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(一)在党的“三主”治水方针指导下,水利化运动使我国广大地区的地貌迅速改观,这个改变引起水文现象中一系列的变化。如何估计这个变化是当前水利规划设计和工程管理运用中迫切需要解决的问题。由于实践上的需要,各地在解决水利化前后暴雨径流的变化方面已经积累了一些经验,通过1958年汛期各地对群众性水利观测研究工作中所获得的资料和各地基本水文站网,实验站网资料分析,更对这个变化得到一些比较具体的体会。在解决水利化前后洪水变化的问题时,必需照顾到两方面:即(1)为当前的水利运动服务,提出适用于一般中小型水利工程设计和为地方水利规划所要求
(1) Under the guidance of the party’s “three main principles”, the water conservancy movement has rapidly changed the landscape of vast areas in our country. This change has caused a series of changes in the hydrological phenomenon. How to estimate this change is an urgent problem to be solved in the current water conservancy planning and design and project management. Due to practical needs, various localities have accumulated some experience in resolving the changes of storm runoff before and after water conservancy. Through the information obtained from the mass water conservancy observational research conducted throughout the flood season in 1958 and the basic hydrological station network, experimental station network Data analysis, more on this change to get some more specific experience. To solve the problem of flood changes before and after water conservancy, we must take care of two aspects: (1) to serve the current water sports and put forward the requirements applicable to the design of general small and medium-sized water projects and to the local water conservancy planning