无资料河沟年径流量计算方法研究

Study on Annual Runoff Calculation Method for the Rivulet Without Data Record

以新疆哈密地区为例,根据已建水文站资料,分析了河流8月径流量与年径流量间的关系及8月径流量占全年径流量的比例,建立了有资料的各水文站8月径流量与年径流量间的相关关系,然后选择合适的参证站,移用参证站8月径流量与年径流量间的相关关系,推算了无资料河流的年径流量。结果表明:①利用测流推算法计算出的年径流量与实际情况基本相符,说明该方法具有一定的可信度;②用测流推算法计算无资料河沟年径流量时,参证站的选取很重要;③所研究的测流推算法对于以冰川融水、基岩裂隙水为主要补给源并且无人工干扰的河沟更为合理。

Taking the Hami area as an example and according to the hydrological data measured by hydrological stations already built, this paper analyzed the relationship between runoff in August and annual runoff and the ratio of the August runoff accounting for the annual runoff. The corre- lations between the annual runoff and the August runoff are established with the measured data at each hydrological station. Selecting the suitable reference station and according the correlation between annum runoff and August runoff of the reference station, this paper calculated the annual runoff of the river without data. The results show that： 1 ） using the method of measuring flow deduce to calculate annual runoff is basically consist- ent with the actual situation, which indicates that the method has certain reliability; 2） how to select the reference station is important when using the method of measuring flow deduce to calculate annual runoff of the river without data; 3） it is more reasonable that using the method of measuring flow deduce to calculate the river runoff of which mainly supply with glacial melt water and bedrock fissure water and non-artificial interfered rivulets.