The roof falling accident is the most commonly occurring accidents in coal mines mining process.
2
分析了冒顶事故的发生原因和预兆,提出了预防措施。
The reason and forecast of roof falling are analyzed. And the preventive measures are provided.
3
本文以平邑石膏矿两次大的冒顶事故为资料背景,分析了矿柱、顶板系统的破坏机理。
With the two great roof-fall accident of Pingyi gypsum mine, this paper analyzes the stability of pillars and roof system and the mechanism of destruction of pillars and roof.