劈裂砂岩过流面积对渗流的影响研究

为寻求岩体渗流过流面积与渗流量的关系，应用CAD、ANSYS以及ArcGIS软件对不同劈裂面的砂岩岩样进行了岩柱劈裂面模拟，计算出了裂面面积，并进行了以过流面积为单影响因素的渗流试验。计算结果显示，随着过流面积的增加，渗流量与过流面积近于三次函数关系，且在施加不同围压与轴压下，这种关系没有改变，变化的只是渗透速度大小。该研究弥补了以往研究中不进行过流面积单影响因素试验的不足，对弄清实际工程中岩体裂隙及岩体结构面发育程度对渗流的影响具有一定的启示。

Experimental study on influence of passage area on seepage flow of split sandstone samples

The cleavage planes area of rock specimens was computed through the application of CAD,ANSYS and ArcGIS to obtain the relationship between passage area and seepage velocity,and an experiment was carried out taking the passage area as single influential factor.The results indicate that with the increase of passage area,the seepage velocity increases by a near-cubic equation;under different confining and axial compressions,the variation law of seepage velocity and passage area does not change except for the infiltration rate.This study fills up a deficiency that previous researches did not consider the single influential factor of passage area in those seepage tests,therefore it provides an important reference for the study on factors affecting the seepage process,including rock body fissures and growth of structural faces.