安阳矿区现采大煤为缓倾斜中厚煤层,平均厚度4.5米,倾角20°左右。62年建局以来,一直采用走向长壁、倾斜分层、爆破落煤、顶板全陷采煤法进行回采。但因地质构造变化,煤层倾角有时出现超过45°的急倾斜地段,沿走向数十米至一百几十米不等,从而给沿用上述常规采煤法带来很大困难。因走向长度不大,改变采煤方法不现实,以往都是跳开不采,重新开切眼外推。这样既浪费了国家煤炭资源,多掘巷道,而且增加了工作面搬迁的收尾、放大顶、设备支架转移和新开排等工作,不但费用大,不安全,还影响生产。为了解决上述问题,我们坚持原采煤方法不变而针对性地采取几项安全技术措施,81年和83年先后在积善矿42021和龙山矿13031两个工作面的回采实践中,都比较顺利的通过了45°以上的急倾斜地段,取得了较好的安全和经济效果。现以积善矿42021工作面为例,将其工作面概况和所采取的措施叙述如下。 Large mining coal Anyang mine is gently inclined medium thick seam, with an average thickness of 4.5 meters, inclination of about 20 °. 62 years since the establishment of the Bureau, has been used to move to the long wall, inclined stratification, blasting falling coal, coal roof mining method all-mining. However, due to the change of geological structure, the dip of coal seam sometimes appears to be sharply inclined over 45 ° and varies from several tens of meters to one hundred and tens of meters along the strike, which makes it difficult to follow the above conventional mining method. Due to the trend is not long, change the unrealistic mining method, in the past are not open jump, re-cut eye extrapolation. This will not only waste the country’s coal resources, dig more roadways, but also increase the finishing of the face relocation, enlargement of the top, equipment support and new work such as the relocation of ships, not only costly and unsafe but also affect the production. In order to solve the above problems, we insisted on the original coal mining methods unchanged and targeted to take several safety technical measures, 81 years and 83 years have successively in the Jinshan Mine 42021 and Longshan Mine 13031 two face recovery practices are relatively smooth Passed the steep slope above 45 ° and achieved good safety and economic results. Taking Jinshan Mine 42021 face as an example, the general situation of the face and the measures taken are described as follows.