论文部分内容阅读
冒顶长期以来一直为人们所关注,它不仅关系着矿工的人身安全,而且在开采范围内发生大面积突然冒顶时,对地面的财产和居民的生命同样也是一种威胁。
The roof has long been of concern to people. It not only relates to the personal safety of the miners, but also threatens the property on the ground and the life of the residents when a large area suddenly falls from the top of the area.