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云南南洞地下河系统边界及性质研究
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引用本文:莫美仙,王 宇,李 峰,虞 慧.云南南洞地下河系统边界及性质研究[J].中国岩溶,2019,(2):173-185. MO Meixian,WANG Yu,LI Feng,YU Hui.Study on the boundaries and properties of the underground river system in Nandong, Yunnan Province[J].Carsologica Sinica,2019,(2):173-185.
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作者单位
莫美仙 昆明理工大学国土资源工程学院,昆明 650093/云南省地质工程勘察总公司,昆明 650051 
王 宇 云南省地质调查局,昆明 650216 
李 峰 昆明理工大学国土资源工程学院,昆明 650093 
虞 慧 云南省地质工程勘察总公司,昆明 650051 
基金项目:中国地质调查局云南重点岩溶区水文地质调查项目(12120114069101-01)
中文摘要:地下河系统具有固定补给范围和资源要素,是岩溶地下水进行独立循环的基本单元,控制了岩溶水的运移富集、水化学演化特征、资源构成以及环境地质问题。开展地下河系统研究首要任务是确定系统边界位置及其水文地质性质。以南洞地下河系统为研究对象,据野外调查、勘探、试验资料,以地球系统科学理论为指导,运用现代岩溶学、地质学及水文地质学的分析方法,确定南洞地下河系统是由1号暗河和2号暗河系统组成的,其中2号暗河还有叠置于其上的平石板和黑龙潭两个全排型暗河子系统;其含水岩层主要为三叠系个旧组(T2g)灰岩、灰质白云岩、白云质灰岩;根据边界的水文地质性质可以划分为地表分水岭边界、地下分水岭边界、隔水边界、岩溶含水层深埋滞留型边界。
中文关键词:地下河系统  水文地质边界  云南南洞
 
Study on the boundaries and properties of the underground river system in Nandong, Yunnan Province
Abstract:With a fixed source of recharge and resource elements, underground river system forms an independent unit in karst groundwater circulation, controlling karst water movement and enrichment, hydrochemical evolution, composition of water resources and environmental geological problems. In order to carry out karst groundwater system research, the primary task is to determine the location of the system boundaries and its hydrogeological properties. In this paper, taking Nandong underground river system as the research object, based on field investigation, exploration, test data, a multi-disciplinary method including modern karstology, geology and hydrogeology are applied. It is conclude that the Nandong underground river system is composed of two subsystems, namely No.1 and No.2 underground river subsystems, and the No.2 underground river system has two full-row type underground subsystems of Pingshiban and Heilongtan.The aquifer is mainly limestone, calcite dolomite and dolomitic limestone of Triassic system. According to the hydrogeological properties of the boundaries, it can be divided into surface watershed boundary, underground watershed boundary, confining boundaries, karst aquifers deep stagnant boundary and other types.
keywords:underground river system, hydrogeological boundaries,Nandong
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