摘要
以晋能控股煤业集团马脊梁矿为背景,研究地表拟建建筑物下方存在多煤层采空区的采空区治理问题。对该矿区不同煤层采空区煤柱及覆岩破坏情况进行稳定性分析,对建筑物载荷影响深度进行计算,分析拟建建筑物影响的采空区范围,确定了地面建筑物的治理类别、治理范围。最终提出采用地面注浆,针对不同埋深采空区采用不同注浆量的方案,通过注浆充填多层采空区,提高采空区煤岩层稳定性,确保地面建筑物的安全修建和使用。该研究对多煤层采空区上方地表拟建建筑物的修建及稳定性提供了分析方法和相应治理方案。
Taking the Majiliang Mine of Jinneng Holding Coal Industry Group as the background,this paper studies the goaf governance of the multi-coal seam goaf under the proposed building on the surface.Stability analysis was carried out on the failure of coal pillars and overlying rocks in different coal seams in the mining area,the influence depth of building loads was calculated,the scope of the goaf affected by the proposed buildings was analyzed,and the treatment categories and types of ground buildings were determined.Finally,it was proposed to use ground grouting,and use different grouting amounts for different buried depths of goaf.Through grouting to fill multi-layered goaf,the stability of the coal rock layer in the goaf could be improved,and the safe construction and use of ground buildings could be ensured.This study provided an analysis method and a corresponding treatment plan for the construction and stability of the proposed buildinged on the surface of the multi-coal seam goaf.
作者
马壮
朱广安
蒋启鹏
MA Zhuang;ZHU Guang-an;JIANG Qi-peng(Shaanxi Coal Industry Group Huangling Jianzhuang Mining Co.,Ltd.,Yan′an 727304,China;Xi′an University of Science and Technology,Xi′an 710054,China)
出处
《煤炭科技》
2022年第2期75-79,共5页
Coal Science & Technology Magazine
基金
国家自然科学青年基金(51904235)。
关键词
多煤层采空区
覆岩破坏
影响深度
采空区范围
注浆
multi-coal seam goaf
overburden damage
influence depth
scope of goaf
grouting
