河川基流分割法在山丘区地下水资源量评价中的运用

山丘区河川基流分割方法很多，采用不同方法的分割成果不尽相同。在地下水资源评价中，根据云南省自然地理独特，气候复杂多样，降水量丰沛，洪水频繁，河川径流过程线普遍呈连续多峰型的特性，寻求一种既能满足水资源综合规划要求，又符合云南实际分割河川基流量的方法，是地下水资源评价中的重要内容。采用适宜水均衡法和直线斜割法的径流资料分割河川基流量，求出两种方法之间的换算系数，修正水均衡法的分割成果，一是达到了以直线斜割法统一分割河川基流量的目的；二是提高了山丘区地下水资源量评价的精度，为探索山丘区地下水资源量及时空分布规律提供技术支撑。

Application of River Base Flow Separation in the Evaluation of Groundwater Resources in Mountainous Areas

There are many methods to separate the river base flow in mountainous areas. But, different methods come out different results. In the evaluation of groundwater resources in Yunnan Province, to seek a kind of division method, which can suit the requirement of water resources comprehensive planning as well as the actual condition of base flow in Yunnan Province, is one of the most important contents. Water balance and beeline methods are used to separate the river base flow. The conversion coefficient between the results of the two methods is calculated to modify the result of water balance method, and to meet the objective of river base flow separation by the beeline method with high precision. Thus, the research provides technique support for exploration of the groundwater resources and temporal and spatial rules in mountainous areas.