瓦斯排放与煤体变形规律试验研究  

Experimental study on rules of gas drainage and coal mass deformation

作　　者：冯增朝[1] 赵阳升[1] 杨栋[1] 段康廉[1] 

机构地区：[1]太原理工大学采矿工艺研究所,山西太原030024

出　　处：《辽宁工程技术大学学报（自然科学版）》2006年第1期21-23,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(50404017;50434020);山西省自然科学基金资助项目(20051026)

摘　　要：针对影响煤体中瓦斯运移与排放的应力因素,通过大煤样的瓦斯排放试验研究,揭示了顺序加载与逆序加载下的煤体变形与瓦斯排放量以及排放时间的相关性。试验结果表明:无论何种加载方式,煤体变形与瓦斯排放量服从抛物线方程:ε=aq2+bq-c,;煤体变形与排放时间存在非线性关系:ε=t/(a1+b1t)。但不同的加载过程影响回归系数与煤体应力的关系。这些结论对煤矿的瓦斯抽放以及煤层气开发具有参考价值。Aming at the stress factor affecting flowage and drainage of gas in coal bed, through the research on the test of gas drainage on outsized coal samples, the relativity between coal mass deformation and gas drainage quantity ＆ time under load mode and unload mode is revealed respectively. This tests show that under whatever load modes, the relationship between coal mass deformation and gas drainage quantity follows the parabolic equation： ε=aq^2＋bq-c; and coal mass deformation is nonlinear function of gas drainage time：ε=t/（a1＋b1t）; however, different load modes exert different effects on the relationship between regression coefficient and coal bed stress. These conclusions are helpful for gas drainage and determination of coal roadway.

关 键 词：煤体变形 加载顺序 瓦斯抽放 试验研究 

分 类 号：TD712[矿业工程—矿井通风与安全]