A prediction method suitable for non-uniform large deformation grade of soft rock tunnel

A prediction method and large deformation technology, applied in the field of level prediction, can solve difficult problems such as prediction of tunnel deformation unevenness, achieve unique advantages, scientific and reasonable optimization method, and good deformation control effect

Active Publication Date: 2021-04-16
SHANDONG UNIV +1
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Problems solved by technology

[0004] According to the inventor's understanding, the traditional hierarchical prediction of tunnel deformation mainly adopts empirical formulas and numerical simulation methods, but because the uneven large deformation of soft rock tunnels is affected by various factors such as engineering geological factors and construction factors, it is a nonlinear solution problem. Traditional empirical formulas and numerical simulation methods have certain limitations, and it is difficult to predict the unevenness of tunnel deformation

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  • A prediction method suitable for non-uniform large deformation grade of soft rock tunnel

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[0033] The present disclosure will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0035] It should be noted that the terminology used herein is only for describing specific embodiments, and is not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

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Abstract

The disclosure provides a method suitable for predicting uneven and large deformation levels of soft rock tunnels, which acquires the geological conditions, construction conditions and deformation data of each existing soft rock tunnel, and classifies the degree of uneven deformation into basic deformation levels and uneven deformation Level, classify and quantify the main influencing factors, and establish the initial sample database of soft rock tunnel with uneven large deformation; use different methods to calculate the subjective and objective weights of the main factors to obtain the comprehensive weight, and use the gray relational degree theory to calculate the influencing factors and soft rock tunnel respectively. The degree of correlation between the foundation deformation level and deformation unevenness level of the rock tunnel is reduced, and the influencing factors whose correlation is less than the set value are reduced; the reduced influencing factor indicators are used as input parameters, and the foundation deformation level and deformation unevenness level are output Parameters to construct the artificial neural network prediction model of soft rock tunnel with uneven large deformation; input the collected data of the soft rock tunnel to be predicted into the artificial neural network prediction model to obtain the prediction result.

Description

technical field [0001] The disclosure belongs to the field of rock and soil deformation prediction, and relates to a method for predicting uneven large deformation levels of soft rock tunnels. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Soft rock has the characteristics of low strength, large porosity, poor cementation degree, significantly affected by structure and weathering, and contains a large amount of expansive clay minerals. It will produce significant plastic deformation and rheology under the interference of engineering construction. Due to the defects in soft rock structure and strength, as well as the influence of factors such as ground stress, groundwater conditions, and construction, the surrounding rock strength and stress distribution of soft rock tunnels are different, resulting in uneven deformation, resulting in loc...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/13G06F30/20G06Q10/04G06Q50/08
CPCG06Q10/04G06Q50/08
Inventor 薛翊国马新民张馨赵素志郭创科邱道宏李国勇王鹏李鹏飞
Owner SHANDONG UNIV
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