北京岩溶水系统划分及特征分析  

Division and Characterization Analysis of Karst Groundwater System in Beijing

作　　者：王晓红 刘久荣[2] 辛宝东[2] 叶超[2] 沈媛媛[2] WANG Xiaohong;LIU Jiurong;XIN Baodong;YE Chao;SHEN Yuanyuan(Information Centre of Beijing Geology Prospecting &Developing Bureau, Beijing 100195;Beijing Institute of Hydrogeology and Engineering Geology, Beijing100195)

机构地区：[1]北京市地勘局信息中心,北京100195 [2]北京市水文地质工程地质大队,北京100195

出　　处：《城市地质》2016年第3期8-15,共8页Urban Geology

基　　金：基金项目:北京岩溶水资源勘查评价工程(京发改[2011]1215号)

摘　　要：岩溶水是北京市重要的战略后备水源,在城市供水方面发挥了重大作用,岩溶水系统划分对于掌握岩溶水资源、合理开发利用岩溶水是至关重要的。本文结合地质构造、地形地貌、水文地质条件,考虑含水岩组的连续性、不同级别地表水分水岭、地质构造的水文地质性质,将北京地区划分为3个一级岩溶水系统、7个二级岩溶水系统、16个三级岩溶水系统。其中隐伏型岩溶水系统无裸露的可溶岩或零星分布,天然资源少,地下水径流方向主要受开采影响,与上覆孔隙水有密切的水力联系。山前型岩溶水系统可溶岩分布于山区和平原,岩溶水天然补给资源丰富,含水层厚度大、分布广,调蓄能力强,开发利用程度高,排泄区有明显的阻水边界,储水能力强。山区型岩溶水系统可溶岩分布于山区,地下水向河谷、低洼处径流,排泄速度快,储存能力差,开采井零星分布,开发利用程度低。Karst groundwater is an important strategic water reserve for Beijing and has played a great role in the water supply of the city. It is essential to divide karst groundwater systems for the management of the water resource,as well as for the rational development and utilization of karst groundwater. The present article, with regard to the geological structure and the topographical and hydrogeological conditions, explains the division of the Beijing karst groundwater into 3 primary systems, 7 secondary subsystems and 16 thirdly subsystems, according to the continuity of aquifers, the hydrogeological properties of different levels of surface water, and the geological structure. Amongst these systems, the hidden karst groundwater system is not exposed soluble or scattered rocks, and has less natural resources, with groundwater flow direction due to the impact of mining, and has a close contact with overlying pore groundwater. Soluble rocks of piedmont karst groundwater system are distributed in the mountains and plains,with rich recharge resources, large aquifer thickness and wide distribution, strong regulation and storage capacity,high development level, significant water blocking discharge zone boundary. Soluble rocks of mountainous karst groundwater system are distributed in the mountains with groundwater runoff to the river valley and low-lying area,high discharge speed, poor storage capacity, production wells scattered and low development level.

关 键 词：岩溶水 系统划分 划分原则 划分方法 系统边界 

分 类 号：P641.134[天文地球—地质矿产勘探]