CN101105138A - Method for suppressing coal and gas outburst - Google Patents
Method for suppressing coal and gas outburst Download PDFInfo
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- CN101105138A CN101105138A CNA2007100355827A CN200710035582A CN101105138A CN 101105138 A CN101105138 A CN 101105138A CN A2007100355827 A CNA2007100355827 A CN A2007100355827A CN 200710035582 A CN200710035582 A CN 200710035582A CN 101105138 A CN101105138 A CN 101105138A
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Abstract
The invention belongs to security technical field in mining industry. The aim of the invention is to provide a method for preventing outburst of coal and gas. The method comprises: drilling injection freezing boreholes to coal seam with drilling equipment on coal mining working face of rock crosscut, arranging injection pipe lines along the injection freezing boreholes, and connecting a high pressure injection system to the injection pipe lines; starting the high pressure injection system, injecting to the coal seam to moisten coal; stopping injection when the coal seam is moistened, arranging low temperature freezing pipe lines, injecting and sealing holes to make the liquid full of the drilling holes, and starting a low temperature freezing system to freeze the coal seam; and beginning tunnel digging and coal mining work after coal being frozen. The cooling and being frozen of coal reduces the gasses resolution and diffused seepage speed and improves the coal strength and overall stability, so as to achieve the purpose of preventing outburst of coal and gas.
Description
Technical field
The present invention relates to the technical field of security and protection of mining industry, particularly relate to and suppress coal and the outstanding method of gas in the stone door punching coal process.
Background technology
Make a general survey of the particularly history of coal extractive industry of mining industry, along with society and progress of science and technology, the safety factor of mining progressively is improved, mine disaster has presented downward trend, yet mine disaster but still happens occasionally, this has brought immeasurable loss for national wealth and people's life, and wherein the mine disaster of gas disaster initiation accounts for very big ratio, and this situation has also caused country and relevant scientific and technical personnel's great attention.
Suppressing coal and gas outstanding is the important means of prevention gas disaster, at present, suppress in the stone door punching coal process that the method that coal and gas gives prominence to mainly contains advance borehole, the gas drainage under suction of holing, to blow out loosening, hydraulic flushing in hole, hydraulic slotted liner technique, fracturing and coal-bed flooding etc. several.(1) advance borehole is exactly to play several borings in crossdrift the place ahead in coal body, fully discharges coal body gas, reduces gas pressure, the broadening coal body unload pressure zone, avoid when stone door punching coal, occurring coal and gas and give prominence to.(2) boring gas drainage under suction is drilled to the coal containing methane gas layer exactly, and the gas in the coal seam is discharged, and the gas drainage under suction that discharges is gone out, and fully utilizes.(3) blow out looseningly, be meant charge explosion in coal body, coal body is become flexible, it can cause coal mass relief on the one hand, can improve the gas permeability of coal body and the flowability of gas on the other hand.(4) hydraulic flushing in hole is before stone door punching coal, uses high-pressure water jet, goes out the bigger hole of some diameters in projecting coal bed; Discharge a large amount of gas and the coal of some in the punch process, thereby in coal body, formed certain release, firedamp drainage zone, can prevent the outstanding generation in this zone.(5) hydraulic slotted liner technique, be a kind of in the gas drainage method, be exactly in the coal seam, to play earlier a boring, in the coal seam, go out the slot of a certain width then along boring with hydraulic giant, this slot has two kinds of effects, the one, in the scope of slot itself, be equivalent to exploit a little liberation layer, cause the slot release of coal body up and down, increased the air transmission coefficient in coal seam; Another effect is that slot forms the space in coal body, under powerful ground pressure effect, the coal body around the slot is flowed to the space, thereby enlarges the scope that slot release and Gas Permeation Coefficients of Coal Seams increase.(6) fracturing, also be a kind of in the gas drainage method, be by a large amount of highly pressurised liquids is pressed into the coal seam, force the coal seam to be broken, form the crack, and in fracturing liquid, sneak into quartz sand or other proppants, make proppant be full of the crack, so that after stopping pressure break, support the crack, prevent that the crack is closed again.(7) coal-bed flooding prevents that the outstanding mechanism of coal and gas from being: press water enters near the coal body of coal seam can be broken; Water enters the crack and the crack of inside, coal seam, makes original coal body moistening; Water seal the passage of Gas Flow; Increase the plasticity and the flexibility of coal, caused the loose of coal body; Reduce the speed that stress is concentrated and gas diffuses of coal body inside, thereby reduced outstanding danger.Above technical measures are purpose with firedamp drainage, release all.
