采煤对海流兔流域大气降水-地表水-地下水-矿井水转化关系的影响  

Conversion of precipitation,surface water,groundwater and mine water affected by coal mining in the Hailiutu River Basin,Inner Mongolia,China

作　　者：李倩 马龙[1] 刘廷玺[1] 王硕 Li Qian;Ma Long;Liu Tingxi;Wang Shuo(College of Water Conservancy and Civil Engineering,Inner Mongolia Agricultural University,Hohhot 010018,China)

机构地区：[1]内蒙古农业大学水利与土木建筑工程学院,内蒙古呼和浩特010018

出　　处：《中国沙漠》2022年第5期146-157,共12页Journal of Desert Research

基　　金：国家重点研发计划项目(2018YFC0406401);内蒙古自治区“草原英才”工程项目。

摘　　要：煤矿开采使流域水文地质条件发生改变,研究采煤影响下流域降水-地表水-地下水-矿井水转化关系对揭示区域水循环过程意义重大。以海流兔流域为研究区,利用数理统计法、Piper三线图和氢氧同位素关系图等方法,分析采煤影响下降水-地表水-地下水-矿井水的转化关系。结果表明:在煤矿开采影响下采矿区地表水中SO_(4)^(2-)、Na^(+)、Mg^(2+)等含量增幅较大;流域降水、地表水与地下水转化关系以地表水下渗补给地下水为主,平均贡献率为56.7%;矿区及以下流域海流兔与纳林河不同水体间的转化关系仍以地表水补给地下水为主,与上游天然流域相比平均贡献率分别增至69.3%和59.4%;矿井水主要来源为上覆萨拉乌苏组地下水,补给比率为72.4%,煤矿开采使上覆含水层地下水向采空区汇流速度增大。Coal mining changes the hydrogeological conditions of the basin. It is of great significance to study the transformation relationship between precipitation,surface water,groundwater and mine water under the influence of coal mining. Taking the Hailiutu basin as the study area. The transformation relationship of precipitation surface water groundwater mine water under the influence of coal mining is analyzed by mathematical statistics,Piper trigram and hydrogen and oxygen isotope diagram. The results show that the content of SO_(4)^(2-)、Na^(+)、Mg^(2+)in surface water increases greatly under the influence of coal mining;The transformation relationship between precipitation,surface water and groundwater in natural watershed is mainly the recharge of groundwater by surface water infiltration,with an average contribution rate of 56.7%;The conversion relationship between different water in Hailiutu and Nalin basin is mainly the recharge of surface water to groundwater in the mining area and its downstream. The average contribution rate increased to 69.3% and 59.4% compared with the upstream natural watershed. The main source of mine water is groundwater of the overlying Sarausu Formation with a recharge ratio of 72.4%. Coal mining speeds up the confluence of groundwater from overlying aquifer to goaf.

关 键 词：矿井水 地下水 地表水 转化关系 

分 类 号：P641.1[天文地球—地质矿产勘探]