摘要
以西山煤电集团有限责任公司屯兰矿18205运输平巷为研究背景,采用理论分析,数值模拟和现场工程实践相结合的方法分析巷旁支护体的稳定性。建立力学模型,计算得出巷旁支护体的切顶支护阻力和合理的充填宽度;建立数值计算模型验证合理的巷旁充填宽度为2.5m;现场工程实践表明计算得出的巷旁支护宽度可以有效控制围岩变形,巷旁支护体和顶板下沉量小,围岩变形量小。
Taking the 18205 haulage drift in Tunlan Mine of Xishan Coal and Electricity Co., Ltd. as the research background,this paper analyzes the stability of support body by gobside entry retained with the combined method of theoretical analysis,numerical simulation and the field engineering practice. The mechanical model is established to calculate the roof cutting support resistance and reasonable width of support body;the numerical stimulating model is built which verifies the reasonable filling width is 2.5 m;the field engineering practice proves that the support body with the calculated width can effectively control the deformation of surrounding rock：the support body and the roof subsidence are small and the surrounding rock deformation is little.
出处
《中国煤炭》
北大核心
2014年第7期53-57,125,共6页
China Coal
关键词
沿空留巷
巷旁支护
支护宽度
数值模拟
gobside entry retained
roadside support
support width
numerical simulation
