近距离下保护层矸石充填开采可行性理论分析

发布时间：2018-05-12 15:19

本文选题：弹性地基理论 + 矸石充填开采　；参考：《采矿与安全工程学报》2017年05期

【摘要】：为提高下保护层开采的适用性,将矸石充填法应用于下保护层开采。分析了充填开采的采场覆岩的弯曲下沉变形,得到了矸石充填开采采场顶板的下沉变形规律;以维持被保护煤层底板岩层稳定性为基础,建立了下保护层矸石充填开采的可行性理论判据。以贵州某矿下保护层开采为工程背景,设计了下保护层充填开采的充填参数,并对下保护层开采对上部煤层所造成的影响进行了分析。结果表明:当下保护层充填开采采取合理的充填参数时,即能保证下保护层开采不影响上部煤层的正常回采,又能保证上部煤层会受到下保护层采动而使其裂隙充分发育。
[Abstract]:In order to improve the applicability of the lower protective layer mining, the gangue filling method is applied to the lower protective layer mining. This paper analyzes the bending and sinking deformation of overburden rock in stope after filling mining, and obtains the subsidence deformation law of roof in mining stope with gangue filling, which is based on maintaining the stability of floor strata in protected coal seam. The theoretical criterion of the feasibility of the mining of coal gangue in the lower protective layer is established. Based on the mining of the lower protective layer in a certain mine in Guizhou province, the filling parameters of the backfill mining of the lower protective layer are designed, and the influence of the mining of the lower protective layer on the upper coal seam is analyzed. The results show that when reasonable filling parameters are adopted in current protection layer filling mining, it can ensure that the lower protective layer mining does not affect the normal mining of the upper coal seam, and that the upper coal seam will be mined by the lower protective layer and the fracture will be fully developed.
【作者单位】：湖南科技大学煤矿安全开采技术湖南省重点实验室能源与安全工程学院;
【基金】：国家自然科学基金项目(51474104) 湖南省煤矿安全开采技术重点实验室开放基金项目(201403)
【分类号】：TD823.7

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