结合水动力学原理在旬阳水电站安康城区及周边浸没研究中的应用

旬阳水电站库尾安康城区及周边地区系汉江左岸河流阶地和高、低漫滩, 具有典型的二元结构特征, 其中高漫滩表部普遍分布有较厚的人工填土。本文在浸没研究中应用结合水动力学原理以及粘性土的渗流特征, 确定测压水位和粘土层含水带水位关系, 针对不同建筑物的基础类型、埋深、填土层厚度、郊区农作物类型等, 确定不同的浸没临界深度。并通过7个不同正常蓄水位工况的地下水壅高计算和粘土层内的含水带埋深计算, 分析和研究浸没程度和范围, 最终确定合理的正常蓄水位, 为完成本工程水库移民安置工作提供了可靠的地质依据。

APPLICATION OF BONDWATER DYNAMIC THEORY TO SOIL SUBMER GENCE IN ANKANG CITY AND SURROUNDING AREAS ADJACENT XUN YANG HYDROPOWER STATION

Ankang C ity and the surrounding areas adjacent to Xunyang Hydropow er S tation reservo ir ta il zone lo ca te on the terrace and the h igh- and low floodpla in of the left bank of the H anjiang R iver. The ground has the typ ical dua listic- structure characteristics. The surface layer of the h igh floodp la in genera lly d istributes relatively th ick artif icial fil.l The bond w ater dynam ic theory and the infiltration flow characteristics of the clay so il are ap plied to de term ine the re lations among the pressurew ater level and the aqu ifer belt of clay layerw ater leve.l In th is research, different submergence cr itical depths are defined by foundation types, depths of bur ia,l fill layer th ick ness of different buildings and the type o f crops of suburbs, etc. the paper calcu lates the g roundw ater Backwa ter V alue and the burial depth o f clay layerw ater- bearing zone in seven d ifferent normal impounded level cond itions to investigate the submergence area and degree. A s a resul,t a reasonable norma l impounded level is determ ined ul t imate ly. Th is result can prov ide a re liab le geological basis for them igration resettlementw ork of th is pro ject reser vo ir area.