1 水利工程发展概况当今水利工程的发展呈现出几个明显的特点:①由单一目标到多目标:人类由最初追求水利工程的发电、灌溉、航运、供水、旅游等单一目标,到当前的多目标即一水多用,使该水利工程的社会、经济效益达到最大,已成为对该水利工程进行论证、决策所普遍采用的依据;②水利工程规模越来越大:水利工程 1 Overview of Water Conservancy Projects The current development of water conservancy projects presents several distinct features: ① From a single goal to a multi-goal: From the initial pursuit of water conservancy projects such as power generation, irrigation, shipping, water supply, tourism and other single goals, to the current multi The goal is to use more water to make the social and economic benefits of the water conservancy project reach the maximum, which has become the basis for justification and decision-making of the water conservancy project. (2) The scale of water conservancy projects is getting bigger and bigger: the water conservancy project