岩土力学Issue(1)：226-231,6.
深部开采圆形巷道围岩破损区与支护压力的确定
Determination of failure zone and support pressure of circular roadway under deep mining
李铀 1袁亮 2刘冠学 2金学玉 2薛俊华 2余国锋 2彭意 1张明2
作者信息
- 1. 中南大学 土木工程学院，长沙 410075
- 2. 平安煤矿瓦斯治理国家工程研究中心有限责任公司，淮南 安徽 232001
- 折叠
摘要
Abstract
It is shown that elastoplastic stress field of circular roadway, which is given by the classic plasticity mechanics, is not correct. Therefore, it affects rationality of stability evaluation and support design of circular roadway. Based on the accurate analytic solution obtained by the new solving system of plastic mechanics, failure zone, relationship between stratum residual strength and support pressure of circular roadway are studied in isotropic and homogeneous stratum. The following results are obtained:(1) Failure zone increases as mining depth increase, which is basically a linear relation. (2) Relationship among support pressure, depth of roadway, strength and residual strength of surrounding rock, Poisson's ratio and bulk density is established. These results will be of great help to support design.关键词
圆形巷道/围岩弹塑性应力场/破损区/支护压力Key words
circular roadway/elastoplastic stress field of surrounding rock/failure zone/support pressure分类
建筑与水利引用本文复制引用
李铀,袁亮,刘冠学,金学玉,薛俊华,余国锋,彭意,张明..深部开采圆形巷道围岩破损区与支护压力的确定[J].岩土力学,2014,(1):226-231,6.
