岩土力学Issue(8)：2163-2170,2178,9.
劈裂砂岩有、无砂粒填充条件下的多因素对渗流量影响对比分析
Comparative analysis of multiple factors affecting seepage flow of splitting sandstone with fillers or non-fillers
摘要
Abstract
Taking the splitting sandstone from Yichang as the research object, the paper respectively studies about seepage flow variation rules caused by axial compressions, confining pressures, splitting surface area, concave-convex height different, trace length, 2D projected area of splitting surface, import and export length and joint roughness. The results suggest that the axial compression and seepage flow are in linear increasing relation whether the specimen is filled or not;confining pressures and seepage flow are in a relationship of logarithmic decrement when the specimen is unfilled, while in linear relation as the specimen is filled. Under non-filler condition, the seepage area has a cubic function to the seepage velocity, while there is no influence under filling condition, and at the same time, the concave-convex height difference, 2D projected area have the same rule with seepage velocity. Analysis suggests that the influence on seepage passages of the three factors is far from that caused by fillers;under non-filler condition, the trace length reduces linearly with the seepage velocity;the joint roughness coefficient shows a quadratic functional relationship with the seepage flow whether the specimen is filled or not. These rules can guide the priorities of factors in the seepage measurement, and effectively reduce the measurement of those secondary factors and provide a reference for numerical simulation of seepage.关键词
劈裂砂岩/渗流量/凹凸高差/节理粗糙度系数Key words
splitting sandstone/seepage flow/concave-convex height different/joint roughness coefficient分类
建筑与水利引用本文复制引用
刘杰,李建林,胡静,蔡健,赵宗勇..劈裂砂岩有、无砂粒填充条件下的多因素对渗流量影响对比分析[J].岩土力学,2014,(8):2163-2170,2178,9.基金项目
国家重点基础研究发展计划(973)（No.2012CB426502）；国家自然科学基金资助项目（No.51279091）；中国水利水电科学研究院流域水循环模拟与调控国家重点实验室开放研究基金项目（No. IWHR-SKL-2012221）；宜昌市科学技术研究与开发项目（No. A2012-302-03）。 （973）
