A method for advanced prediction and forecasting of expansive surrounding rock deformation in long-distance tunnels

A technology of surrounding rock deformation and advanced prediction, which is applied in the directions of measuring devices, surveying and navigation, instruments, etc., can solve problems such as difficult to achieve surrounding rock expansion, and achieve the effect of quantitative prediction, comprehensive disclosure, and guarantee of applicability
CN111504252BActive Publication Date: 2021-07-02CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
Publication Date
2021-07-02

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Abstract

The invention discloses a method for predicting and predicting the deformation of expansive surrounding rock in a long-distance tunnel in advance, in particular to the method for discriminating expansive rock mass and predicting and predicting the deformation of expansive surrounding rock based on advanced pilot tunnels and intelligent feedback technology. During the construction period, the stratum in front of the face of the tunnel is discriminated against the expansibility and degree of expansion of the rock mass, and then the composite expansion viscoelastic-plastic model is used to conduct intelligent feedback analysis according to the actual deformation of the surrounding rock to obtain the surrounding rock that meets the site conditions. Mechanical parameters, realize the quantitative prediction of expansive surrounding rock, quantitatively predict the deformation law and magnitude of surrounding rock, and provide a basis for the design optimization and construction plan demonstration of expansive surrounding rock support.
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Description

technical field

[0001] The invention relates to the technical field of advance prediction and prediction of expansive surrounding rock deformation in long-distance tunnels, and specifically refers to a method for advanced prediction and prediction of expansive surrounding rock deformation in long-distance tunnels. Prediction, and carry out quantitative forecasting of expansive surrounding rock deformation. Background technique

[0002] For long-distance hydraulic tunnels, tunnels (roads) of highways, railways and other line projects have the characteristics of long lines and passing through various geological units, so they often face geological conditions with large buried depth, variable geological units, and complex lithology. condition. Especially when the tunnel passes through the soft rock tunnel section or fault fracture zone, it will often encounter large deformation disasters of the surrounding rock, causing engineering problems such as deformation encroachment of ...

Claims

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