浅析贵州山区非闭合流域入库径流计算方法

Analysis on Calculation Method of Inflow Runoff of Non-closed Watershed in Guizhou Mountainous Area

岩溶地区通常发育有大量岩溶裂隙、管道和洞穴,构成错综复杂的地下输水网络,形成了独特的流域水循环模式。地下岩溶构造的存在会造成地下分水岭与地表分水岭的不重合,流域趋于非闭合状态。文章在分析岩溶区域特征的基础上,根据水量平衡原理,计算流域之间的交换水量,并结合非闭合流域的特征,分析得出实际入库径流量,可供类似水利工程设计参考。

There are a large number of karst fissures,pipelines and caves in karst areas,which constitute a complex underground water supply network and form a unique basin water cycle model.The existence of underground karst structure will result in the non coincidence of underground watershed and surface watershed,and the watershed tends to be non closed.Based on the analysis of the characteristics of karst area and the principle of water balance,the paper calculates the exchange water△p between basins,and analyzes the actual inflow runoff according to the characteristics of non closed drainage basin,which can be used as a reference for similar hydraulic engineering design.