摘要
贵州地区由于封闭性、压扭性断层较多,不利于瓦斯自然释放,导致瓦斯聚集而易在开采中发生煤与瓦斯突出事故,这对矿井安全高效生产极为不利。通过理论分析并结合数值模拟,主要研究了逆断层条件下不同倾角的逆断层对煤与瓦斯突出的影响。研究结果表明,倾角为60°的断层对煤与瓦斯的突出危险性影响最大,其次是45°;角度越小的断层越容易受到开采扰动的影响;顶板的冲击频率以及冲击强度是煤与瓦斯突出的诱因之一。
Due to the large number of closed and torsional faults in Guizhou, gas accumulation is not conducive to natural gas release, which leads to coal and gas outburst accidents in mining and is extremely detrimental to the safe and efficient production of mines. Through theoretical analysis and numerical simulation, the influence of inverse fault on coal and gas outburst is studied.The results show that the dangerous impact of fault with dip angle of 60° on coal and gas outburst is the biggest, the second is45°; the smaller the angle of the fault, the more susceptible of the fault affected by mining disturbance; the impact frequency and impact strength of roof are one of the causes of coal and gas outburst.
出处
《煤矿安全》
北大核心
2017年第11期171-174,共4页
Safety in Coal Mines
基金
国家自然科学基金资助项目(51574093
51427804)
贵州省高层次创新型人才培养资助项目(黔科合人才(2016)4011号)
贵州大学研究生创新基金资助项目(研理工2017083)
关键词
断层活化
煤与瓦斯突出
数值模拟
逆断层倾角
冲击强度
fault activation
coal and gas outburst
numerical simulation
reverse fault dip
impact strength
