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万家寨水库修建后 ,使拐上至坝址多年不封河的河段封河 ,并对河曲河段及天桥电站凌情产生了一定影响。在现行的移民高程条件下 ,为保证库区防凌安全 ,水库不能按设计正常运行 ,必须降低库水位运用。凌汛期水库泄流要相对平稳。宜尽快把移民线由现行的 984m高程提高到 987～ 988m。建议研究如何利用开河时凌汛洪水进行水库排沙减淤方案 ,严禁向河道弃渣 ,改善库区河道边界条件。
After the Wanjiazhai Reservoir was built, it turned to Shuihe, a river that had been closed for many years to the dam site, and had a certain impact on the situation of the Hequ reach and Tianqiao Power Station. Under the current conditions of immigration elevation, in order to ensure the safety of the reservoir area, the reservoir can not operate normally according to the design and the reservoir water level must be reduced. Ling flood reservoir discharge to be relatively stable. As soon as possible to the immigration line from the current 984m elevation to 987 ~ 988m. It is suggested to study how to make use of flood-flood flood during silting to save sediment and sediment in reservoirs, and to forbid the spoil to the river and to improve the river boundary conditions in the reservoir area.