Reservoir leakage of complex karst area based on numerical simulation

It is thought highly on feasibility and safety evaluation in karst region particularly in complex geological environmental conditions. In this article, a pumped storage power station in a karst area of Shaanxi province was taken as an example, karst development law and hydrodynamic condition of upper reservoir were analyzed, and a numerical simulation method was used to make fine description of space form of complex karst channel in reservoir, so as to predict potential karst leakage channel. The prediction results showed that three karst channels would be serious leakage after the completion of the reservoir, of which the maximum was “First day”, with the leakage of 4058.89m3/d, and the leakages of foundation and lodgepole pine beam were 3564.69m3/d and 3085.23m3/d respectively. However, the leakages of karst channels decreased obviously after being applied the impervious curtain measures.

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