摘要
我国中小型水库众多,坝型大多数为土石坝,但对中小型水库土石坝工程病险规律的研究不足。通过构建中小型水库土石坝工程大坝安全评价层次结构模型,基于大坝安全风险和病险频度综合权重分析,利用层级分析法计算权重,绘制帕累托图,量化分析得出中小型水库土石坝工程主要病险指标和因素。研究表明,中小型水库土石坝工程病险特点具有均衡性、全面性、规律性;水库主要病险指标依次是渗流安全问题、结构安全问题、防洪能力不足;水库主要病险因素是大坝渗流安全、泄洪能力复核、大坝结构安全、泄水建筑物结构安全、大坝坝顶高程和防浪墙高程复核、闸门结构安全、启闭机结构安全等。研究结果可为新时期中小型水库土石坝工程除险加固提供参考和指导。
There are a large number of medium and small-sized reservoirs in China,most of which are earth and rockfll dams.However,there is insufficient study on the risk law of earth and rockfill dam engineering in medium and small-sized reservoirs.By constructing a hierarchical structure model for safety evaluation of medium and small-sized reservoir earth and rockfill dams,based on the comprehensive weight analysis of dam safety risk and risk frequency,using the analytic hierarchy process to calculate weights and drawing the Pareto chart,the main risk indicators and factors of earth and rockfill dam engineering in medium and small-sized reservoirs are obtained by quantitative analysis.This study shows that the risk characteristics of earth and rockfill dam engineering in medium and small-sized reservoirs are balanced,comprehensive and regular.The main risk indexes of reservoirs are seepage safety,structural safety and insufficient flood control capacity.The main risk factors of reservoirs are dam seepage safety,flood discharge capacity re-view,dam structure safety,drainage structure safety,review of dam crest elevation and wave wall elevation,gate structure safety and hoist structure safety.The study results can provide reference and guidance for the reinforcement of small and medium-sized reservoir earth and rockfill dams in the new era.
作者
王甫
姚嘉诚
高全
贾强强
WANG Fu;YAO Jiacheng;Gao Quan;Jia Qiangqiang(Changjiang Survey Planning Design Research Co.,Ltd.)
出处
《大坝与安全》
2024年第2期6-10,共5页
Dam & Safety
基金
国家重点研发计划项目(2022YFC3005505)
国家大坝安全工程技术研究中心支撑项目(CX2021Z41)。
关键词
中小型水库
土石坝
病险特点
层次分析法
medium and small-sized reservoir
earth and rockfill dam
risk characteristics
analytic hi-erarchy process
