The optimization model of the foundation pit retaining programmes based on AHP and fuzzy mathematics

With regards to the best type selection of foundation pit, this paper provides scientific theoretical basis to find the optimization in terms of the analysis and comparison based on the mathematical model. The mathematical model established in this paper observes the construction of several support schemes in a certain place. It determines the optimal support scheme by the comparison of A values, which is calculated by the analysis and comparison of the model. With the application of the AHP theory, the comprehensive evaluation model of the optimal selection is established according to fuzzy comprehensive evaluation in fuzzy mathematics. This method reduces the problem of ambiguity and complexity. At the same time, it settles the problem in balance of an accuracy and simplicity.