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Quick feedback analyzing system in tunnel constructing process

A technology of tunnel construction and analysis method, applied in the field of analysis system, can solve the problems of blindness of tunnel construction analysis and time-consuming numerical calculation, and achieve the effect of overcoming the slow calculation speed of the model and the lack of modeling information

Inactive Publication Date: 2013-05-08
DALIAN MARITIME UNIVERSITY
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Problems solved by technology

[0005] In order to solve the problems of artificial blindness and time-consuming numerical calculation in the tunnel construction analysis, the present invention develops a fast feedback analysis system for the tunnel construction process

Method used

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  • Quick feedback analyzing system in tunnel constructing process
  • Quick feedback analyzing system in tunnel constructing process
  • Quick feedback analyzing system in tunnel constructing process

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Embodiment Construction

[0046] Combined below as Figure 1 to Figure 4 The present invention is described in detail:

[0047] a. Preliminary acquisition of geological parameters and tunnel construction parameters, according to the previous geological exploration information and rock classification, pre-estimate the range of geological and physical mechanical parameters of the tunnel to be built by looking up the table, and understand the currently adopted design and construction parameters. Such as figure 1 Steps A01 and A02 in the tunnel construction rapid feedback analysis system flow.

[0048] b. Establish a three-dimensional numerical model. According to the current construction parameters learned in step a, a three-dimensional finite element grid numerical calculation model for tunnel excavation is established on the computer. The numerical model is input by rock mechanics parameters: including the lateral pressure coefficient of surrounding rock, variable mode , Poisson's ratio, coefficient o...

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Abstract

The invention discloses a quick feedback analyzing system in a tunnel constructing process. The system adopts a scheme: understanding currently adopted designing construction parameters; establishing a tunnel excavation three-dimensional finite element numerical grid calculation model; acquiring surrounding rock layering and convergent displacement monitoring information after a tunnel is excavated; establishing a non-linear support vector machine model; fixing an anchoring parameter according to the actual construction parameter, and optimally identifying rock mechanic parameters by adoptinga differential optimization algorithm; optimizing the construction parameter of an anchoring scheme by adopting a differential evolution algorithm; and optimizing the rock mechanic parameters by calling the differential evolution and optimization algorithms to further solve the construction parameter of the anchoring scheme, and outputting the construction parameter of the optimized anchoring scheme as a construction scheme through a computer display screen to guide the constructors to construct. The quick feedback analyzing system ensures that the monitoring information is used for optimizing the anchoring parameter while being used for identifying the surrounding rock parameters, so that the dynamic information construction is improved to a level of quantitative analysis.

Description

technical field [0001] The invention relates to a fast feedback analysis system for tunnel construction process. In particular, it involves an analysis system that combines digital camera image acquisition technology with computer intelligent analysis technology. Background technique [0002] The geological body of tunnel engineering is complex and uncertain, and the pre-design scheme is very blind. The identification of the mechanical parameters of the surrounding rock by using the on-site monitoring information, that is, the back analysis method has been studied a lot, but most of these methods do not consider the influence of the support and anchor parameters, nor can they be effectively combined with the construction adjustment. The current construction plan adjustment is often based on experience and is affected by human factors, which affects the analysis accuracy. [0003] The identification of surrounding rock parameters and the adjustment of construction schemes a...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00E21F17/18
Inventor 姜谙男宋战平刘忠会李长福
Owner DALIAN MARITIME UNIVERSITY
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