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.
出处
《中国煤炭》
北大核心
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)
关键词
软岩巷道
吸水膨胀
水理性质
变形量计算
soft rock tunnel
water swelling
hydrogeological properties
deformation calculation