Summary of the invention
The objective of the invention is to change and prevented in the past that the method that coal and gas are given prominence to from being the mechanism of purpose with firedamp drainage and release all, providing a kind of is purpose to improve coal mass strength and resistance to overturning, utilize chiller plant to freeze the certain regional coal and rock in digging laneway the place ahead, improve coal and rock stability and enabling capabilities thereof, around digging laneway, form the structure that a high strength intercepts outstanding power source, resist the middle and high gas pressure of stress collection that headwork causes the dynamic property of coal and rock is destroyed, thereby suppress the method that coal and gas are given prominence to.
The technical scheme steps that realizes the object of the invention is as follows: (1) arranges boring on the saturating coal work plane of crossdrift, get the fluid injection freezing borehole with rig to the coal seam, also can utilize the part firedamp taking-out discharging drilling; (2) along the fluid injection freezing borehole fluid injection pipeline is installed, and the high pressure liquid injection system is connected on the fluid injection pipeline; (3) start the high pressure liquid injection system, fluid injection makes coal body moistening in the coal seam; (4) after the coal seam is moistening, stop fluid injection, cryogenic freezing pipeline and sealing of hole fluid injection are installed, make liquid be full of boring, start cryogenic refrigeration systems, in the refrigerant pipeloop, under the circulating frozen effect of refrigerant, the coal seam is freezed; (5) after coal body freezes, begin the driving and the exposed coal operation in tunnel again.
The present invention at first gives the fluid injection of fluid injection freezing hole by the high pressure liquid injection system, makes coal body moistening, and then by cryogenic refrigeration systems coal body is carried out refrigeration, the coal and rock in driving face the place ahead is freezed after, begin the driving and the exposed coal operation in tunnel again.Because the cooling of coal body and freezing, reduced gas parsing diffuse seepage speed in the coal body, coal mass strength and resistance to overturning have been improved, make fluid injection and coal body freeze to be converted into the energy-dissipation structure that intercepts outstanding power source, after crossdrift is passed the coal seam, freeze coal body and slowly melt under natural environment, gas is slowly resolved and release in the coal body, suppress coal and the outstanding purpose of gas thereby reached, and protrusion-dispelling is effective.
Description of drawings
Fig. 1 is a structural representation of realizing the high pressure liquid injection system that method of the present invention adopted;
Fig. 2 is a structural representation of realizing the cryogenic refrigeration systems that method of the present invention adopted.
The specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Fig. 1 and Fig. 2 are the structural representations of realizing the isolated plant of the inventive method.Fig. 1 is the employed high pressure liquid injection system of a inventive method structural representation, from this figure as seen, some fluid injection pipelines 6 are positioned in the freezing boring 3 of fluid injection in the coal seam 2 in crossdrift tunnel 1, the fluid injection pipeline 5 that is connected with fluid injection pipeline 6 links to each other with high pressure topping-up pump 4, high pressure topping-up pump 4 is by 8 fluid infusion of fluid injection device for supplying, and valve member 7 is regulated the flow that enters liquid in the freezing hole 3 of each fluid injection.Fig. 2 is that the high pressure liquid injection system carries out the cryogenic refrigeration systems structural representation that is adopted after the fluid injection for coal seam 2, from this figure as seen, some refrigerant pipeloops 11 are positioned in the freezing boring 3 of fluid injection, and the refrigerant entrance point of each refrigerant pipeloop 11 and the refrigerant port of export are attempted by refrigerant respectively and return on the collector 13 for collector 12 and refrigerant; Refrigerant links to each other with the refrigerant output of chiller plant evaporimeter 14 by refrigerant circulating water pump 9 for collector 12, and refrigerant returns collector 13 and then links to each other with the refrigerant backflow end of chiller plant evaporimeter 14; Chiller plant evaporimeter 14 also links to each other with chiller plant condenser 16 with cryogenic refrigeration compressor 15, and chiller plant condenser 16 is communicated to ventilation opening.Be provided with valve member 17 at refrigerant circulating water pump 9 and refrigerant on the interface channel of collector 12; Be respectively equipped with valve member 18 at refrigerant for collector 12 and each refrigerant pipeloop 11 junction; Return at refrigerant on the interface channel of collector 13 and chiller plant evaporimeter 14 and also be provided with valve member 10.
Adopt device illustrated in figures 1 and 2 to realize that the step of the inventive method is as follows:
(1) on the saturating coal work plane in crossdrift tunnel 1, arranges boring, get fluid injection freezing borehole 3 to the coal seam, also can utilize the part firedamp taking-out discharging drilling with rig;
(2) along fluid injection freezing borehole 3 fluid injection pipeline 6 is installed, and high pressure liquid injection system shown in Figure 1 is connected on the fluid injection pipeline 6;
(3) start the high pressure liquid injection system, fluid injection makes coal body moistening in coal seam 2;
(4) after the coal seam is moistening, stop fluid injection, cryogenic freezing pipeline and sealing of hole fluid injection are installed, make liquid be full of boring, start cryogenic refrigeration systems, in refrigerant pipeloop 11, under the circulating frozen effect of refrigerant, coal seam 2 is freezed;
(5) after coal body freezes, begin the driving and the exposed coal operation in tunnel again.
The heat that described cryogenic refrigeration systems is produced when operation is drained in the ventilation opening by chiller plant condenser 16 shown in Figure 2.
Refrigerant flow in the described refrigerant pipeloop 11 can be regulated by valve member 10.
Claims (3)
1. one kind is suppressed coal and the outstanding method of gas, and step is as follows:
(1) on the saturating coal work plane of crossdrift, arranges boring, get the fluid injection freezing borehole to the coal seam, also can utilize the part firedamp taking-out discharging drilling with rig;
(2) along the fluid injection freezing borehole fluid injection pipeline is installed, and the high pressure liquid injection system is connected on the fluid injection pipeline;
(3) start the high pressure liquid injection system, fluid injection makes coal body moistening in the coal seam;
It is characterized in that also comprising the step of following order:
(4) after above-mentioned steps (3) makes the coal seam moistening, stop fluid injection, cryogenic freezing pipeline and sealing of hole fluid injection are installed, make liquid be full of boring, start cryogenic refrigeration systems, in the refrigerant pipeloop, under the circulating frozen effect of refrigerant, the coal seam is freezed;
(5) after coal body freezes, begin the driving and the exposed coal operation in tunnel again.
2. the method that inhibition coal according to claim 1 and gas are outstanding is characterized in that: the heat that described cryogenic refrigeration systems is produced when operation is drained in the ventilation opening by the chiller plant condenser.
