Design Flood Calculating And Studying In Lianjiang Watershed

Water conservancy is the foundation of national economy and socil development. With the rapid development of national economy, there are great changes in socil economy, ecological environment and natural landscape,and more people are concerned about the question of water resource.The scientific planning to river watershed is the key to realize scientific management, disposition, exploiture, utilize and protection of water resource and important act to propel sustainable development of national economy.This text is based on the reasonable determination of design flood frequence and design flood water surface profile calculation of Lianjiang main stream in Qingyuan city, adopts different methods for analysis, constitute calculating model, optimize model parameter, improve the application software in Windows 98 that can take out hydrology frequency, reservoir's natural river flood water surface profile calculating. In this way, there is appreciable improvement in work efficiency, through conversion analysis research on series of water level and flow rate in Lianjiang main stream . it fille up plenty of hydrology information!, offer more comprehensive hydology materials in flood forecast, hydrology analysis calculation, and priject condtrunction .It is significant in production practice, According to improve calculating method of flood water surface profile, bring up calculating accuracy, offers scitific reference on deciding design flood . Object matter of this text as follows:First chapter expoud the purpose and function of this topic and introduce theory development's present status of flood frequency calculating.Second chapter introduce research domain of this text: Lianjiang watershed'sbasic status, conversion analysis about important controlsection of Lianjiang main stream, and reasonable check.Third chapter comprehensive introduction about foudamental principle,character, method development and application of floodfrequency calculating theory. Forth chapter comparative analysis design flood's frequency calculatingand outcome in Lianjiang watershed. Fifth chapter calculat design flood water surface profile in Lianjiangwatershed. Sixth chapter summarize complete text...