济南岩溶区大气降水入渗系数评价研究——以趵突泉泉域直接补给区为例  

Study on the evaluation of precipitation infiltration coefficient in Jinan karst area——Takeing the Baotu Spring Springs direct supply area as an example

作　　者：于令芹 刘小平 江露露 郗鸿峰 刘春伟 YU Ling-qin;LIU Xiao-ping;JIANG Lu-lu;XI Hong-feng;LIU Chun-wei(801 Institute of Hydro-geology and Engineering Geology,Shandong Provincial Bureau of Geology&Mineral Resources,Jinan 250014,China;Shandong Engineering Research Center for Environmental Protectionand Remediation on Groundwater,Jinan 250014,China)

机构地区：[1]山东省地质矿产勘查开发局八〇一水文地质工程地质大队,山东济南250014 [2]山东省地下水环境保护与修复工程技术研究中心,山东济南250014

出　　处：《地下水》2024年第5期4-8,共5页Ground water

基　　金：国家自然科学基金项目(41472216,41772257)。

摘　　要：趵突泉泉域直接补给区大气降水入渗补给是济南市区泉群的主要补给来源,从地质条件、工程地质条件、地形、重点渗漏带分布等多层次多因子评价指标体系,采用专家经验打分和加权综合评价方法得出趵突泉泉域直接补给区大气降水入渗系数。结果表明:灰岩裸露区石灰岩岩性和断裂构造、灰岩隐伏区第四系厚度、岩性、重点渗漏带分布区等是影响气降水入渗的主要因素。研究区大气降水入渗系数分为>0.5、0.5~0.4、0.4~0.3、0.3~0.2、<0.2等5个等级。基于分级结果提出直接补给区内建设密度管控、地下开挖深度的建议,为直接补给区的城市建设和泉水保护提供参考。The precipitation infiltration recharge in the direct recharge area of the Baotu Spring area is the main source of the spring group in the urban area of Jinan,from the geological conditions,engineering geological conditions,topography,key leakage zone distribution and other multi-level multi-factor evaluation index system,the infiltration coefficient of precipitation in Baotu Spring area is obtained by expert experience scoring and weighted comprehensive evaluation method.The results show that the lithology and fault structure of limestone in the exposed area,the thickness of quaternary in the hidden area,lithology and the distribution of key seepage zones are the main factors affecting the infiltration of gas precipitation.The infiltration coefficient of precipitation in the study area can be divided into 5 grades:greater than 0.5,0.5~0.4,0.4~0.3,0.3~0.2 and less than 0.2 etc.Based on the grading results,the suggestions of density control and depth of underground excavation are put forward,which can provide reference for urban construction and spring water protection in the direct suppiy area.

关 键 词：大气降水入渗系数 岩溶区 多层次分析法 直接补给区 济南市 

分 类 号：P641.133[天文地球—地质矿产勘探]