1　前　言随着社会经济的日益发展 ,城市用水量不断增加 ,我国目前大多数城市供水现状矛盾十分突出 ,城市居民用水一直十分紧缺 ,九五末期 ,国家在国债资金中将城市供水列为重点支持项目来发展。因此 ,近二年大批城市正兴建水厂。由于供水量增大 ,相应水厂里的蓄水构筑物体积也 1 Foreword With the increasing social and economic development, the urban water consumption is increasing constantly. The current situation of water supply in most cities in China is very contradictory. The water consumption of urban residents has been very scarce. At the end of the Ninth Five-Year Plan period, the state listed urban water supply as the key support in the national debt fund. Project to develop. Therefore, a large number of cities are building water plants in the last two years. As the amount of water supply increases, the volume of water storage structures in the corresponding water works