Permeability Evolution of an Intact Marble Core during Shearing under High Fluid Pressure
Permeability Evolution of an Intact Marble Core during Shearing under High Fluid Pressure
复制标题
高流体压力剪切过程中完整大理石芯的渗透率演变
DOI：
10.1155/2021/8870890
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发表时间：
2021-01
期刊：
影响因子：
1.7
通讯作者：
Hu Shaobin
中科院分区：
文献类型：
--
作者：
Wang Yuan;Jiao Yu;Hu Shaobin
水-力耦合作用下岩体的递进剪切破坏是影响深埋高压导流隧洞长期稳定的关键因素。在这项研究中，我们使用实验和数值分析来量化在不同围压和流体压力下，完整大理岩试样从剪切破坏到剪切滑移过程中渗透率的变化。实验结果表明，在低有效正应力条件下，裂缝渗透率与剪切位移呈正相关。有效正应力越高，渗透率越低，随着剪切位移的增加，渗透率呈幕式变化。基于三维激光扫描断裂面生成的点云数据建立数值模型，发现在高有效应力条件下，存在一些接触区域阻塞了渗流通道。这种类型的接触面积在确定给定岩石样品的裂缝渗透率演化中起着关键作用。
The progressive shear failure of a rock mass under hydromechanical coupling is a key aspect of the long-term stability of deeply buried, high fluid pressure diversion tunnels. In this study, we use experimental and numerical analysis to quantify the permeability variations that occur in an intact marble sample as it evolves from shear failure to shear slip under different confining pressures and fluid pressures. The experimental results reveal that at low effective normal stress, the fracture permeability is positively correlated with the shear displacement. The permeability is lower at higher effective normal stress and exhibits an episodic change with increasing shear displacement. After establishing a numerical model based on the point cloud data generated by the three-dimensional (3D) laser scanning of the fracture surfaces, we found that there are some contact areas that block the percolation channels under high effective stress conditions. This type of contact area plays a key role in determining the evolution of the fracture permeability in a given rock sample.
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影响因子：
2.7
作者：
R. Zimmerman;G. Bodvarsson
通讯作者：
R. Zimmerman;G. Bodvarsson
DOI：
10.1016/j.ijrmms.2005.12.001
发表时间：
2006-07
影响因子：
7.2
作者：
K. Matsuki;Y. Chida;K. Sakaguchi;P. Glover
通讯作者：
K. Matsuki;Y. Chida;K. Sakaguchi;P. Glover
影响因子：
6.2
作者：
Lee, HS;Cho, TF
通讯作者：
Cho, TF
DOI：
10.1016/s1365-1609(00)00079-4
发表时间：
2001-04-01
影响因子：
7.2
作者：
Olsson, R;Barton, N
通讯作者：
Barton, N
影响因子：
5.3
作者：
Yinlin Ji;W. Wanniarachchi;Wei Wu
通讯作者：
Yinlin Ji;W. Wanniarachchi;Wei Wu