深部开采围岩应力对煤巷瓦斯运移的影响  

On deep surround rock stress on coal seam roadway area gas seepage effect

作　　者：王海涛[1,2] 沈斌[2,3] 闫玉彪[1,4] WANG Haitao SHEN Bin YAN Yubiao(Resource Engineering Department, Heilongjiang University of Technology, Jixi 158100, China Key Laboratory of Mining Engineering of Heilongjiang Provincial Higher Learning Institution, Heilongjiang University of Science and Technology, Harbin 150000, China College of Safety Engineering, Heilongjiang University of Science and Technology, Harbin 150000, China State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing 100083, China)

机构地区：[1]黑龙江工业学院资源工程系,黑龙江鸡西158100 [2]黑龙江科技大学黑龙江省普通高校采矿重点实验室,哈尔滨150000 [3]黑龙江科技大学安全工程学院,哈尔滨150000 [4]中国矿业大学深部岩土力学与地下工程国家重点实验室,北京100083

出　　处：《矿业工程研究》2016年第4期14-18,共5页Mineral Engineering Research

基　　金：国家自然科学基金资助项目(51504088);黑龙江省普通高校采矿重点实验室开放课题资助项目(2014KF05);鸡西市科学技术计划资助项目(2014R184)

摘　　要：为了了解深部开采围岩应力作用下坚硬煤层瓦斯渗流规律,利用自制三轴渗透仪模拟煤样在稳定围压下渗流速度与轴压的关系曲线,并建立分段模拟方程.后利用FLAC3D软件建立深部围岩应力对煤层掘进区域力学模拟,以及掘进工作面瓦斯渗流相关数据测定和整理,分析得出:实验室测定围岩应力与瓦斯渗流速度模拟结果与实测数据模拟结果相吻合,深部围岩应力作用下,坚硬煤层巷道区域不同部位,瓦斯渗流速度具有差异性.数据拟合后发现瓦斯渗透速度具有分段特性,即煤巷顶、底板和巷道两帮区域瓦斯渗流速度特性与巷道起拱线区域瓦斯渗流速度特性不同.同时,分别建立了数学模型.深部围岩应力作用下,坚硬煤层巷道瓦斯运移特性的发现,能够指导煤巷掘进工作面瓦斯治理工作.In order to find the hard seam gas seepage laws under the deep surrounding rock stress, the relationship curves of seepage velocity and axial pressure of coal sample under stable confining pressure are simulated by the three self-made axis penetration instruments. The use of FLAC3Dsoftware and the data of gas seepage analysis results show that the numerical simulation results are consistent with the experimental results. Under the ground stress, the gas seepage velocity is different in roadway roof, roadway floor, roadway sides, and roadway arch line of the hard coal seam roadway area. At the same time, two areas mathematical model are established. These features can guide the gas treatment on the work place.

关 键 词：围岩应力 瓦斯渗流 FLAC^3D 

分 类 号：TD32[矿业工程—矿井建设]