Tunnel full-section excavation surrounding rock stress data analysis method and related equipment

A surrounding rock stress and data analysis technology, applied in the field of survey, can solve problems such as failure to fit, failure to provide stress values, etc., and achieve accurate analysis results

Active Publication Date: 2021-06-18
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI +1
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Problems solved by technology

Qualitative analysis mainly includes empirical analogy method and rock mass structure analysis method, etc. These methods qualitatively analyze the stability of surrounding rock and classify surrounding rock types based on the strength of surrounding rock itself and the combination relationship of structural planes, but cannot provide the specific stress required for design. value
Quantitative analysis mainly includes technical means such as analytical method and limit analysis method. For simple surrounding rocks, the analytical method and limit analysis method can be used to obtain ideal results through model generalization. However, when the total number of geological types of surrounding rocks is large , when the inter-combination relationship is more complex, neither of these two methods can fit well with the actual situation.

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  • Tunnel full-section excavation surrounding rock stress data analysis method and related equipment
  • Tunnel full-section excavation surrounding rock stress data analysis method and related equipment
  • Tunnel full-section excavation surrounding rock stress data analysis method and related equipment

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[0058] In order to better understand the technical solution of the present specification, the technical solution of the present specification is detailed, and the specific features of the present specification and the embodiments are to be understood by the accompanying drawings. DETAILED DESCRIPTION DESCRIPTION OF THE INVENTION In the case of the present specification, in the case of unlamating, the technical features of the present specification and the technical features in the present specification can be combined.

[0059] In this article, a relationship term such as the first and second, etc. is only used to separate an entity or operation with another entity or an operational area, and there is not necessarily or imply that there is any such entity or operation. Actual relationship or order. Moreover, the term "comprising", "comprising" or any other variable is intended to encompass non-exclusive contained, so that the process, method, article, or device including a series of

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Abstract

The invention discloses a tunnel full-section excavation surrounding rock stress data analysis method and related equipment. The method comprises: detecting the geological types of rock masses within a set range around a to-be-excavated tunnel and the vertical distance between the thickness center corresponding to each geological type and the bottom plane of the to-be-excavated tunnel; normalizing the vertical distances between all the thickness centers and the bottom plane of the tunnel to be excavated to obtain a weight coefficient; multiplying the weight value by a corresponding weight coefficient to obtain volume weight; according to the volume weight, the cohesive force and the internal friction angle, establishing an initial stress three-dimensional grid model of a rock mass within a set range around the to-be-excavated tunnel; in the initial stress three-dimensional grid model, removing initial stress three-dimensional grid data of the to-be-excavated tunnel to obtain a reserved stress three-dimensional grid model; formulating an excavation construction scheme; measuring excavation stress data of tunnel surrounding rock after actual excavation; and according to the excavation stress data, correcting the reserved stress three-dimensional grid model. And surrounding rock stress data of complex geological types and structures can be analyzed.

Description

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Application Information

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Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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