煤系灰岩含水层水文地球化学特征研究  

Study on Hydrogeochemical Characteristics of Limestone Aquifer in Coal Measures

作　　者：孙林[1] 肖观红 Sun Lin;Xiao Guanhong(Anhui Provincial Coal Geological Exploration Bureau Third Teams,Suzhou 234000,Anhui,China;School of Earth Environment,Anhui University of Science and Technology,Huainan 232001,Anhui,China)

机构地区：[1]安徽省煤田地质局第三勘探队,安徽宿州234000 [2]安徽理工大学地球与环境学院,安徽淮南231001

出　　处：《绿色科技》2024年第10期246-250,255,共6页Journal of Green Science and Technology

基　　金：国家重点研发计划项目(编号:2022YFF1303302)。

摘　　要：华北型煤田水文地质条件复杂,随着开采深度增加,水害事故时有发生。为进行矿井水害防治,以淮南煤田顾北煤矿为例,通过系统分析其水文地质特征,确定太原组灰岩水为1煤开采的直接威胁水源。基于水化学类型和常规离子分析,结果表明:研究区内太灰水阳离子主要是K^(+)+Na^(+),主要阴离子为Cl^(-),且各采区及受陷落柱影响区域的水化学类型具有明显差别;另外,受地下水的补给、径流和排泄条件以及循环快慢、阳离子交换作用等因素的影响,太灰水K^(+)+Na^(+)、Cl^(-)和HCO_(3)^(-)含量随深度的增加呈现明显增大趋势,Ca^(2+)、Mg^(2+)和SO_(4)^(2-)呈减小趋势。The hydrogeological conditions of North China type coalfield are complex.With the increase of mining depth,water damage accidents occur from time to time.In order to prevent and control mine water disasters,this paper takes Gubei Coal Mine of Huainan Coalfield as an example.Through systematic analysis of its hydrogeological characteristics,it is determined that the limestone water of Taiyuan Formation is the direct threat water source for coal mining.Based on the hydrochemical type and conventional ion analysis,the conclusion shows that the cations of Taihui water in the study area are mainly K^(+)+Na^(+),and the main anions are Cl^(-),and the hydrochemical types of each mining area and the area affected by the collapse column are obviously different.In addition,the contents of K^(+)+Na^(+),Cl^(-)and HCO_(3)^(-)increased significantly with the increase of depth,and the contents of Ca^(2+),Mg^(2+)and SO_(4)^(2-) decreased due to the influence of groundwater recharge,runoff and discharge conditions,circulation speed and cation exchange.

关 键 词：淮南煤田 煤系灰岩含水层 水文地球化学特征 

分 类 号：P619[天文地球—矿床学]