我矿是1960年投产的一座中型矿井,核定年生产能力为80万t。过去,由于我们对顶板管理重视不够,抓得不力,顶板事故较多。1970年～1983年,因顶板事故工亡32人,占工亡总数的57.2％。1983年以来,我们认真总结经验教训,下决心“以严治矿”,围绕矿井安全整顿,狠抓了采掘工程质量,加强了顶板管理,从而使安全状况逐年好转。1983年以来,全矿杜绝了顶板伤亡事故,回采工程质量合格率和一级品率都达到了100％;开掘工程质量合格率达到100％,一级品率达到了98.1％,名列全 Mine was put into operation in 1960, a medium-sized mine, the annual production capacity of 800,000 t approved. In the past, due to inadequate attention to the roof management, poor grasp, roof accident more. From 1970 to 1983, 32 people were killed due to roof accidents, accounting for 57.2% of the total number of work-deaths. Since 1983, we conscientiously sum up experiences and lessons and determined that we should “rigorously treat mines” so as to rectify the safety of mines, pay close attention to the quality of mining works and strengthen the roof management, so that the security situation will improve year by year. Since 1983, the whole mine put an end to the roof casualties, the quality of the passing project and the first-grade product rate reached 100%; digging quality of the project reached 100%, a product rate reached 98.1%, ranked the first