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栗子坪水电站位于嵩县德亭乡伊河干流,1975年3月建成投产,为伊河干流水电梯级开发规划嵩县境内的第4级电站。电站设装机2×800kW,设计多年平均发电量700万kWh。渠首坝坝型为桩基上的浆砌石重力坝。建成以来,虽经过多次水毁后的加固修复,但坝下基础已经部分掏空,坝下游形成冲坑,危机渠首坝的安全。文章通过总结历次加固修复的经验与教训,结合渠首坝地质、地形和水文条件,通过方案此选,提出了岩基上重力坝加固改造方案。对于解决长期困扰渠首坝安全问题具有一定指导意义。
The Liziping Hydropower Station is located in the main stream of Yi River, Deling Township, Song County. It was completed and put into production in March 1975 and planned to be the No.4 power station in Song County for the hydropower development of the Yi River. Power station installed machine 2 × 800kW, designed for many years the average generating capacity of 7000000 kWh. Canal dams dam foundation for the masonry gravity dam. Since the completion of construction, although after many water damage reinforcement, but under the foundation of the dam has been partially emptied, the dam downstream to form a pit, the crisis ditch dam safety. Through summarizing the experiences and lessons of previous reinforcement and restoration, combined with the geological, topographic and hydrological conditions of the drainage dam, this paper proposes a scheme of strengthening and rebuilding the gravity dam on the rock foundation by means of this option. It is of guiding significance for solving the long-term safety problems of canal dams.