Comparison And Selection Of Anti-seepage Schemes For Earth-rock Dam Reinforcement Based On Relative Entropy Combination Weighting

There are a large number of dangerous reservoirs in my country,and most of the dangerous earth-rock dams belonged to the "trilateral projects"(construction,survey,and design)in the 1950s and 1970s,with low flood control standards,poor engineering quality,and many hidden dangers.,A serious threat to the safety of downstream people’s lives and property,national economic development,and social harmony and stability are major public security issues that urgently need to be studied and resolved.At present,my country is spending huge sums of money to carry out the reinforcement of dangerous earth-rock dams.However,the safety of dangerous earth-rock dams is affected by various uncertain factors and existing engineering conditions.The coupling effect is complex and the technology is difficult.It is aimed at different hidden dangers and There are many treatment options for illness insurance.The research on the theoretical methods of supporting the decision-making of the dangerous earth-rock dam reinforcement plan is relatively lagging.The project mainly relies on engineering experience to make decisions,and lacks theoretical support and scientific,which may cause blind investment.In this paper,the relative entropy combination weighting method is used to compare and select the anti-seepage schemes of dangerous earth-rock dams,and provide a scientific and effective decision-making method for the comparison and selection of dangerous earth-rock dams.The main research contents and results are as follows:(1)Analysis and treatment measures for leakage of earth-rock dam.Analyze and sort out the main leakage types of earth-rock dam body leakage,dam foundation leakage,bypass leakage and contact leakage,and find out the specific causes of various types of leakage.According to different leakage types,the main anti-seepage reinforcement technical schemes are classified and summarized to provide reference for subsequent scheme comparison and selection.(2)Decision-making methods and steps for the anti-seepage plan of earth-rock dam reinforcement.In view of the imperfect problem of the existing decision-making index system,based on the theory of program decision-making,three basic principles for the establishment of the decision-making index system are proposed,and the economic factors of the program,the reliability of the reinforcement effect,the construction period index,the construction safety index,Construction and post-operation difficulty and environmental impact 6 second-level indicators and 23 third-level indicators for the decision-making index system of dangerous earth-rock dams,reinforcement and seepage prevention schemes.(3)Subjective and objective combination weighting model based on relative entropy theory.In the traditional analytic hierarchy process,when the consistency of the judgment matrix does not meet the requirements,it is necessary to repeatedly modify the judgment matrix.The compatibility matrix is used to improve the traditional analytic hierarchy process.Then according to the information entropy calculation method,the objective weight is determined,and then the relative entropy theory is used to combine the subjective and objective weights,which makes up for the shortcomings of the traditional multiplication(addition)combination method.(4)Engineering application research on decision-making of anti-seepage plan for earth-rock dam reinforcement.Relying on a dangerous earth-rock dam project to carry out engineering application research,in view of the anti-seepage problem of the water bank,five different reinforcement and anti-seepage schemes were drawn up.The traditional economic comparison and selection method and the decision-making method proposed in this article are used to compare and analyze the five different schemes and make decision-making optimization respectively,which proves the scientific rationality of the decision-making method in this article and maximizes the comprehensive effect of seepage prevention and reinforcement.The relevant results obtained in the thesis can provide decision-making methods and basis for the comparison and selection of the same type of dangerous earth-rock dams,and also provide a reference for the design of the same type of earth-rock dams,and provide ideas for the safety decision-making of reservoirs.