软岩巷道吸水膨胀变形量计算分析  

Calculation analysis on water swelling deformation of road in soft rock

作　　者：王波[1] 

机构地区：[1]煤炭科学研究总院北京天地华泰采矿工程技术有限公司,北京市朝阳区100013

出　　处：《中国煤炭》2011年第5期58-60,93,共4页China Coal

基　　金：天地科技青年创新基金(TZ-JJ-10-HT-2)

摘　　要：为定量分析软岩吸水膨胀引起巷道围岩的变形量,基于湿度应力场理论和弹性变形理论,推导出了软岩巷道吸水膨胀变形量的计算公式;给出了公式中膨胀系数和含水率变化函数的确定方法;结合典型软岩工程——龙口北皂煤矿海域运输巷,在实验室内测试了运输巷围岩的水理性质;根据得出的水理参数,确定了运输巷的膨胀系数和含水率变化函数,代入计算公式得出了变形量的分布规律。The main reason of soft rock tunnel deformation destruction on surrounding rock is water swelling.In order to analyze the deformation degree,a calculation formula is concluded on the basis of humidity stress field and elastic deformation theory.Also a determination method of the expansion coefficient and water content variation function is given in the formula.Besides,the hydrogeological properties in the transportation tunnel were tested in laboratory which integrated the typical example-Longkou Coal Mine Area.According to the hydrogeological properties,the expansion coefficient and water content variation function are decided,and also the deformation distribution is studied.

关 键 词：软岩巷道 吸水膨胀 水理性质 变形量计算 

分 类 号：TD322[矿业工程—矿井建设]