摘要
岩溶泉泉流量的衰减规律可以在一定程度上反映岩溶系统中的水文地质特征。通过观测降雨量与泉流量实时数据,利用指数函数泉流量衰减曲线进行拟合并与实地勘察的地质结构特征对比,结果发现:蝙蝠洞泉流量峰值与降雨量关系密切,强烈降雨后,通常会有较短时间的峰值滞后并且泉流量下降迅速,其泉流量衰减可分为三个指数衰减亚动态,且衰减系数的差异较大。旱季和雨季不同含水介质参与的程度不同,在雨季的强降雨中岩溶管道与较大的岩溶裂隙更多地参与到地下水的排泄当中,与实地勘查得到的地质结构特征相符。
The karst spring flow attenuation pattern can reflect hydrogeological features in karstic system a certain degree.Through observing rainfall and spring flow real time data,using exponential function spring flow attenuation curve has carried out fitting and contrasted with explored geological structure features on the spot.The result has shown that the Bianfudong spring flow peak value has close relationship with rainfall.After heavy rain,usually will have short time peak lagging and spring flow quick decreasing.The spring flow attenuation can be partitioned into three exponential attenuation sub-dynamic states with larger attenuation coefficient differences.Dry season and rainy season water-bearing media have different participation degrees.During the rainy season heavy rain,karst channel and larger karst fissures will participate into groundwater drainage more,thus agreed with explored geological structure features on the spot.
作者
茅伟绩
王锦国
Mao Weiji;Wang Jinguo(School of Earth Sciences and Engineering,Hohai University,Nanjing 211100)
出处
《中国煤炭地质》
2021年第11期47-50,共4页
Coal Geology of China
关键词
岩溶
地下水系统
流量衰减
多重介质模型
karst
groundwater system
flow attenuation
multiple media model
