煤矿安全2017，Vol.48Issue(6)：28-31,4.DOI:10.13347/j.cnki.mkaq.2017.06.008
煤岩组合体力学特性与瓦斯渗流规律试验研究
Experimental Study on Mechanical Properties and Permeability Evolution Law of Coal-rock Combination
摘要
Abstract
Based on triaxial permeability test system,the strength characteristics and permeability evolution law of coal-rock specimens of different height ratios of rock to coal under the condition of simulating different thicknesses of roof-coal-floor are studied.The results show that the peak strength values for coal-rock specimens are different due to the different height ratios of rock to coal,and the peak stress increases with the height ratio.The broken and failure models of the coal-rock combination specimens show a macroscopic shear fracture surface,and the fracture surface runs through the top and bottom rocks.With the increase of the axial strain,the permeability evolution law of the coal-rock combination specimen shows the "V" shape,which decreases to the lowest point first and then increases rapidly.And the corresponding axial strain of the permeability curve increases with the increase of the height ratio of rock to coal.关键词
煤与瓦斯共采/煤岩组合体/力学特性/渗透率/渗流规律Key words
simultaneous exploitation of coal and gas/coal-rock combination/mechanical property/permeability/permeability evolution law分类
矿业与冶金引用本文复制引用
常悦,张雅萍,栗继祖,王向玲,马利云,李燕..煤岩组合体力学特性与瓦斯渗流规律试验研究[J].煤矿安全,2017,48(6):28-31,4.基金项目
国家自然科学基金优秀青年科学基金资助项目(51422404) （51422404）
山西省高校哲学社会科学研究资助项目(2015310) （2015310）
吕梁市科技局资助项目(GG2015050) （GG2015050）
