摘要
长广矿区六矿井筒与工业广场煤柱是矿井生产后期的惟一可供开采的资源,讨论了该矿复杂地质条件下井筒与工业广场煤柱开采的可行性;采用分阶段对称跳采方法,制定了开采方案,煤柱设计采出率69%.分析了煤柱开采地表移动与井筒变形实测资料.实践和观测表明,该矿煤柱开采取得了良好的效果,可为类似条件矿井的工广煤柱开采提供借鉴.
Shaft coal-pillar as well as mine plant coal-pillar is the only mineable resources in later stage of No. 6 coal mine of Changguang mining district. Aiming at this situation, we discussed, in this paper, the possibility of the pillar mining under complicated geological conditions, proposed the mining method of symmetric jumping extraction by stages, and made the extraction plan suitable for actual situation of the coal mine, which results in a pillar recovery ratio of as high as 69%. In addition, we also analyzed the measured data of ground movement and deformation induced by the extraction of coal-pillar. The practice of extraction shaft coalpillar as well as mine plant coal-pillar shows that this method is successful and can be used as a reference for coal mines with similar conditions.
出处
《采矿与安全工程学报》
EI
北大核心
2008年第2期202-206,共5页
Journal of Mining & Safety Engineering
基金
国家自然科学基金重大项目(50490273)