摘要
通过大量的现场测试发现 ,含瓦斯煤岩是一个复杂的系统 ,煤体应力的变化是引起其他一系列变化的主导因素。随煤体应力的变化 ,孔隙压力呈指数形式变化 ;介质的渗透性受孔隙压力梯度的控制。
The purpose of this paper is to analyze the variation of pore pressure and flow amount of gas in the course of mining by a great deal of site tests. The result shows that the coalbed containing gas is a complex system. The key factor causing the system to change is the stress in coal bed. The pressure of gas increases exponentially with increasing stress in coal bed; and the gas seepage is controlled by gradient of gas pressure.
出处
《工程地质学报》
CSCD
2002年第4期404-407,共4页
Journal of Engineering Geology
基金
四川省重点应用基础研究项目 (编号 :川科委技 ( 1990 ) 0 0 7)
