冲积层疏水沉降时的井壁受力分析  

ANALYSIS OF LOADING ON SHAFT LINING SUBJECTED TO ALLUVIUM SETTLEMENT DUE TO WATER DRAINAGE

作　　者：楼根达[1] 苏立凡[1] 

机构地区：[1]煤炭科学研究总院北京建井研究所

出　　处：《煤炭学报》1991年第4期54-62,共9页Journal of China Coal Society

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.

关 键 词：冲积层 疏水 沉降 井壁 受力 

分 类 号：TD265.32[矿业工程—矿井建设]