摘要
为了获取北京市西集地区深部地热资源和浅部含水层间是否存在水力联系,选取研究区内的两眼地热井(西集-1井和京通-2井)进行抽水试验,并同时选取两眼地热井周边的14眼凉水井进行水位监测。试验结果表明,在对两眼地热井进行抽水试验时,周边14眼凉水井的水位未发生明显降低,暗示了深部地热水与浅部含水层并不存在水力联系。区内发育了巨厚的古近系和新近系,其岩性以泥岩和粉-细砂岩为主,是有效的隔水层,隔绝了深部地热水与浅部第四系凉水的水力联系。
In order to obtain the hydraulics links between the deep geothermal resources and shallow aquifers in Xiji area, Beijing, we chose 2 geothermal wells (Xijing-1 well and Jingtong-2 well) to carry out pumping test in the studying area, and meanwhile monitor the water levels of 14 cold water wells nearby the two geothermal wells. The test results showed that there were no obvious descends of water level in the 14 cold water wells when the two geothermal wells were conducted the pumping test, implying no obvious hydraulics links existed between the deep geothermal water and shallow groundwater. The reason might be related to be the huge thick Palaeogene and Neogene Systems in the studying area which were dominated by mudstone and silt-fine sandstone. So the Palaeogene and Neogene Systems could serve as the effective water-resisting layers and cut off the hydraulics links between the deep geothermal water and the shallow Quaternary cold water.
作者
高剑
张进平
孔祥军
冯浩
袁利娟
何云成
孙振添
沈鹏飞
GAO Jian;ZHANG Jinping;KONG Xiangjun;FENG Hao;YUAN Lijuan;HE Yuancheng;SUN Zhentian;SHEN Pengfei(Beijing Geothermal Research Institute, Beijing 100143)
出处
《城市地质》
2017年第1期56-58,64,共4页
Urban Geology
基金
基金项目:北京市东南地区地热资源开发利用调查及评价
关键词
深部地热资源
浅部含水层
抽水试验
水位监测
水力联系
Deep geothermal resource
Shallow aquifer
Pumping test
Water level monitoring
Hydraulics links
