摘要
基于我国大部分煤层渗透率低、煤层瓦斯抽采效率低的现状,对增加煤体渗透能力的多种技术进行了应力机制分析;分析表明,采用的多种技术的共同特点是降低煤体的有效应力,从而提高煤体的孔隙和裂隙发育程度,提高煤体的渗透能力。在理论分析和实验研究的基础上提出了声频振动波增透煤体的新思路,对防治煤矿瓦斯灾害和提高煤层气抽采率具有重要的参考价值。
Aiming at the current status of low permeability of coal body and low efficiency of coal gas extraction in China, techniques of coal body permeability increase were analyzed in terms of stress mechanism. The results showed that the common feature of the techniques is to decrease the effective stress of coal body, and then to in- crease development degree of porosity and cracks in coal body, and to improve permeability of coal body at last. Based on theoretical analysis and experimental study, a new idea of using mechanical vibration of sound waves to increase permeability of coal body was brought forward. It has important reference value to prevention of gas dis- aster and improvement of CBM exploitation efficiency.
出处
《安徽理工大学学报（自然科学版）》
CAS
2012年第4期14-17,共4页
Journal of Anhui University of Science and Technology:Natural Science
基金
国家自然科学基金资助项目(40972105)
安徽省高校自然科学研究资助项目(KJ2011B181)
宿州学院教授(博士)科研启动基金资助项目(2011jb05)
关键词
瓦斯
渗透率
声波
gas
permeability
sound wave
