云南丽江盆地地下水系统边界研究及系统划分

A STUDY ON THE BOUNDARY AND DIVISION OF UNDERGROUND WATER SYSTEM OF LIJIANG BASIN,YUNNAN

丽江盆地地下水循环状况对解决黑龙潭断流这一重大环境地质问题具有指导性作用。丽江盆地及周围地下水系统的划分是这一研究工作的基础。本文采用的系统边界包括流域界线、构造边界、地貌边界、阻水边界及排泄边界等。通过综合分析地表分水岭、含水层组、可溶岩与非可溶岩边界、断层性质等,确定系统边界,划分了一级至二级地下水系统,并着重分析丽江盆地系统的水循环特征。

The underground water cycle of Lijiang basin has direction signification in solving the important environment geological problem-Heilongtan broken circuit.The foundation of this study is the division of underground water system of Lijiang basin and surrounding area.In this paper,our system boundary includes drainage area boundary line,structure boundary,geomorphic boundary,water-resisting boundary and drainage boundary,etc.According to comprehensive analysis of surface water shed,water-bearing layer series,boundary of soluble rock and unsolvable rock,fault nature,etc,determination of system boundary,division of underground water system grade 1 to 2,and focus on analysis of water cycle feature of Lijiang basin system.