Study On Standard For Flood Water Of Cascade Reservoirs

This paper explored research thoughts and metholds of cascade reservoir's standard for flood water because of the shortcomings of Chinese standard for flood water.These new metholds were shown to be good reference vaule for confiming cascade reservoir's standard for flood water reasonably.The main research results were as follows:(l)The new thoughts of cascade reservoir's standard for flood water were brought forward,the standard at home and abord was analyzed,the disadvantage of our country's standard was pointed out on the base of comparison and evalutation,which provided the research of cascade reservoir's standard for flood water with beneficial use for referenxe.(2)the cascade reservoir's standard for flood water based on the theory of possibility-satisfiability was established as regards of not only the impacted factors' multiplicity and minstiness of cascade reservoir's standard,but also the schemes' finity and multi-object of standard for flood water.The example computation educed Ji Shi canyon water and electricity station's reasonable standard was five hundred years.(3) The concept of risk cost was imported into the confimation of standard for flood water,and the cascade reservoir's economic optimization model on the base of minimal cost by consideration of the reservoir wrecking's opportunitycost and investment cost.The result showed that the reservoirs' standard were required harmony each other and optimization as a whole.(4)The study of reservoir's standard for flood water on acceptable risk was brought forward,the dam evaluation framework of flood safety was established.The quantity problem of dam risk waule for flood water was so luted elemently under the condtion of definite reservoir's standard, which explored one kind of new research methold for flood safety of our country's reservoir's built or to be built.(5) The computation sequence of reservoir's risk rate for flood water was expored under the condition of overflowing dam accident by means of logic analysis methold and the risk decision-makibg model of reservoir's standard was also wstablished in this paper.