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雅砻江具高流速、高流量、高变幅的特点.单漂流送、枯水期、滩、漩、沱、湾大量拦阻木材,直至洪水期木材才能顺江而下,但因交通困难,自然障碍多,不能及时赶造仍约有20%的木材被阻留.里庄水运属雅砻江中下游,自然存材量最高的一年可达10多万件,致使木材存积,腐烂变质.1976年赶漂扫尾,因存材太多,效果甚小,同时,下游收漂工程系洪水收漂,如何使木材在洪水期,木材集中涌下,损坏收漂工程,这些组流送组织提出要求.
Yalong River with high velocity, high flow, high amplitude characteristics. Single drifting, dry season, beach, swirl, Tuo, Bay a large number of blocking wood, until the flood of timber can go down the river, but due to traffic difficulties, natural obstacles More than 20% of the timber can not be kept in time and the water is in the middle and lower reaches of the Yalong River, with the highest amount of natural materials up to more than 100,000 in a year, causing wood to accumulate and decay. In the year, the fleeing and trailing ends of the year, due to too much material, the effect is very small. At the same time, the flood and drift in the downstream engineering department are getting flooded and drifting. How to make the timber fall in the flood season and damage the flooding project? .