南京市石塘水库降等方案论证及对策分析

Demonstration and Countermeasure Analysis of Shitang Reservoir Downgrading in Nanjing

摘要:

石塘水库为小二型水库，位于南京市溧水区永阳街道境内，属秦淮河水系，主要功能为防洪、灌溉。该水库始建于1975年，随着溧水城区的快速发展，水库周边逐步纳入城市建设用地，水库的来水量较少，基本无防洪任务，且水库下游已无灌溉农田，因此水库灌溉功能也丧失。结合现场调查及现状地形测量等基础资料，通过洪水复核计算，对水库进行降等论证，分析现状水库降等的适用条件，并制定对策与管理措施，确保水库降等后工程的安全进行和正常管理。

Abstract:

Shitang Reservoir is a small type II reservoir, located in Yongyang Street, Lishui District, Nanjing. This reservoir belongs to the Qinhuai River system and its main functions are flood control and irrigation. The reservoir was built in 1975. With the rapid development of Lishui urban area, the surrounding area of the reservoir is gradually incorporated into the urban construction land. The amount of incoming water in the reservoir is small, therefore, there is basically no flood control task, and there is no irrigated farmland downstream of the reservoir. Consequently, the irrigation function of the reservoir is lost. Combined with the basic data such as field investigation and current topographic survey, the downgrading of the reservoir is demonstrated through the flood recomputation. The applicable conditions of the current reservoir downgrading are analyzed, and the countermeasures and management measures are formulated to ensure the safety and normal management of the project after the reservoir downgrading.