垂直交叉裂隙岩体渗透系数与裂隙特征关系试验研究  

Experimental study on relationship between permeability coefficient and fracture characteristics of vertical cross fractured rock mass

作　　者：韩杨[1] 高新强[2] 张亚鹏[1] 

机构地区：[1]河南城建学院土木与交通工程学院,河南平顶山467036 [2]石家庄铁道大学土木工程学院,河北石家庄050043

出　　处：《河南城建学院学报》2016年第6期11-15,共5页Journal of Henan University of Urban Construction

基　　金：国家自然科学基金(51378321);河北省自然科学基金(E2014210131)

摘　　要：采用巴西劈裂生成垂直交叉裂隙的方法来模拟隧道内灰岩张性裂隙。在岩石多功能试验机上开展垂直交叉裂隙岩体渗透系数与裂隙特征关系试验研究,主要研究了裂隙面积、粗糙度系数对裂隙渗透系数的影响。试验表明,垂直交叉裂隙渗透系数与裂隙面积呈n次方关系,随着粗糙度系数的增大,拟合函数由二次形式过渡到三次形式,且粗糙度系数靠近10时为过渡拐点,试验成果为裂隙岩体渗流场特征分析奠定了基础。Using the method of the Brazil split to produce a vertical cross fracture to simulate the fracture of the rock mass in the tunnel. Experimental study was studied on the relationship between permeability coefficient and fracture characteristics of vertical cross fractured rock mass on the rock multi-function testing machine,the influence of fracture area and roughness coefficient on the permeability coefficient of the fracture. Test showed that the relationship between the permeability coefficient and the fracture area is n times in the vertical cross fracture,with the increase of the roughness coefficient,the fitting function transits from quadratic form to cubic form,and the roughness coefficient is close to 10 as the transition point. The experimental results lay the foundation for the analysis of seepage field in fractured rock mass.

关 键 词：垂直交叉裂隙 渗透系数 裂隙面积 粗糙度系数 三轴试验 

分 类 号：TU45[建筑科学—岩土工程]