摘要
鉴于岩石渗流理论尚不成熟的现状,采用实验模拟工程实际的手段,利用MTS伺服机进行瞬态法水渗实验,对实验结果以多项式形式拟合了岩石渗透率-应变方程。实验表明,在岩石变形过程中,渗透率与变形形式密切相关;所有k-ε曲线都有最低点,岩石在弹性阶段其渗透率变化不大;岩石产生结构破坏后其渗透率远大于弹性阶段的渗透率,最高渗透率大多发生在软化阶段,少数发生在流动段末尾。
Since rock seepage theories are underdeveloped as yet, a testing technique is used to sim- ulate the engineering problem, and the MTS testing system is employed to undertake transient water-seepage experiments. Some of test results are fitted as permeability-strain equations with polynomial types. The analysis results suggest that ： in the course of rock deformation, permeability has close relation to deformation situation; all the k-ε curves have the minimum values, and in elastic stage, rock permeability shows a slight change; after the failure of rock structures, the rocks give the permeability dramatically greater than that of elastic stage. The maximum permeability usually appears in softening stage, or sometimes appears in the end of flow stage.
出处
《黑龙江科技学院学报》
CAS
2007年第2期94-97,共4页
Journal of Heilongjiang Institute of Science and Technology
基金
中国博士后基金项目(20040350222)
江苏省自然科学基金项目(BK2004033)
江苏省博士后科研资助计划项目
关键词
岩石
渗透
瞬态法
应变相关
rock
seepage
transient-flow method
strain dependence
