板寨地下河流域岩溶水循环分析

Analysis of Karst Water Cycle of Banzhai Subterranean Stream Catchment

通过对板寨地下河流域暴雨期间降水量和水位的实时监测,认为森林植被对喀斯特流域水循环有较大的影响,主要表现为较强的削减洪峰作用。受特殊的水文地质条件限制,森林植被对地下河水的补枯作用极为有限。通过对泉点出露部位的分析,发现绝大部分泉点出露于地下河上游拉笔腊断层西北水力坡度较小的地段,说明水文地质条件是控制岩溶泉点出露的重要原因,与森林植被的分布关系不明显。

The real-time monitoring of rainfall and water level at the catchment of Banzhai subterranean streamshows that forest vegetation has the effective action on water cycle in karst catchment.The forest has powerful effect to cut down the flood peak of subterranean stream and little function to supply groundwater to stream in dry season under the control of hydrogeological condition.The most of springs distribute in northwest of Labila fault with little hydraulic gradient.It shows that the locations of springs are controlled by the hydrogeological condition rather than the forest distribution.