摘要
以沈煤集团红菱煤矿保护层开采为工程实例,通过开采11#煤层,对存在煤与瓦斯突出的7#煤层和12#煤层进行卸压,研究保护层开采后采动裂隙分布规律。通过FLAC3D模拟采动后应力场和位移场变化情况、塑性区分布范围,分析了保护层开采后煤岩体采动裂隙的分布规律。
In this paper, study was made on the distribution law of mining-induced fractures after the extraction of protective seam by taking the extraction of protective seam in Hongling Coal Mine of Shenyang Coal Group as the engineering examples and through extracting No.11 seam to relieve gas pressure of No.7 and 12 seams liable to coal and gas outburst. And analysis was conducted on the distribution law of mining-induced fractures of coal and rock bodies after the extraction of protective seam through simulating the variation of stress and displacement fields and the distribution range of plastic zone after mining.
出处
《矿业安全与环保》
北大核心
2008年第5期1-3,6,共4页
Mining Safety & Environmental Protection
