由于煤炭开采规模越来越大,特别是在进行大规模井下煤炭开采时,常使被开采煤层的顶、底板岩体活动加剧,甚至造成重大顶板事故。因此,煤矿现场岩体活动的观测研究已成为解决地下煤炭安全开采的重要手段之一。在这方面大同煤矿使用钻孔电视成功地进行了大量顶板岩体活动观测,并取得了很好的效果。 Due to the increasing scale of coal mining, especially during the large-scale underground coal mining, the roof and floor rock mass activities of the coal seam to be exploited are often aggravated and even cause major roof accidents. Therefore, the observation and study of the rock mass activities in the coal mine has become one of the important means to solve the safe mining of underground coal. In this aspect, Datong Coal Mine successfully conducted a large number of roof rock mass activities using borehole television and achieved good results.