Study On Optimization Of High Cut Slope Support Scheme

The optimization and choice of high cut slope support scheme is involved Civil Engineering, Geotechnical Engineering, Restoration Ecology, Botany and other multi-disciplinary comprehensive problem. It not only includes structural strength, stability and deformation problems, but also involves social, economic, and environmental and ecological issues. But to a high cut slope support scheme with specific geological conditions, surrounding environment and resource limits, a practical approach on how to choose a safe, reliable, economical, environmentally friendly and low-carbon design is rare.Therefore, this paper integrates theory, model building and project survey to get comprehensive and rational exposition and analysis for optimization of high cut slope support scheme. The index system for the optimization of high cut slope support scheme is established in combination with actual conditions of DaGuang Highway in GuangDong province and the requirements of New Concept. Fuzzy Synthesize Estimate is introduced into optimization of high cut slope support scheme and Fuzzy Comprehensive Evaluation Model is established. Then, the weights of each index are calculateed with Analytical Hierarchy Process Method. The optimization of high cut slope support schemes is evaluated using the model for the right side of YK17+225-YK17+620 in the project.This paper mainly includes the following sections:First, the current high cut slope support technology development, consolidation and protection structure types and its application conditions is systematically summarized, as well as schemes optimization research status. The problems are pointed out and New Concept is put forward through the analysis of conventional excavation and support methods for high slope. And New Concept is implemented in the selection of the index system and optimization method of determining.Second, the factors for optimization and the index systems proposed by the previous are researched. The index system for the optimization of high cut slope support scheme is established in combination with actual conditions of DaGuang Highway.Third, Fuzzy Synthesize Estimate with AHP is introduced into optimization of high cut slope support scheme and Fuzzy Comprehensive Evaluation Two-level Model is established. The weight of index system is determined using AHP and the membership degree of the assessment grade is determined using expert scoring method. The method is easy to understand, easy to operate.It has some practical value.Finally, the index system and model are carried out for optimization of the YK17 +225-YK17+620 right side high cut slope support schemes in the project, and a qualitative analysis and quantitative are evaluated on the merits of the programs.The successful application of Fuzzy Synthesize Estimate Model established for the optimization of high cut slope support scheme in the project, has great significance use for reference to decision-making of the high cut slope along the project.