摘要
延庆盆地中部第四系下伏基岩以蓟县系雾迷山组白云岩为主,为了摸清该区域岩溶水分布特征与规律,在旧县镇平原区布置了两眼基岩勘探井,钻探成果显示,蓟县雾迷山组岩溶裂隙发育、渗透性好、导水性强,影响半径小,岩溶含水层富水性良好,水化学类型为重碳酸钙镁型水,岩溶含水层的渗透系数为1.7020m/d,导水系数为506.17m2/d。综合分析认为,延庆旧县-石槽勘查区岩溶水资源具有一定的开采潜力。
The Quaternary underlying bedrock in the central part of the Yanqing Basin is dominated by the dolomites of the Wumishan Formation of Jixian System.In order to find out the distribution characteristics and laws of the karst water in this area,two bedrock exploration wells were arranged in the plain of the Jiuxian Town.The final drilling results show that there are good karst fissures,good permeability,strong water conductivity,small radius of influence and good water-rich karst aquifer in the Wumishan Formation of Jixian System.The water chemistry type is calcium carbonate and magnesium,and permeability coefficient of karst aquifer is1.7020m/d,the hydraulic conductivity is506.17m2/d.According to the comprehensive analysis,the karst water resources in the Jiuxian-Sicao exploration area of Yanqing has certain mining potential.
作者
牛升晟
李钫
NIU Shengsheng;LI Fang(Beijing Institute of Geothermal Research, Beijing 100143;Beijing Institute of Geological Engineering Design, Beijing101500)
出处
《城市地质》
2018年第4期67-70,共4页
Urban Geology
基金
北京岩溶水资源勘查评价工程(京发改[2011]1215号)
关键词
岩溶水
白云岩
延庆
渗透系数
Karst water
Dolomite
Yanqing
Permeability coefficient
