發(fā)布時(shí)間：2018-07-28 10:49

【摘要】：煤炭是我國(guó)國(guó)民經(jīng)濟(jì)發(fā)展的主要能源，瓦斯災(zāi)害連續(xù)多年影響著我國(guó)安全生產(chǎn)的總體形勢(shì)，而卸壓瓦斯抽采是煤層群瓦斯治理的重要途徑，可以改善煤礦安全生產(chǎn)條件、提高煤礦的經(jīng)濟(jì)效益，實(shí)現(xiàn)煤與瓦斯安全共采。 系統(tǒng)地總結(jié)評(píng)述了近年來采動(dòng)卸壓瓦斯運(yùn)移理論和高位鉆孔治理瓦斯技術(shù)的研究成果及其應(yīng)用現(xiàn)狀，結(jié)合五虎山煤礦1201綜采工作面開采條件，以室內(nèi)煤巖體力學(xué)測(cè)試結(jié)果為基礎(chǔ)，采用ANSYS軟件，構(gòu)建采場(chǎng)彈塑性模型，研究了采場(chǎng)圍巖應(yīng)力-采動(dòng)裂隙場(chǎng)分布規(guī)律及圍巖破斷空間的應(yīng)力分布特征，進(jìn)而判斷工作面上覆巖層受采動(dòng)影響的“三帶”分布情況；在理論分析與Fluent數(shù)值模擬的基礎(chǔ)上，研究煤層群開采采動(dòng)卸壓瓦斯分布規(guī)律、尾巷對(duì)采空區(qū)瓦斯分布的影響等，進(jìn)一步研究了回采空間采動(dòng)瓦斯流場(chǎng)分布規(guī)律。最后，結(jié)合工作面瓦斯涌出來源分析及涌出量預(yù)測(cè)，，將基于數(shù)值模擬試驗(yàn)結(jié)果所設(shè)計(jì)的高位鉆孔抽采采動(dòng)卸壓瓦斯方案在五虎山煤礦進(jìn)行現(xiàn)場(chǎng)實(shí)驗(yàn)，考察單個(gè)鉆孔抽采量隨推進(jìn)距離、抽采時(shí)間等因素的變化特征，并最終確定高位鉆孔的合理布孔參數(shù)。 結(jié)果表明：數(shù)值模擬方法所得到的卸壓瓦斯抽采參數(shù)布置合理，高位鉆孔布置在采動(dòng)裂隙場(chǎng)中，能取得良好的抽放效果，保證了工作面的安全生產(chǎn)，為優(yōu)化卸壓瓦斯抽采系統(tǒng)、實(shí)現(xiàn)煤與瓦斯安全共采提供了一定的理論依據(jù)和技術(shù)支持。
[Abstract]:Coal is the main source of energy for the development of national economy in our country. Gas disaster affects the overall situation of safety production in our country for many years, and unpressurized gas extraction is an important way to control gas in coal seam group, which can improve the safe production condition of coal mine. To improve the economic benefit of coal mine and realize the safe co-mining of coal and gas. This paper systematically summarizes and comments on the research achievements and application status of gas migration theory of mining movement and pressure relief in recent years and gas control technology with high drilling hole, combined with the mining conditions of 1201 fully mechanized mining face in Wuhushan Coal Mine. Based on the mechanical test results of indoor coal and rock mass, the elastic-plastic model of stope is constructed by using ANSYS software, and the distribution law of stress-mining fracture field and the stress distribution characteristics of surrounding rock fracture space are studied. On the basis of theoretical analysis and Fluent numerical simulation, the distribution law of mining pressure relief gas in coal seam group mining and the influence of tail roadway on gas distribution in goaf are studied. The distribution law of gas flow field in mining space is further studied. Finally, based on the analysis of the source of gas emission and the prediction of gas emission in the working face, field experiments are carried out in Wuhushan Coal Mine, which is based on the results of numerical simulation test. The variation characteristics of the extraction amount of a single borehole with the propulsive distance and extraction time were investigated, and the reasonable hole layout parameters of the high hole were determined. The results show that the pressure relief gas drainage parameters obtained by the numerical simulation method are reasonable, and the high level drilling holes are arranged in the mining fissure field, which can obtain a good drainage effect and ensure the safe production of the working face. In order to optimize the pressure relief gas drainage system, It provides certain theoretical basis and technical support to realize coal and gas safe co-mining.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TD712

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 聶百勝,何學(xué)秋,王恩元;瓦斯氣體在煤孔隙中的擴(kuò)散模式[J];礦業(yè)安全與環(huán)保;2000年05期

2 程遠(yuǎn)平,俞啟香,袁亮;上覆遠(yuǎn)程卸壓巖體移動(dòng)特性與瓦斯抽采技術(shù)[J];遼寧工程技術(shù)大學(xué)學(xué)報(bào);2003年04期

3 梁棟，黃元平;采動(dòng)空間瓦斯運(yùn)動(dòng)的雙重介質(zhì)模型[J];阜新礦業(yè)學(xué)院學(xué)報(bào)(自然科學(xué)版);1995年02期

4 劉澤功,袁亮,戴廣龍,石必明,盧平,涂敏;開采煤層頂板環(huán)形裂隙圈內(nèi)走向長(zhǎng)鉆孔法抽放瓦斯研究[J];中國(guó)工程科學(xué);2004年05期

5 李樹剛,錢鳴高;我國(guó)煤層與甲烷安全共采技術(shù)的可行性[J];科技導(dǎo)報(bào);2000年06期

6 郭玉森;林柏泉;吳傳始;;圍巖裂隙演化與采動(dòng)卸壓瓦斯儲(chǔ)運(yùn)的耦合關(guān)系[J];采礦與安全工程學(xué)報(bào);2007年04期

7 李煥;呂自偉;趙亮;展闊;;高位鉆孔瓦斯抽放冒落帶與裂隙帶高度的測(cè)定方法[J];現(xiàn)代礦業(yè);2011年01期

8 楊其鑾;關(guān)于煤屑瓦斯放散規(guī)律的試驗(yàn)研究[J];煤礦安全;1987年02期

9 唐一博;孫越;王潤(rùn);劉具;趙楠;李曼;;高位鉆孔抽放技術(shù)在許疃煤礦的應(yīng)用[J];煤礦安全;2011年09期

10 馬世志,范滿長(zhǎng),殷秋朝;頂板高位水平鉆孔瓦斯抽放技術(shù)應(yīng)用研究[J];煤炭科學(xué)技術(shù);2002年09期

本文編號(hào)：2149861