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临潼县零河水库容4195万立方米,有效库容为1645万立方米,自1960年建成以来,在防洪、灌溉、养鱼、旅游服务等方面都发挥了很好的作用。由于水库已淤积1250万立方米,需要进行改建,1981年重新修建的放水设备包括放水塔和输水涵洞,涵洞出口退入天然河道,跌差较大,由四级跌水组成,设计退水流量为30立方米/秒,一、二、三级均为陡坡式跌水,下接消力塘,经试水运行,发现各级跌水消能效率较低,造成各级余能逐级迭加,对未修建的第四级跌水压力很大,要求第四级跌水有较高的消能效率,
With a capacity of 41.95 million cubic meters and a usable storage capacity of 16.45 million cubic meters, Lintong County Zero River Reservoir has played a very good role in flood control, irrigation, fish culture and tourism services since it was completed in 1960. Since the reservoir has deposited 12.5 million cubic meters, it needs to be rebuilt. In 1981, the rebuilt drainage facilities including the drainage towers and water culverts, and the culverts exit into natural rivers with large drop differences, composed of four levels of falling water and designed for drainage Flow rate of 30 cubic meters / second, one, two and three are steep-type falls, the next next Hastengang, the test run, found that all levels of water energy efficiency is low, resulting in all levels of residual energy level Superposition, the fourth level did not build a large drop of water pressure, requiring the fourth level of water has a higher energy efficiency,