Study on the Relationship of the Brittle Deformation Mechanism and Permeability of Rocks
详细信息
- 责任者：Zhang Rui (School of Resources and Earth Science ; China University of Mining and Technology ; Xuzhou 221116 ; China) ; Jiang Zhenquan
- 刊名：Geological Journal of China Universities
- 出版年：2012
- 卷期：18(4)
- 关键词：脆性变形 ; brittle deformation ; 渗透率 ; permeability
- 页码：p.719-723
- 图表：2 illus., 1 table, 23 refs.
- 分类号：1702
- issnNo：ISSN1006-7493
- isbnNo：CN32-1440/P
摘要
In order to study the relationship of the brittle deformation mechanism and permeability of rocks, the curves of stress-strain and permeability-strain of rocks were analyzed. The results indicate that the permeability of rocks increases rapidly at the critical failure point because of the significant changes of the micro structure that resulted from the cluster grouping, mergence and transfixion of the internal micro fissure with the compaction, elastic deformation, and progressive failure.The strain at the critical point and turning point on a stress-strain curve can be analogized as those corresponding to the strain at the rapidly increased point and the peak point on the permeability-strain curve according to the renormalization theory. The conclusions are reasonable by the experimental studies and examples of statistical analyses.