浅层煤矿开采中上覆岩复合压力拱分析研究  

Analysis and Research on Composite Pressure Arch of Overlying Rock in Shallow Coal Mining

作　　者：郑僖 Zheng Xi(Jinneng Holding Coal Industry Group Shuozhou Coal Electricity Co.,Ltd.,Huairen Shanxi 038300,China)

机构地区：[1]晋能控股煤业集团朔州煤电有限公司,山西怀仁038300

出　　处：《山西冶金》2023年第8期61-62,82,共3页Shanxi Metallurgy

摘　　要：针对薄基岩浅埋煤层开采过程中典型的压力拱结构,采用数值模拟和物理实验相结合的方法,分析了不同开采阶段近场和远场压力拱的相互作用,建立了矿区压拱的典型力学模型。得到了各开采阶段的主应力分布。采用数值模拟和实验相结合的方法,分析了浅埋煤水平开采上覆岩层薄基岩的应力发育情况。近场和远场复合压拱的演化特征对上覆岩层的稳定性和开采安全具有重要意义。In response to the typical pressure arch structure during the mining process of shallow coal seams with thin bedrock,a combination of numerical simulation and physical experiments was used to analyze the interaction between near field and far field pressure arches at different mining stages,and a typical mechanical model of mining area pressure arches was established.The principal stress distribution of each mining stage was obtained.The stress development of the overlying thin bedrock in shallow coal horizontal mining was analyzed using a combination of numerical simulation and experimental methods.The evolution characteristics of near-field and far-field composite pressure arches are of great significance for the stability of overlying strata and mining safety.

关 键 词：浅层开采 上覆地层 压力拱 不稳定 

分 类 号：TD327[矿业工程—矿井建设]