- 责任者：Liu Qisheng (Xi’an Branch ; China Coal Research Institute ; Xi’an 710054 ; China)
- 刊名：Coal Geology & Exploration
- 出版年：2009
- 卷期：37(2)
- 关键词：岩体力学 ; rock mechanics
- 页码：p.32-35
- 图表：8 illus., 7 refs.
- 分类号：1702
- issnNo：ISSN1001-1986
- isbnNo：CN61-1155/P
The effect of stress on hydrogeological conditions or permeability of water-bearing media should follow some laws or principles. Deformed and crashed rocks induced by change of geo-stress fields provide space for groundwater storage and flow. Groundwater adjusts water-bearing space and dilatates fractures by flowing and press transferring. This is one way of coupling of liquid and solid under large deformation or rock failure. Investigations indicate that porosity and permeability loss in fractured rocks are greater than that in porous rocks or capillary rocks, permeability changes are always larger than porosity changes. Porosity or permeability changing rules of porous rocks with variation of effective stresses can be described as the index function, the model of power exponent functions is suitable for those of fractured rocks, and the model of the quadratic parabola is suitable for capillary rocks.