| With the characteristics of long construction period, great investment, complicated working procedure, complex conditions of construction and sensitivity to environmental conditions in high rockfill dam project, construction scheme design for high rockfill dam is a huge, long and complicated system engineering. How to study and select optimized construction scheme, and how to manage and control design process effectively are the key problem to ensure design quality and acquire optimal design scheme. In this paper advanced technical methods such as whole process simulation, analysis on schedule risk and investment evaluation and fuzzy comprehensive evaluation have been introduced into construction design and management of high rockfill dam to carry out theoretic analysis and application research of optimizing and management of construction scheme design for high rockfill dam. For key problems of construction scheme design for high rockfill dam,earthwork and stonework programming method,comprehensively taking diversified possible factors on construction site into consideration,has been put forward, investment of construction scheme and comprehensive optimization of construction period risk have been investigated, scheme optimization of river diversion engineering has been carried out using advanced fuzzy theory, the content and flow of design management facing the whole project life cycle has been studied and the corresponding design management system has been developed. Hoping to provide comprehensive evaluation and design management of high rockfill dam with theoretical guidance and technical support. The main work and results of this paper are as follows.1. All-coefficient fuzzy linear programming mathematical model for distribution of earthwork and stonework is established. Due to uncertainty of construction plan in distribution of earthwork and stonework in hydropower project,fuzzy restriction condition has been introduced into distribution model of earthwork and stonework and fuzzy linear programming mathematical model, comprehensively taking fuzziness of distribution of earthwork and stonework into consideration has been established to overcome disadvantages of deterministic distribution model.2. Investment-construction period risk comprehensive optimization model based on dynamic construction simulation has been first advanced. Based on construction period risk obtained by dynamic construction simulation,firstly,comprehensively taking interest rate and price rising into consideration,equilibrium point between investment and risk which meets the plan time has been find out using evaluation function method in multi-objective optimization method. Then,Comprehensive optimization mathematical model has been established and its optimization solution has been worked out.3. Fuzzy comprehensive evaluation model of construction diversion scheme based on vague set is built. Fuzzy comprehensive evaluation of construction diversion scheme has been performed based on comprehensively taking various technical condition and economic index into consideration and theory of Vague Set, which overcomes hesitate nature that fuzzy mathematics cannot represent information between positive information and negative information.4. Analyzing the content and characteristic of design management for high rockfill dam facing the whole project life cycle, the design management system has been developed. Through the application of Changheba hydropower project, the flow of design management has been illustrated. The application of design management system can improve the design level and efficiency in high rockfill project.
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