Intelligent model constructuring method for analyzing cavity wall rock stability

A technology of surrounding rock stability and construction method, which is applied to buildings, underwater structures, infrastructure engineering, etc., to achieve the effect of improving prediction ability

Inactive Publication Date: 2007-11-21
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The object of the present invention is to provide a method for constructing an intelligent model for the analysis of the stability of the surrounding rock of the cavern, which solves the various shortcomings of the intelligent model for the analysis of the stability of the surrounding rock of the cavern in the above-mentioned prior art

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  • Intelligent model constructuring method for analyzing cavity wall rock stability
  • Intelligent model constructuring method for analyzing cavity wall rock stability
  • Intelligent model constructuring method for analyzing cavity wall rock stability

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Embodiment Construction

[0054] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0055] Method of the present invention carries out according to the following steps: as shown in Figure 8:

[0056] (1) Determine the influencing factors of the target problem

[0057] Fully consider the complexity of the influence of actual engineering faults on the force and deformation of the cavern surrounding rock and supporting structures, and determine 11 variable influencing factors, including fault distance, fault thickness, section inclination, lateral pressure coefficient, surrounding rock deformation, etc. modulus, cohesion of surrounding rock, internal friction angle of surrounding rock, Poisson's ratio of surrounding rock, buried depth of cavern, span of cavern and height-span ratio of cavern.

[0058] (2) Select model structure

[0059] As shown in Figure 1, the model structure adopts the structure of "category series model" as...

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Abstract

The invented method includes the following steps: firstly, defining object problem influence factor, selecting model structure, adopting orthogonal testing design or uniform testing design method to make optimization design for influence factor, sampling range and sampling frequency, then making finite element analysis of designed value to form main sample self-group of the intelligent model, making the main sample self-group undergo the process of characterization treatment, then utilizing the value obtained after characterization treatment to construct intelligent analysis model by utilizing neural network algorithm.

Description

technical field [0001] The invention relates to a method for constructing an intelligent model for analyzing the stability of surrounding rock in a cavern, in particular to a method for constructing an intelligent model based on the numerical simulation test results of a systematic geotechnical cavern engineering numerical simulation test. Background technique [0002] The construction of various intelligent models (ANN) for the stability analysis of cavern surrounding rocks in China is inseparable from a large number of sample data. The practical application of the intelligent model is greatly limited, so the existing research on the intelligent model is mostly limited to the theoretical level, rather than the actual production, especially for the actual cavern engineering considering the influence of faults. Moreover, most of the existing analysis models for the stability of surrounding rocks in caverns require users to have a strong foundation of finite element method and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D33/00E02D29/045
Inventor 李宁常斌
Owner XIAN UNIV OF TECH
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