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西藏易贡巨型滑坡堵塞易贡藏布江形成天然湖泊 ,对下游人民生命财产构成严重威胁。长江委水文科技抢险队奔赴灾区 ,利用声学多普勒流速剖面仪 (ADCP)对迅速上涨的入湖流量、湖泊面积、容积进行了有效的监测 ,得到了精确的数据。采用ADCP法实测易贡湖入湖流量为 518m3 s ,并应用水量平衡法对实测流量进行合理性分析 ,认为ADCP法施测流量基本合理可靠。计算得到相应于坝前水位 54m的湖泊面积为 4 4 .4km2 ,容积10 .65亿m3,平均湖宽 2 0 65m ,平均水深 2 4 .0m ,为抢险救灾总指挥部提供了可靠的决策依据。
A huge landslide in Yigong, Tibet, blocked the Yungang Zangbo River to form a natural lake, posing a serious threat to the life and property of the people downstream. The Yangtze River Commission hydrological technology rescue team rushed to the disaster area, the use of acoustic Doppler velocity profiler (ADCP) on the rapidly rising flow into the lake, lake area, volume was effectively monitored and accurate data was obtained. Using ADCP method to measure the flow into the lake of Yi Gong lake is 518m3 s, and the rationality of measured flow is analyzed by water balance method. It is considered that the flow rate of ADCP method is reasonable and reliable. The lake area corresponding to the 54m water level of the dam is calculated to be 44.4km2 with a volume of 1.065 billion m3 and an average lake width of 2065m with an average depth of 24.0m, which provides a reliable basis for decision-making for the general headquarters for disaster relief .