云南蒙自断陷盆地岩溶地下水流向研究

Study on Flow Direction of Karst Groundwater in Mengzi Fault Basin of Yunnan Province

岩溶地区地下水径流特征复杂。以云南蒙自断陷盆地为例,通过开展水文地质调查、示踪试验、综合研究等,揭示了不同水文地质单元岩溶地下水径流方向:蒙自盆地内东山—蒙自(Ⅰ-1)、大屯(Ⅰ-2),蒙自盆地东南黑龙潭(Ⅰ-3)单元内岩溶地下水整体由南东流向北西;新安所(Ⅰ-4)单元内由南向北;蒙自盆地南部8号暗河(Ⅱ-1)、9号暗河(Ⅱ-2)两个水文地质单元内岩溶地下水由北流向南,对研究西南典型岩溶区地下水径流特征、合理评价和开发地下水资源具有重要的理论意义和实际应用价值。

The characteristics of groundwater flow in karst area is complicated. This paper took the Mengzi fault basin as a case to reveal the flow directions of the karst groundwater in different hydrogeological units based on hydrogeological investigation, tracing experiment and comprehensive study. The results show that karst groundwater flow from southeast to northwest in the units of Dongshan - Mengzi （I-1）, Datun （I- 2） and Heilongtan （I-3） in the Mengzi basin, from south to north in the unit of Xin ansuo （I-4）, and from north to south in the 2 units ofNo.8 underground river （Ⅱ-1） and No.9 underground river （Ⅱ-2）.