Numerical analysis method of fluid flow in fractured rock mass of dam foundation

被引：0
|
作者：
Jiang Z. [1 ,2 ]
Xiao Z. [1 ]
Tang D. [1 ,3 ]
机构：
[1] School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha
[2] Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province, Changsha
[3] Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha
来源：
Shuili Xuebao/Journal of Hydraulic Engineering | 2020年 / 51卷 / 10期
关键词：
Discrete fracture network; Embedded fracture element; Fluid flow in fracture; Rock mass of dam foundation;
D O I：
10.13243/j.cnki.slxb.20200016
中图分类号：
学科分类号：
摘要：
To predict seepage effect of fractured rock in 3 dimension space at engineering scale, based on hydraulic conductivity of rock matrix and fracture,expressions of permeability coefficient for embedded fractured element(EFE) was derived. Base on the model of embedded fracture element, a numerical simulation technique on behalf of discontinuously analytical method was proposed by combination of discrete fracture networks with continuum approach of seepage analysis. Examples were employed to validate the proposed method. The size effects of element were also studied on calculation accuracy and measurements for improvement of the calculation accuracy were then suggested. The case study shows that the EFE model for seepage analysis of fractured rock mass can properly simulate the seepage path and pore pressure distribution of dam foundation rock mass, and reveal the irregular distribution pattern of uplift pressure of dam foundation. © 2020, China Water Power Press. All right reserved.
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页码：1289 / 1298
页数：9
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