关键词: 尾水出口, 堆积体, 边坡稳定, 优化治理

Abstract: The No. 11 deposit slope of Baihetan hydropwer station is located between the tailrace outlet and spillway tunnel on the left bank. It is basically stable as a whole, but the safety factor does not meet the design requirement. Instability will lead to the rise of downstream water level, which will affect the power generation, so the engineering treatment is necessary. After analysis, slope cutting was adopted as the main engineering treatment measure. The design was further optimized in implementation stage, which achieved good results, reduced construction difficulties and saved investment.

Key words: tailrace outlet, deposit, slope stability, optimized treatment