Research On Zhuoyu Reservoir Scheme Comparison Based On The Fuzzy Decision Theory

Zhuoyu reservoir is located in the zhanang county on the middle reaches of Yarlungzangbo river, which is a famous drought area in the Tibet shannan area, and where thewater infrastructure is extremely backward. Considering that Zhatanggou basin is thefamous food production areas in zhanang county and it is necessary to constructcontrolling hydro-junction of project in the basin, so I put forward the construction ofthe Zhuoyu reservoir in the basin irrigation district as the scheme of the waterconservancy project.The total capacity of Zhuoyu reservoir is1036.90×104m3, the designed criteria offlood is one time in50years, flood return period of the check standard is1000years.The main function of the reservoir is irrigation, the irrigation assurance rate is75%,the controlled irrigation area is40212mu, the largest reservoir flow is2.36m3/s.According to the geological terrain factors such as initial proposed three damsitesof zhuoyu in reservoir dam site, this research adopts the conventional technical andeconomic methods in general use water conservancy design institute of technical andeconomic comparison of the three dam site schemes, which schemes are feasible andeconomic and reasonable technologies. Static economic evaluation method of dam siteplan in evaluation result is the most economic, the dam site plan on dynamic economicevaluation method of the result is the most economic, the key consideration ofreservoir flood and immigration cases, using the engineering design of technicaleconomic law conclusion was the optimum dam site on the scheme.On the basis of technical and economic comparison, this paper researches fullystudy fuzzy decision theory and method of application, an in-good understanding andanalysis of domestic and foreign relevant decision making theory and method ofreservoir engineering research progress, aiming at qualitative targets in Zhuoyureservoir engineering decisions can’t quantitative analysis of the practical engineeringproblems, combined with relevant standards and guidelines and policies, in theliterature research, engineering survey, expert consultation and on the basis oftheoretical analysis, the multi-objective structural fuzzy decision analysis method,established the Zhuoyu reservoir engineering plan than the selected mathematicalmodel of fuzzy decision, and the test reliability and operability of the model.Inaccordance with requirements of the fuzzy decision theory, the importance of eachtarget of each layer system in project decision-making and the influence degree of theexpert consultation, and according to the fuzzy decision theory to consistency check ofthe results of the survey, to determine the optimal size of each target, the optimalsolution of solutions for dam site is the most superior. Comprehensive analysis of two methods carried out in this paper, the theory offuzzy decision method in Zhuoyu reservoir engineering plan is feasible. The theory offuzzy decision method is applied to quantify the qualitative objectives and make thequantitative analysis combined with those quantitative goals. It can evaluate the meritsof the scheme by means of analyzing kinds of qualitative and quantitative factors. Thehuge advantage of this method provide a new method in the scale decision-making ofwater conservancy project like Zhuoyu and other reservoirs.