某水库枢纽大坝坝址与坝型比选

Comparison and Selection of Dam Site and Dam Type for a Reservoir Hub Dam

水库枢纽大坝坝址与坝型比选是水库工程规划设计的重要内容,处于整体工程建设环节的关建位置,对水库高质量发展具有十分重要的工程意义。为此,结合教堂水库枢纽大坝坝址与坝型比选实践案例展开分析研究。结果表明,从流域概况、工程任务及规模和工程等级及标准等主要方面概要了解水库工程基本状况;进而综合来水、地形地质、布置、施工、材料、移民征地、环境影响、工程投资和运行维护等多方面因素,着重就上、中、下三个初选坝址方案优化分析,经科学比选,最终优选上坝址方案以确定水库坝址。同时根据上坝址地形地质条件,提出混凝土拱坝和混凝土重力坝两种坝型方案,比较择优;经综合比较优选混凝土重力坝作为确定坝型。可为类似水库大坝坝址与坝型比选提供借鉴参考。

The comparison and selection of dam site and dam type is an important part of reservoir engineering planning and design.It is a crucial part in the overall engineering construction process and has great engineering significance for the high-quality development of reservoirs.Therefore,an analysis and research will be conducted based on the practical case study of the comparison and selection of the dam site and dam type for the Church Reservoir Hub.The results indicate that the basic situation of reservoir engineering is summarized from the main aspects of watershed overview,engineering tasks and scale,engineering level and standards,etc.Furthermore,taking into account of various factors such as incoming water,terrain and geology,layout,construction,materials,resettlement and land acquisition,environmental impact,engineering investment,and operation and maintenance,the optimization analysis of the upper,middle,and lower dam site schemes is emphasized.After scientific comparison,the upper dam site scheme is ultimately selected as the reservoir dam site.At the same time,according to the topographical and geological conditions of the upper dam site,two dam schemes of concrete arch dam and concrete gravity dam are proposed and compared.After comprehensive comparison,the concrete Gravity dam is selected as the dam type.This can provide reference for the comparison and selection of dam sites and types for similar reservoirs.