3. the method that inhibition coal according to claim 1 and 2 and gas are outstanding, it is characterized in that: the refrigerant flow in the described refrigerant pipeloop can be regulated by valve member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100355827A CN101105138A (en) | 2007-08-15 | 2007-08-15 | Method for suppressing coal and gas outburst |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100355827A CN101105138A (en) | 2007-08-15 | 2007-08-15 | Method for suppressing coal and gas outburst |
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| CN101105138A true CN101105138A (en) | 2008-01-16 |
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| CNA2007100355827A Pending CN101105138A (en) | 2007-08-15 | 2007-08-15 | Method for suppressing coal and gas outburst |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979835A (en) * | 2010-09-21 | 2011-02-23 | 安徽省煤田地质局第一勘探队 | Method for preventing coal and gas burst by drill communicated coal mining exhaust |
| CN101603431B (en) * | 2009-07-14 | 2011-05-11 | 中国矿业大学 | Method for reinforcing outburst-prone coal seam cross-cut coal uncovering |
| CN102168560A (en) * | 2011-03-10 | 2011-08-31 | 贵州铸安矿山科技股份有限公司 | Displacement crosscut coal uncovering method |
| CN102174892A (en) * | 2011-03-10 | 2011-09-07 | 贵州铸安矿山科技股份有限公司 | Rotary cutting type cross-cut coal uncovering method |
| CN102322285A (en) * | 2011-06-17 | 2012-01-18 | 山东科技大学 | Coal seam water infusion device with high ground pressure, low porosity and low permeability and using process thereof |
| CN101749045B (en) * | 2009-12-23 | 2012-02-08 | 中国矿业大学(北京) | High-efficiency tunneling gas control method for high outburst mine coal roadway |
| CN102444402A (en) * | 2011-12-30 | 2012-05-09 | 中国矿业大学 | Method for regionally preventing coal and gas outburst |
| CN102536243A (en) * | 2012-02-28 | 2012-07-04 | 重庆市能源投资集团科技有限责任公司 | Coal seam freezing type cross-drift coal uncovering method |
| CN102900460A (en) * | 2012-11-06 | 2013-01-30 | 中国矿业大学 | Method for performing through-going seam cutting, pressure relief, permeability enhancement and quick tunneling on soft and high-outburst coal seam |
| CN104213921A (en) * | 2014-08-07 | 2014-12-17 | 中国矿业大学 | Freezing-type stone door cross-measure coal uncovering method based on hydraulic seam cutting |
| CN105317418A (en) * | 2015-11-09 | 2016-02-10 | 淮南矿业(集团)有限责任公司 | Method for preventing and treating coal and gas outburst |
| RU2599121C1 (en) * | 2015-03-11 | 2016-10-10 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | Method of protection from rock bumps and sudden emissions |
| CN106124243A (en) * | 2016-06-16 | 2016-11-16 | 重庆大学 | Coal seam gas-bearing capacity measures advanced freezing sampling method |
| CN106401590A (en) * | 2016-11-18 | 2017-02-15 | 华北科技学院 | Before-rock-cross-cut-coal-uncovering surrounding rock intensity control device and method |
| CN106401533A (en) * | 2016-11-25 | 2017-02-15 | 河南理工大学 | Device for quickly eliminating outburst by injecting liquid nitrogen to freeze coal through bedding drill holes twice |
| CN106812551A (en) * | 2016-03-30 | 2017-06-09 | 六盘水师范学院 | A kind of newly-built high gas and outburst mine in mountain area is worn layer and is taken out and speedy drivage system in advance |
| CN107605495A (en) * | 2017-11-06 | 2018-01-19 | 贵州大学 | A kind of structure and administering method for administering three-soft seam |
| CN112593999A (en) * | 2020-12-24 | 2021-04-02 | 山西晋煤集团技术研究院有限责任公司 | Directional long-drilling hydraulic permeability increasing method for soft coal seam and/or soft and hard composite coal seam |
-
2007
- 2007-08-15 CN CNA2007100355827A patent/CN101105138A/en active Pending
