万家寨水库蓄水后对准格尔矿区岩溶地下水的影响  

The Impounding Impact of Wanjiazhai Reservoir to Karstic Groundwater in Jungar Mining Area

作　　者：张玉贞[1] 孙占起[1] 袁仕新[1] 

机构地区：[1]中国煤炭地质总局第二水文地质队,河北邢台054066

出　　处：《中国煤田地质》2007年第A02期18-20,27,共4页Coal Geology of China

摘　　要：准格尔矿区位于蒙、晋、陕交界处,天桥岩溶水系统的西北部,区内煤炭资源丰富,为严重缺水区。在其东缘黄河内建有大(I)型水利枢纽工程万家寨水库。万家寨水库蓄水后,准格尔矿区岩溶地下水文地质条件发生了明显改变:一是岩溶地下水位的普遍升高,由黄河岸边至矿区西部升幅逐渐变小;二是岩溶地下水位与黄河水位间具有较大的高差,且近岸入渗区水力坡降变陡;三是岩溶地下水位与库水位具有同步大变幅,且同步升降;四是矿区岩溶地下水接受黄河地表水的侧向渗漏补给比例增大,侧向渗漏补给增量在1.70～13.81m3/s之间,估算矿区岩溶地下水储存资源量增加8.066×107m3,矿区岩溶水的可采资源量增加,有利于矿区岩溶水的开发和利用。The Jungar mining area is located at Inner Mongolia, Shanxi and Shaanxi bordering area, northwestern part of the Tianqiao karstic water system. The area is rich in coal resources, but seriously short of water. The Wanjiazhai reservoir on the Yellow River＇s Togtoh-Longrnen canyon sector is a large scale hydro complex. After the impounding of the reservoir, the karstie hydrogeological condition in the mining area has changed obviously： the first is general rising of karstic groundwater table, upswing range is declining from Yellow River bank toward western mining area; the second is larger drop between karstic groundwater table and river water level, and hydraulic slope is steep in near bank infiltration zone; the third is karstic groundwater table has larger synchronous fluctuation range with reservoir water level; the fourth is the mining area karstic groundwater takes in Yellow River surface water lateral percolating recharging ratio is increased, the increment is between 1.70-13.81m^3/s, estimated increment of mining area karstic groundwater resources has 8.066×107m^3, exploitable water resources increasing accordingly, thus in favor of mining area karstic groundwater exploitation and utilization.

关 键 词：水文地质条件 岩溶地下水 渗漏补给 准格尔矿区 万家寨水库 

分 类 号：P641.134[天文地球—地质矿产勘探]