分洪溃口处流量应急监测是水文测量工作的难点。根据水量平衡原理，利用声学多普勒流速仪测流与航迹无关的特性，提出了分流法、曲断面法两种分洪溃口流量实测方法。探讨了两种方法的原理和适用范围，结合天然溃口流量监测结果，分析了其正确性和可行性。结果表明：分流法的试验结果比单断面测验结果还要理想。结合水文应急监测实际，提出了这两种方法在使用中需注意的要点。%The emergency hydrological monitoring of discharge at flood diversion breach is a difficult issue. Based on the water balance principle, two measurement methods of diversion method and curved cross-section method are proposed by considering the characteristics of Acoustic-Doppler Velocimeter ( ADV) that its flow measurement has no correlation with the track. The principle and application scope of the two methods are discussed and the correctness and feasibility are analyzed by the measured discharge data of a natural flood diversion breach. The results showed that the results of diversion method are superior to the esti-mated results obtained by single-section test of 2% error. The points to be paid attention in application of the two methods are pointed out in combination with the practice.
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