采动卸压区域瓦斯解吸规律研究

摘　要:为了找到采动卸压区域瓦斯解吸规律，对采动卸压区域瓦斯解吸规律进行了数理分析和公式推演,找到了等效负压驱动效应和解吸瓦斯应力理论极大值;结合现场试验分析，探明了采动卸压条件下瓦斯解吸规律。结果表明：采动卸压区域煤体应力变化是瓦斯解吸的原始驱动力，且由于等效负压驱动效应的存在呈现了瓦斯压力峰值落后于煤体应力峰值现象，且瓦斯压力峰值小于理论极大值。

关键词:卸压 瓦斯解吸 瓦斯压力 煤体应力 等效负压驱动效应

分类号:　X936 TD712Study on gas desorption law of mining pressure relief areaLI Yao-bin , LI Zhong-qing , LIU Jian (1. Key Laboratory of Mining Coal Safety and Efficiently Constructed by Anhui Province and Ministry of Education, Huainan 232001, China; 2. School of Energy and Safety, Anhui University of Science and Technology, Huainan 232001, China)Abstract:To find the gas desorption law of mining pressure relief area, mathematical analysis and formula deduction of gas desorption law of mining pressure relief area are carried out, equivalent negative pressure drive effect and the theory maximum stress of gas desorption are found. And then combined with field test analysis, the gas desorption law is verified. The results showed that the coal stress variation of mining pressure relief area is the original impetus of gas desorption,and due to equivalent negative pressure drive effect the peak gas pressure shows little behind the peak coal stress, and peak value of gas pressure is less than the theory maximum.

Keyword:pressure relief; gas desorption; gas pressure; coal stress; equivalent negative pressuredrive effect