淮南煤田太原组灰岩岩溶地下水化学场特征

The Analysis of Chemical Field Characteristic of Taiyuan Formation Limestone Karst Groundwater in Huainan Coalfield

基于淮南煤田各矿区各煤矿太原组灰岩岩溶水水质化验样统计和分析,研究了其主要离子含量、水质类型以及主要离子浓度和矿化度分布规律,提出了淮南煤田太原组灰岩地下水补给、迳流条件和构造控水特征。结果表明：淮南煤田是一个封闭~半封闭的水文地质单元,淮南矿区太原组灰岩岩溶裂隙水接受大气降水补给、径流条件较好,潘谢矿区、阜东矿区和新集矿区则总体赋存封闭较好,补给、迳流条件较差。通过此项研究,为指导淮南煤田水文地质单元划分和太原组灰岩水害防治提供了依据与途径。

The main ion content, water types, main ion concentration and salinity distribution are studied, based on the laboratory sample statistics of karst water quality of each coalfield of Taiyuan formation limestone in Huainan area. Moreover, the groundwater recharge of Taiyuan limestone in Huainan coalfield, runoff conditions and water control features of geological structure are put forward. Research shows that Huainan coalfield is a closed and semi closed hydrogeolodical unit. The Taiyuan formation limestone karst fissure water in Huainan area can receive air precipitation supply better, and has better runoff conditions too. Although the occurrence and closure are overall better in Panxie and Fudong mining area, but their recharge and runoff conditions are poorer. Through this research, it provides the basis and ways for the guidance of the division of Huainan coalfield hydrogeological units and the water hazard control of karst fissure water in Taiyuan formation limestone.