伊犁一矿砾石土三轴渗透试验研究  

Seepage experimental study of triaxial test of gravel soil in Yili's first coal mine

作　　者：岳中文[1] 杨仁树[1,2] 孙中辉[1] 窦波洋[1] 韩朋飞[1] 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100083 [2]深部岩土力学与地下工程国家重点实验室,北京100083

出　　处：《中国矿业》2010年第12期98-101,共4页China Mining Magazine

基　　金：国家科技支撑计划(2007BAK24B00);中央高校基本科研业务费资助

摘　　要：为了探寻伊犁一矿砾石土级配、初始孔隙比和水头压力对渗透系数的影响,利用多功能静动三轴试验机室内试验方法,进行不同级配、初始孔隙比和水头压力的砾石土渗透试验研究。试验结果表明:①伊犁一矿砾石土渗透系数k和初始孔隙比的关系是,渗透系数k随着初始孔隙比e0的增大而增大;②渗透系数k也随着水头压力的增大而增大,同时渗透系数和水头压力具有线性的关系;③在相同的水头压力下,渗透系数k随着围压σ3的增大而减小。研究结果,为伊犁一矿井筒渗流稳定分析提供更加合理的计算参数。In order to study the affection of graded gravelly soil,the initial void ratio and head pressure on the permeability coefficient in Yili＇s First Mine,Multi-static and dynamic triaxial test machine with different levels of soil,initial void ratio and head pressure to research the permeability of gravelly soil in laboratory was used.The results show that ①the relationship between permeability coefficient kand initial void ratio e0 is that permeability coefficient k increases with the initial void ratio e0 increasing.② Permeability coefficient k also increases with the head pressure increasing,and permeability and head pressure has a linear relationship.③ With the same head pressure,the permeability coefficient k reducing with the confining pressure σ3 increasing.The results provide more reasonable calculation parameters for the stability analysis of shaft seepage flow in Yili＇s First Mine.

关 键 词：砾石土 三轴试验 孔隙比 水头压力 围压 渗透系数 

分 类 号：TD2[矿业工程—矿井建设]