摘要
在岩溶洼地上建库筑坝,往往存在岩溶渗漏、岩溶塌陷及岩溶地基稳定等工程地质问题,但岩溶洼地具有天然的空间资源优势,利用洼地建库具有较大的开发潜力。本文从工程地质角度出发,以岩溶洼地抽蓄建库适宜性评价作为目标,选取洼地位置、地形坡度、天然库容、地形封闭条件、地层岩组、区域构造、岩溶发育程度、岩溶水动力条件、水头差、距高比,共10个指标,构建岩溶洼地建库适宜性评价指标体系,在深入分析各评价指标对洼地建库选址影响的基础上,对各评价指标进行了量化分级,采用层次分析法确定各个评价指标的权重,并建立了洼地建库适宜性评价数学模型。研究结果表明,岩溶发育程度、天然库容、岩溶水动力条件、水头差在洼地建库选址决策中起到关键性作用。本文研究成果将洼地建库选址由定性分析转化为定量评价,增强了洼地建库选址的科学性和合理性,可为多个岩溶洼地抽蓄库址的筛查提供参考和指导。
Engineering geological problems such as karst leakage,karst collapse,and karst foundation stability often occur when building reservoirs and dams in karst depression areas.However,karst depression has the advantage of natural space resources,which makes it have great potential in building dams and reservoirs.From the perspective of engineering geology,this paper aims at the suitability evaluation of pumped storage power station in karst depressions by building an assessment index system for the suitability assessment of reservoir construction in karst depressions.There are 10 indicators selected for the analysis,including karst depression location terrain slope,natural reservoir capacity,terrain enclosed conditions,lithology formation regional structure,karst development degree,karst hydrodynamic conditions,water head difference,and the ratio between length and height.Based on the in-depth analysis of the influence of each evaluation index on the site selection of reservoir construction in depressions,the quantitative classification of each evaluation index is carried out.The weight of each evaluation index is determined by using the analytic hierarchy process,and a mathematical model for evaluating the suitability of depression reservoir construction is established.This research results show that the degree of karst development,natural reservoir capacity,karst hydrodynamic conditions,and water head play a key role in the decision-making of reservoir location in depressions.The research results in this paper transform the site selection of reservoir construction in depressions from qualitative analysis to quantitative evaluation,which makes the site selection of building dams and reservoirs in karst depressions much more scientific and rationality thus providing reference and guidance for similar projects.
作者
郭果
郑克勋
余波
王松江
GUO Guo;ZHENG Kexun;YU Bo;WANG Songjiang(Gui Yang Engineering Corporation Limited of PowerChina,Guiyang 550081,China)
出处
《工程地质学报》
北大核心
2025年第4期1487-1498,共12页
Journal of Engineering Geology
关键词
岩溶洼地
建库选址
评价指标
适宜性评价
karst depression
Reservoir construction and site selection
Evaluation index
Suitability evaluation
作者简介
第一作者:郭果(1986-),男,硕士,高级工程师,主要从事工程地质方面的研究工作.E-mail:guoguo_gzu@163.com;通讯作者:郑克勋(1982-),男,硕士,教授级高级工程师,贵州省“千”层次人才,主要从事环境地质勘察及研究工作.E-mail:848545331@qq.com。
