房柱式采煤采空区遗留煤柱稳定性综合评价

Comprehensive Evaluation on Stability of Coal Pillar Left in Goaf of Room and Pillar Mining

房柱式采煤采空区遗留的大量煤柱,影响采空区场地稳定性,存在很大的安全隐患。基于对煤柱稳定性的主要影响因素以及可能引起的不利情况的深入探讨,依据最不利条件与主控因素优先原则,对煤柱的稳定性进行综合评价。实例分析表明,综合评价方法更为可靠与适用,为房柱式采空区场地稳定性评价提供了重要理论依据。

There were many coal pillars left in the goaf of the room and pillar coal mining.Those coal pillars would affect to the site stability of the goaf and would have high hidden dangers.Based on the deep discussion on the major influence factors of the coal pillar stability as well as the unfavorable condition possibly occurred,according to the most unfavorable condition and the priority principle of the major factors,a comprehensive evaluation was conducted on the stability of the coal pillars.The case analysis showed that the comprehensive evaluation method would be more reliable and suitable and could provide the important theoretical basis to the evaluation on the site stability of the room and pillar mining goaf.