摘要
桂阳宝山矿区主要含水层壶天群及梓门桥组白云岩,与桂阳县城联成一坎,据水文地质特征,矿区至县城可划分为3个水文地质单元,在矿区西矿段距县城1.1km以上的K23孔连续抽水55天,抽取水最21.1万吨,主孔水位自322.95m降至267.45m,主孔周围有29个观测孔,控制面积4.6km^2,圈定的降落漏斗为椭圆形,面积0.5km^2。通过对各种试验数据与曲线分析说明试验区含水体主要补给源为降雨渗入,在西矿水位降至267m时,与县城之间无水力联系。
The main aquifers in Baoshan ore distriet. Guivang—Futian Gro and Zim nqiao Formation dolomites are connected together with those in Guiyang town. Based on the hydrogeological feature, three hydrogeologiocal units can be divided from the ore district to the County town, The hole K23 in the western part of the mine, more than 1.1km away from the County town, had been continuously pumped for 55 days, with a total water pumpage of 21.1 thousand ton, the water table of the main hole dropping from 322.95m to 267.45m, with 29 observation holes around the main hole, controlling a area of 4.6km^2. The cone of depression delineated takes elliptical shape, occupaying an area of 0.5km^2. The analyses of the various data and curves from the test indicate that the main recharge source of the aquiferous body in the test area is the penetration of meteoric water, no hgdraulic connection with the County town being detected while the water table in the western Baoshan mine is lowered to 267m.
出处
《湖南地质》
1990年第4期57-69,共13页
Hunan Geology
关键词
水文地质
抽水试验
金属矿床
Hydrogeology
Pumping test
Hydraulic connection
Karstification area
Underground water movement
Metal deposit
