Journal
GEOLOGIA CROATICA
Volume 72, Issue -, Pages 47-56Publisher
CROATIAN GEOLOGICAL SURVEY
DOI: 10.4154/gc.2019.24
Keywords
monolithic seepage problem; drainage system; free surface; finite element method
Categories
Funding
- National Key Technologies Research AMP
- Development program [2017YFC0804600]
- National Natural Science Foundation of China [51379220]
Ask authors/readers for more resources
After construction of a dam impounding water in a reservoir, a monolithic seepage field develops in the surrounding rock mass. Here, a new finite element method is proposed for determining the shape and characteristics of the 3D monolithic seepage field including the free surface, considering complex drainage systems consisting of densely-spaced drainage holes and drainage galleries. To this end, the previously proposed virtual flux method is improved by a refined numerical integration scheme and a regularized Heaviside function for distinguishing the subregions below and above the free surface within a particular finite element. Leakage and overflow drainage holes are modeled as internal boundaries. The proposed numerical method is verified by an academic example, for which the analytical solution is available. Finally, the numerical simulation of the seepage field developing in the vicinity of a high dam and underground power house, constructed in the context of a hydropower plant project in China is used to show its application to a problem in engineering practice.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available