基于Mathew稳定图的采场顶板持续冒落临界阀值研究

采场顶板的稳定性关系到矿山安全生产及经济效益,同时也是选择采矿方法和地压控制方法的主要依据之一。通过采场顶板冒落规律的研究,针对香炉山钨矿目前采空区特点及范围,运用Mathews稳定图法确定采空区顶板持续冒落水力半径,并由此反算得出不同采场跨度下的顶板临界暴露面积阀值,为矿山安全开采提供了重要的基础资料和依据。

Study on the critical value of stope roof continuous collapse be based upon mathew stability graph

The stability of stope roof related to mine safety and economic benefits,but also was the primary reason for choice of mining methods and the approach of controlling ground pressure.Study on the law of stope roof collapse,for incense characteristics and scope of xianglushan tungsten ore mined-out area.mathew stability graph is used for ascertainment the hydraulic radius of stope roof continued collapse.and obtainted the critical threshold of stope roof under different span.the mine safety has provided an important basis for exploitation of information and evidence.