Gushing operation condition soft sensing modeling method based on hybrid multiple models in shield tunneling process

Abstract

The invention discloses a gushing operation condition soft sensing modeling method based on hybrid multiple models in a shield tunneling process. Hybrid multiple models include the following four models: 1, a data-driven exploration information and construction data-based soil texture soft sensing model established by using a belief rule base method; 2, a data-driven seepage flow soft sensing model established by using a support vector machine method; 3, a data-driven permeability coefficient model established by using the support vector machine method; and 4, a gushing operation condition soft sensing model established by using a simplification mechanism. The soil texture soft sensing model, the seepage flow soft sensing model and the permeability coefficient model are input of the gushing operation condition soft sensing model. The modeling method disclosed by the invention has the advantages that a hybrid modeling method combining mechanism modeling and data-driven modeling is adopted, and a model modeled by using the modeling method is simple and has high interpretability, high reliability and good extrapolation.

Description

technical field [0001] The invention relates to a soft-sensing modeling method for gushing working conditions in shield tunneling process based on mixed multi-models. Background technique [0002] The shield tunneling method is one of the effective construction methods for constructing urban underground tunnels, and plays an important role in the process of urban modernization in my country. In recent years, shield construction in large and medium-sized cities in my country has developed rapidly, and dozens of tunnel projects have started successively. Due to its wide application range and low cost, the earth pressure balance shield is widely used in tunneling in water-bearing soft soil, soft rock, hard rock and mixed strata. [0003] figure 1 It shows the basic technological process of shield tunneling construction. The earth pressure balance shield machine uses the frontmost cutter head to cut the soil in front. The mixture of cut soil and water enters the soil cabin t...

AI Technical Summary

Problems solved by technology

[0006] 1. The delay time of manual analysis is long, which is not conducive to the rapid response of the shield tunneling process

[0007] 2. The error of manual experience is relatively large, and the construction risk cannot be accurately judged

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