摘要
冲积层疏水沉降时的井壁受力机理及定量分析,是研究和处理徐州、淮北和大屯矿区井壁破坏事故的重要依据。本文根据土力学原理建立这一问题的数学模型,导出了井壁在疏水含水层处的附加轴向应力σ_z及其极限值σ_(zm)的计算公式为在此基础上,对冲积层疏水沉降时的井壁受力规律、强度检验和减小附加应力的途径进行了较深入的讨论。
Mechanical and quantitative analysis of shaft lining subjected to alluvium settlement resulted from water drainage are important criteria for studying the lining failure encountered in Xuzhou, Huaibei and Datun mine areas. According to the mathematic model which is established in the principles of geotechnics, formulas of additional axial stress (σ_z) and its limit (c2m) at the roof of aquifer are represented by
The mechanical behavior and strength criterion of the lining are discussed. An approach for reducing the additional axial stress are also suggested.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1991年第4期54-62,共9页
Journal of China Coal Society
关键词
冲积层
疏水
沉降
井壁
受力
alluvium settlement due to water drainage
analysis of loading on shaft lining
failure of lining in freezing
