基于导水系数的含水层富水性评价方法  

Evaluation method of aquifer water richness based on hydraulic conductivity number

作　　者：李超峰 LI Chao-feng(China Coal Technology and Industry Xi'an Research Institute(Group)Company Limited,Shaanxi Xi'an 710077;Shaanxi Provincial Key Laboratory of Coal Mine Water Hazard Prevention and Control Technology,Xi'an 710077,Shaanxi,China)

机构地区：[1]中煤科工西安研究院(集团)有限公司,陕西西安710077 [2]陕西省煤矿水害防治技术重点实验室,陕西西安710077

出　　处：《地下水》2023年第5期15-17,共3页Ground water

基　　金：国家重点研发计划课题(2017YFC0804103)

摘　　要：富水性是含水层的本质属性之一。由于对含水层富水性的基本概念、评价方法与标准等不明确,导致应用时存在问题。本文定义了含水层富水性,给出了导水系数富水性评价方法与标准,绘制了含水层富水性分区图,并对比分析了单位涌水量和导水系数评价方法。研究认为:(1)富水性即在地下水源源不断持续补给时含水层可给出地下水量的能力。(2)采用导水系数表征含水层富水性,给出了导水系数法富水性分级标准,即导水系数T≤1 m^(2)/d、1 m^(2)/d<T≤10 m^(2)/d、10 m^(2)/d<T≤50 m^(2)/d、50 m^(2)/d<T≤100 m^(2)/d、100 m^(2)/d<T≤200 m^(2)/d、200 m^(2)/d<T≤400m^(2)/d、T>400m^(2)/d表示富水性依次为极弱、弱、中等、强、很强、特强、极强。(3)单位涌水量评价方法是一种适用于施工现场的粗略评估方法,理论依据不足。(4)导水系数富水性评价方法具有计算简单和便于现场应用的优点,理论上更科学严谨,分级更精细。在施工现场可用单位涌水量初步评估含水层富水性,在后续分析与研究阶段应采用导水系数评价方法。Water-rich is an aquifer characteristic.Because the basic concept,evaluation methods and standards of water-rich of aquifers are not clear,there are problems in application.In this paper,the water-rich of aquifers is defined,its evaluation method and hydraulic conductivity systems are given,its zoning map is drawn,and comparative analysis of methods for evaluating unit influx and hydraulic conductivity systems.According to the research:(1)Definition of water-rich is the capacity of an aquifer to provide groundwater when it can be continuously replenished.(2)Hydraulic conductivity systems is used to characterize the water-rich of an aquifer,and the classification standard is given,that is,the hydraulic conductivity systemsT≤1(m^(2)/d)、1(m^(2)/d)<T≤10(m^(2)/d)、10(m^(2)/d)<T≤50(m^(2)/d)、50(m^(2)/d)<T≤100(m^(2)/d)、100(m^(2)/d)<T≤200(m^(2)/d)、200(m^(2)/d)<T≤400(m^(2)/d)、T>400(m^(2)/d)indicate that the water-rich is very weak,weak,medium,strong,very strong,specially strong,andextremely strong,respectively.(3)The evaluation method by the specific well capacity is a rough evaluation method applicable to the construction site outside,and its theoretical basis is insufficient.(4)The evaluation method by hydraulic conductivity systems has advantages of simple calculation and convenient use,which is more scientific and rigorous in theory and more refined in classification.The evaluation method by the specific well capacity can be used at the construction site outside,and the evaluation method by hydraulic conductivity systems shall be used in the analysis and research stage inside.

关 键 词：地下水 富水性 导水系数 单位涌水量 分级标准 

分 类 号：P641.7[天文地球—地质矿产勘探]