特厚煤层综放面回风顺槽围岩稳定性研究  

Study on Surrounding Rock Stability in Return Air Entry of Fully Mechanized Caving Face with Extra-thick Coal Seam

作　　者：王云峰 Wang Yunfeng(Shouyang Jingfu Coal Industry Co.,Ltd.,Yangmei Group,Jinzhong,Shanxi 030600)

机构地区：[1]阳煤集团寿阳景福煤业有限公司,山西晋中030600

出　　处：《江西煤炭科技》2024年第2期95-98,共4页Jiangxi Coal Science & Technology

摘　　要：中煤塔山煤矿30503工作面开采特厚煤层,本文采用有限元FLAC^(3D)数值模拟软件,针对30503工作面新1巷、新2巷回风顺槽的稳定性进行了模拟计算,分析对比了新1巷充填与否情况下新2巷围岩塑性区演化及变形特征,确定合理的围岩稳定性控制方法。结果表明:不充填时新1巷围岩应力集中特征明显,围岩处于屈服破坏状态,难以保证煤矿正常开采;当填充新1巷、使用新2巷做回风顺槽时,新2巷围岩屈服破坏区域较小,围岩变形量少,满足使用要求,因此充填新1巷,新掘新2巷是确保30503工作面安全回采的最佳选择。The paper uses finite element FLAC^(3D) numerical simulation software to simulate and calculate the stability of new No.1 lane and new No.2 lane return air gateways at the 30503 working face of Tashan Colliery,China Coal,analyzes and compares the evolution and deformation characteristics of the plastic zone of the surrounding rock of New No.2 Lane under the condition of flling New No.1 Lane or not,and determines a reasonable method for controlling the stability of the surrounding rock,whose results show that filling the new No.1 lane and then excavating the new No.2 lane is the best choice to ensure the safe mining of the 30503 working face.

关 键 词：特厚煤层 回风顺槽 巷道围岩控制 

分 类 号：TD823.254[矿业工程—煤矿开采] TD322.4[矿业工程—矿山开采]