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603431B (en) * | 2009-07-14 | 2011-05-11 | 中国矿业大学 | Method for reinforcing outburst-prone coal seam cross-cut coal uncovering |
| CN101749045B (en) * | 2009-12-23 | 2012-02-08 | 中国矿业大学(北京) | High-efficiency tunneling gas control method for high outburst mine coal roadway |
| CN101979835A (en) * | 2010-09-21 | 2011-02-23 | 安徽省煤田地质局第一勘探队 | Method for preventing coal and gas burst by drill communicated coal mining exhaust |
| CN102168560A (en) * | 2011-03-10 | 2011-08-31 | 贵州铸安矿山科技股份有限公司 | Displacement crosscut coal uncovering method |
| CN102174892A (en) * | 2011-03-10 | 2011-09-07 | 贵州铸安矿山科技股份有限公司 | Rotary cutting type cross-cut coal uncovering method |
| CN102322285A (en) * | 2011-06-17 | 2012-01-18 | 山东科技大学 | Coal seam water infusion device with high ground pressure, low porosity and low permeability and using process thereof |
| CN102322285B (en) * | 2011-06-17 | 2013-05-15 | 山东科技大学 | Coal seam water infusion device with high ground pressure, low porosity and low permeability and using process thereof |
| CN102444402A (en) * | 2011-12-30 | 2012-05-09 | 中国矿业大学 | Method for regionally preventing coal and gas outburst |
| CN102444402B (en) * | 2011-12-30 | 2013-11-20 | 中国矿业大学 | Method for regionally preventing coal and gas outburst |
| CN102536243A (en) * | 2012-02-28 | 2012-07-04 | 重庆市能源投资集团科技有限责任公司 | Coal seam freezing type cross-drift coal uncovering method |
| CN102900460A (en) * | 2012-11-06 | 2013-01-30 | 中国矿业大学 | Method for performing through-going seam cutting, pressure relief, permeability enhancement and quick tunneling on soft and high-outburst coal seam |
| CN102900460B (en) * | 2012-11-06 | 2014-10-29 | 中国矿业大学 | Method for performing through-going seam cutting, pressure relief, permeability enhancement and quick tunneling on soft and high-outburst coal seam |
| CN104213921A (en) * | 2014-08-07 | 2014-12-17 | 中国矿业大学 | Freezing-type stone door cross-measure coal uncovering method based on hydraulic seam cutting |
| RU2599121C1 (en) * | 2015-03-11 | 2016-10-10 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | Method of protection from rock bumps and sudden emissions |
| CN105317418A (en) * | 2015-11-09 | 2016-02-10 | 淮南矿业(集团)有限责任公司 | Method for preventing and treating coal and gas outburst |
| CN105317418B (en) * | 2015-11-09 | 2018-01-16 | 淮南矿业(集团)有限责任公司 | The method for preventing and treating coal and gas prominent |
| CN106812551A (en) * | 2016-03-30 | 2017-06-09 | 六盘水师范学院 | A kind of newly-built high gas and outburst mine in mountain area is worn layer and is taken out and speedy drivage system in advance |
| CN106124243A (en) * | 2016-06-16 | 2016-11-16 | 重庆大学 | Coal seam gas-bearing capacity measures advanced freezing sampling method |
| CN106401590A (en) * | 2016-11-18 | 2017-02-15 | 华北科技学院 | Before-rock-cross-cut-coal-uncovering surrounding rock intensity control device and method |
| CN106401590B (en) * | 2016-11-18 | 2019-04-30 | 华北科技学院 | Surrounding Rock Strength control device and method before a kind of stone door punching coal |
| CN106401533A (en) * | 2016-11-25 | 2017-02-15 | 河南理工大学 | Device for quickly eliminating outburst by injecting liquid nitrogen to freeze coal through bedding drill holes twice |
| CN106401533B (en) * | 2016-11-25 | 2019-05-10 | 河南理工大学 | Secondary use concordant drilling fluid injection chilled nitrogen coal body rapid outburst elimination apparatus and method |
| CN107605495A (en) * | 2017-11-06 | 2018-01-19 | 贵州大学 | A kind of structure and administering method for administering three-soft seam |
| CN112593999A (en) * | 2020-12-24 | 2021-04-02 | 山西晋煤集团技术研究院有限责任公司 | Directional long-drilling hydraulic permeability increasing method for soft coal seam and/or soft and hard composite coal seam |
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