采矿与安全工程学报Issue(3)：494-498,5.
瓦斯气体在煤体爆破损伤断裂过程中的作用机理研究
Action mechanism of methane gas in the process of coal blasting damage and fracture
摘要
Abstract
In this paper, the action mechanism of methane gas in the process of coal blasting damage and fracture were analyzed comprehensively based on the experiment, numerical simulation, and theo-retical analysis results. The process of coal blasting damage and fracture includes the initial stage acted by blasting wave and the later stage acted by detonation gas and methane gas. The methane gas has pos-itive role in the whole process, which can increase the blasting damage degree and the crack propaga-tion velocity. In the initial stage, the methane gas can increase the stress wave peak, extend the action time and reduce the decay rate of stress in the tensile phrase. In the later stage, the methane gas takes pate in the crack propagation process drived by detonation gas, and the crack propagation will further promote under the superposition action of methane gas pressure field and detonation gas quasi-static stress field.关键词
瓦斯气体/煤体爆破/损伤断裂/作用机理Key words
methane gas/coal blasting/damage and fracture/action mechanism分类
矿业与冶金引用本文复制引用
褚怀保,王金星,杨小林,余永强,梁为民..瓦斯气体在煤体爆破损伤断裂过程中的作用机理研究[J].采矿与安全工程学报,2014,(3):494-498,5.基金项目
国家自然科学基金项目(50874039)；河南理工大学博士基金项目 （50874039）
