水化学特征在岩溶水系统分析中的应用——以山西晋城长河流域岩溶水系统为例

Application of Karstic Water Hydrochemical Characteristics in karst water system-A Case Study of Changhe karst water system

通过对长河流域岩溶水矿化度、Ca2+/Mg2+、Ca/Sr及Mg/Sr等的特征分析,长河流域岩溶水系统从补给区到径流区、排泄区矿化度、Ca2+/Mg2+、Ca/Sr及Mg/Sr变化具有明显的规律性,岩溶水的流动方向则与以上各水化学指标质量浓度的变化方向一致,即研究区在东、北部灰岩裸露区直接接受大气降雨补给渗漏及部分半裸露区间接补给渗漏,向西以泉水形式排泄到沁河河谷地带,形成沁河河谷排泄带,地下水径流方向为南西西方向。并分析岩溶地下水的径流特征,富水强弱,水岩作用强弱及岩溶裂隙发育规律特征。

Through to analysis on degree of mineralization, Ca/Mg, Ca/Sr and the Mg/Sr ratio＇s characteristic of the Changhe karst water system The article gets that the hydrochemical characteristic changes of Changhe karst water system have obvious regularity from recharging zone via runoff zone to discharging zone, from the supplies area to the runoff area, the degree of mineralization, Ca/Mg, Ca/Sr and Mg/Sr changes in the area of the Changhe karst water system. The karst water flow direction is consistent with above various hydroehemistry target mass concentration change direction, namely, for the research area, the eastern, northern calcareous rock exposed area, which accepts the atmospheric rainfall then directly supplies to the leakage and indirectly supplies to the leakage in the half exposed area, drains to the west by Spring water to the Qinhe river valley region, comes to forming the ter direction. excretion belt of Qinhe river valley, the ground water runoff direction for the south cubic centimeter direction.Through analysis on the hydrochemistry characteristic, may analyze runoff characteristic of the karst groundwater, the aquiferous rock function strong and weak and the karst crevasse developmental mechanism characteristic, against regulated waterways for hydrogeological conditions＇ analysis and the establishment water source and the mine has provided the geological basis.