一、问题的提出我国人口众多,耕地相对较少.这一特点对我国的“四化”建设,尤其是对大型水库的建设,具有相当大的制约作用.我国东南广大地区的防洪问题很严重,因此拟在这些地区兴建水库防洪时淹没问题很感棘手,就与这一特点有直接的联系.为了满足一定的防洪要求,需要有较大的库容,随之而来的是相当大的淹没损失.而且防洪库容留多 First, the issue raised China’s large population, relatively small arable land.This characteristic of our country’s “four modernizations” construction, especially for the construction of large reservoirs, has a considerable restraint.China’s vast areas of Southeast flood control is very serious Therefore, it is very troublesome to construct the reservoir flooding in flood control in these areas, which is directly related to this characteristic. In order to meet some flood control requirements, a large storage capacity is required and a considerable flooding ensues Losses and more flood control storage capacity