为更好地预防低临界值瓦斯动力现象给煤矿安全生产带来的危害,通过对豫西三软煤田地区瓦斯地质条件,瓦斯含量、瓦斯压力及其梯度的统计分析,结合综合能量假说的分析论证方法,对低临界值瓦斯动力现象进行了研究。结果表明,煤层松软,煤体坚固性系数小时,瓦斯含量低、瓦斯压力小仍然易发生瓦斯动力现象。

In order to better prevent the low critical value gas dynamic phenomenon causing a danger to the mine safety production, with the statistic analysis on th e gas content, gas pressure and gas pressure gradient under the gas geological conditions in the three soft coal field of Yuxi Area, in combination with the analysis proo f method of the comprehensive energy presupposition, a study was conducted on the dynamic phenomenon of the low critical value gas.The results showed that when t he seam was soft and the coal ruggedness coefficient was low, the seam with low gas content and low gas pressure also would be easy to occur the gas dynamic phen omenon.

国家科技重大专项资助项目(2011ZX05034)；国家自然科学基金重点资助项目(40730422)；国家自然科学基金青年科学基金资助项目(40802032)；