Journal of Food, Agriculture and Environment

Inverse analysis of rock mass permeability coefficient for extra high concrete arch dam

Author(s):

Xueqin Zheng ^{1, 2}*, Yiqing Lou ³, Dong Qin ^{1, 2}, Bin Fang ^{1, 2}, Hao Yuan ^{1, 2}

Recieved Date: 2013-05-27, Accepted Date: 2013-09-06

Abstract:

The seepage of arch dam is an important factor for the stability of the arch dam abutments which is mainly affected by work status of curtain and drainage as well as groundwater level variation on both sides. The seepage field of arch dam has the characteristic of whole flowing in three dimensions. In order to calculate the intra-area seepage field in such complex seepage control system and inverse rock mass permeability coefficient accurately, it is necessary to solve two major problems: the first one is the simulation solution of a free surface seepage field; and the second is the simulation problem of intensive scupper in the analysis of seepage control. This paper adopts improved element seepage coefficient matrix adjustment method to solve the free surface of unconfined seepage field, and simulate intensive drain holes by adjusting the permeability matrix drainage substructure. By this means, we can analysis the seepage field of engineering calculation area, and inverse rock mass permeability coefficient according to the neural network.

Keywords:

Concrete dam, rock mass permeability coefficient, neural network, drainage substructure, free spill boundary

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Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 3&4
Category: Environment
Pages: 2328-2332

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