水分对煤体物性参数影响试验研究  

Experimental research on effect of moisture on physical parameters of coal

作　　者：杨宏民[1] 郭怀广[1,2] 仇海生 

机构地区：[1]河南理工大学安全科学与工程学院 [2]煤科集团沈阳研究院有限公司,辽宁沈阳110016

出　　处：《中国安全科学学报》2016年第9期67-72,共6页China Safety Science Journal

基　　金：国家自然科学基金资助(51174081);河南理工大学博士基金资助(B2012-089)

摘　　要：为探讨水分对煤体物性参数的影响规律,试验研究水分对煤体抗压强度、渗透率和瓦斯解吸强度等指标的影响。采用试验模拟的方法,测试水分对不同破坏类型煤体渗透特性、力学特性以及孔隙结构特性等物性参数的影响。结果表明,随着煤体水分的增加,煤体抗压强度、渗透率、瓦斯解吸强度都有不同程度的降低,并呈负指数变化;水分对软、硬煤体物性参数的影响存在差异,即水分对硬煤的抗压强度和渗透率影响更加明显,而对软煤的瓦斯解吸强度影响更大。Influences of moisture on physical parameters of coal were studied experimentally, including the compressive strength, the permeability and the gas desorption intensity. The results show that these physical parameters are negative exponent functions of the moisture, and that influences of moisture on physical parameters of run coal are different from those on bank coal, that is to say influences of moisture on strength and permeability of bank coal are more significant than those on run coal, and influence of moisture on gas desorption intensity of run coal is more significant than that on bank coal.

关 键 词：水分 物性参数 孔隙结构 抗压强度 瓦斯解吸强度 渗透率 

分 类 号：X936[环境科学与工程—安全科学] TD7[矿业工程—矿井通风与安全]