TY - JOUR A2 - Zhang, Hualei AU - Pu, Shijiang AU - Wu, Guiyi AU - Liu, Qinzhi AU - Wang, Yuliang AU - Li, Qiang AU - Xiong, Yu PY - 2022 DA - 2022/03/21 TI - Determination of Reasonable Width of Filling Body for Gob-Side Entry Retaining in Mining Face with Large Cutting Height SP - 1774110 VL - 2022 AB - When gob-side entry retaining is adopted in the mining face with large cutting height, due to large stope space, strong dynamic pressure, and other reasons, the filling body is usually broken and unstable due to improper width of filling body, and the stability of surrounding rock of a roadway is poor.以Shaqu矿实战项目为后台,分析高矿场侧端保留稳定因子,并计及平面压力和覆盖填充体,搭建斜面保留路机模型,简化填充体保留宽度计算法,量化获取填充体合理宽度通过数值模拟和现场测试的监测结果验证保留宽度填充体计算结果的合理性结果显示,如果填充体宽度太小,它无法承载覆盖层负载,结果填充体破片填充体宽度越大,提供截取阻抗力越大,可及时减少路面和填充体以上的压力,保存路越稳定,但宽度提高到一定值时,路旁岩石移位变化微小。当填充体宽度为4m时,可保证曲面项保留稳定性SN-1468-8115UR-https://doi.org/101155/2022/1774110DO-10.1155/2022/1774110JF-GeofluidsPB-HindawiKW-ER