碾盘山水库浸没问题研究

Research on inundation problem of Nianpanshan Reservoir

为了研究碾盘山水利水电枢纽工程水库浸没问题,为碾盘山水库蓄水后治理浸没灾害提供依据。采用解折法和数值模拟法,并参考碾盘山上游梯级丹江口水库浸没区判别方法及浸没程度评价和下游梯级兴隆水利枢纽库区两岸浸没治理,对水库产生浸没范围和影响程度进行综合判定。结果表明:通过解析法得到浸没区面积较数值模拟法大28.72 km^(2),验证了数值模拟法对水文地质参数、边界条件、降雨入渗补给量、侧向径流量、边界排泄量等参数敏感,尤其是地质体水文地质参数具有各向异性。

In order to study the inundation problem of Nianpanshan Reservoir and provide a basis for the control of inundation disasters after the storage of Nianpanshan Reservoir,a combination of analytical method and numerical simulation method were adopted,and the immersion range and impact degree of the reservoir was determined comprehensively by referring to the research and treatment of inundation problem of Danjiankou Reservoir at upstream and Xinglong Water Conservancy Hub at downstream.The area of severe and slight immersion calculated by analytical method was 28.72 square kilometre larger than that by numerical simulation method.It was verified that numerical simulation was sensitive to hydrogeologic parameters,boundary condition,precipitation recharge,lateral runoff and boundary discharge,and all the parameters were anisotropic.