基于锦凌水库泄水建筑物的方案比选研究

Comparative study of drainage building plans based on Jinling Reservoir

锦凌水库位于小凌河要道,该水库工程除保证水位在安全水位线以下和提供市民用水外,还需保持并优化水库地下水条件。该枢纽泄水建筑物有溢流坝段和底孔坝段,建筑物级别为2级。水库泄水建筑物的型式对下游消能冲刷、建筑物安全及工程投资影响甚大,应尽量发挥混凝土坝的特点,把泄水建筑物布置在坝体上。因此,为了选择泄水建筑物型式,结合地形、水文与地质条件,满足各建筑物安全运行要求,对水库泄水建筑物进行方案比选,最终确定方案为堰顶高程为51.30m、泄流堰宽为150.0m。

Jinling Reservoir is located at main trunk of Xiaoling River. The reservoir project not only should guarantee thewater level is lower than the safe line and provide citizen water supply, but also should maintain and optimize thegroundwater condition of the reservoir. The junction drainage building is composed of an overflow dam section and a bottomhole section. They belong to building level 2. The type of reservoir drainage buildings has a great influence on the downstream energy dissipation erosion, the safety of buildings and the investment of engineering. The characteristics of concrete dam should be played maximally. The drainage buildings are arranged on the hydrological and geological conditions. The safe operation requirements of all buildings should be met. Reservoir drainagebuilding plans are selected. In the final determination plan, the weir crest elevation is width is 150. 0m.