through-hole 3(troughs for collecting energy, anatonosis direction are formed with shell 1),；
(5) mining glue explosive column 4(is built-in with millisecond detonator 6, millisecond detonator 6 is connected with fuse cord 8) it is packed into two cumulatives
In the space constituted between cover 2 with shell 1, powder stick is made；
(6) the ground region for needing layer position to be transformed is found, finds that anatonosis effect is best by measuring the region, and high-efficiency and economic
Explosion hole site is got into 5 position of blast hole to anatonosis region using drilling machine, and the aperture of blast hole 5 is 90mm, and blast hole 5 is in
It is arranged in a straight line；
(7) powder stick obtained in step (5) is packed into after each blast hole and all blast holes 5 and successively is blocked using tamper 7
The powder stick explosive that delayed ignition is loaded, the explosion delay inequality between two neighboring blast hole are 30ms-50ms.
After Explosive roll loads in step (6), the length of the blocking section of blast hole is not less than the 12 of the blast hole aperture
Times.
After ignition, then the permeability to transformation layer, infiltration direction and seepage distance measure.After construction, detection
The permeability that layer is transformed as the result is shown obviously increases, and is presented on the direction for needing anatonosis.Under normal conditions, hardness IV
The rock of grade belongs to medium solid rock, and the coal and rock above and below this formation hardness rank is also suitable explosion orientation length of the invention
It constructs apart from seepage increasing method.
In conclusion the present invention orients long range seepage increasing method the osmotic effect that increases hyposmosis coal petrography is obvious, construction
It is simple and convenient, economize on resources, provide guarantee for construction safety, and this method use scope is wider.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Within protection scope of the present invention, therefore, protection scope of the present invention should be based on the protection scope of the described claims lid.
Claims (2)
1. a kind of method of coal and rock orientation long range anatonosis, it is characterised in that: method includes the following steps:
(1) direction for needing to increase permeability in rock mass is determined；
(2) pvc pipe that wall thickness is 2mm, outer diameter is 16mm is fabricated to the shell of explosive pencil；
(3) section is made with the pvc pipe that wall thickness is 0.5mm again is semicircular energy gathering cap, and the outer diameter of energy gathering cap is 8mm；
(4) shell made of pvc pipe and energy gathering cap are coated into antistatic paint, energy gathering cap uses two pieces, back to being symmetrically bonded in
Interior of shell and with shell formed through-hole；
(5) mining glue explosive column is packed into the space constituted between two energy gathering caps with shell, powder stick is made；
(6) multiple rows of blast hole being arranged in a linear is got on the direction that coal and rock needs long range anatonosis with drilling machine；
(7) all blast holes are blocked after powder stick obtained in step (5) being packed into each blast hole and successively delayed ignition is filled out
The powder stick explosive of dress, the explosion delay inequality 30ms-50ms between two neighboring blast hole.
2. a kind of method of coal and rock orientation anatonosis according to claim 1, it is characterised in that: explosive medicine in step (7)
After volume loads, the length of the blocking section of blast hole is not less than 12 times of the blast hole aperture.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910326458.9A CN109870083A (en) | 2019-04-23 | 2019-04-23 | A kind of method of coal and rock orientation long range anatonosis |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910326458.9A CN109870083A (en) | 2019-04-23 | 2019-04-23 | A kind of method of coal and rock orientation long range anatonosis |
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| CN109870083A true CN109870083A (en) | 2019-06-11 |
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| CN201910326458.9A Pending CN109870083A (en) | 2019-04-23 | 2019-04-23 | A kind of method of coal and rock orientation long range anatonosis |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230960A (en) * | 2019-07-15 | 2019-09-13 | 贵州大学 | A kind of unbalance method of ground body heat around improvement underground pipe |
| CN112345436A (en) * | 2020-09-22 | 2021-02-09 | 中国石油天然气股份有限公司 | Acid-etched crack flow conductivity distribution testing method |
Citations (3)
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|---|---|---|---|---|
| CN201706988U (en) * | 2010-04-10 | 2011-01-12 | 葛洲坝集团第二工程有限公司 | Annular energy cumulating groove type flat bottom blasting explosive bag |
| CN103321669A (en) * | 2013-07-08 | 2013-09-25 | 中国矿业大学(北京) | Method for increasing permeability of low-permeability coal seam by means of deep-hole directional pre-splitting blasting |
| CN207280300U (en) * | 2017-09-11 | 2018-04-27 | 淄博中安工程技术有限责任公司 | One kind orientation sheathed explosive structure |
-
2019
- 2019-04-23 CN CN201910326458.9A patent/CN109870083A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201706988U (en) * | 2010-04-10 | 2011-01-12 | 葛洲坝集团第二工程有限公司 | Annular energy cumulating groove type flat bottom blasting explosive bag |
| CN103321669A (en) * | 2013-07-08 | 2013-09-25 | 中国矿业大学(北京) | Method for increasing permeability of low-permeability coal seam by means of deep-hole directional pre-splitting blasting |
| CN207280300U (en) * | 2017-09-11 | 2018-04-27 | 淄博中安工程技术有限责任公司 | One kind orientation sheathed explosive structure |
Non-Patent Citations (1)
| Title |
|---|
| 刘健等: ""深孔定向聚能爆破增透机制模拟试验研究及现场应用"", 《岩石力学与工程学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230960A (en) * | 2019-07-15 | 2019-09-13 | 贵州大学 | A kind of unbalance method of ground body heat around improvement underground pipe |
| CN112345436A (en) * | 2020-09-22 | 2021-02-09 | 中国石油天然气股份有限公司 | Acid-etched crack flow conductivity distribution testing method |
| CN112345436B (en) * | 2020-09-22 | 2023-07-25 | 中国石油天然气股份有限公司 | Method for testing distribution of diversion capability of acid etching crack |
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Application publication date: 20190611 |