A high-strength prestressed bolt support stress evaluation method and related equipment

A bolt support and prestressing technology, applied in the field of survey, can solve the problem of rock mass stability without accurate characterization method and so on

Active Publication Date: 2021-08-20
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI +1
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  • Abstract
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Problems solved by technology

[0003] However, at present, the bolting reinforcement technology for rock mass in engineering mainly relies on experience, and there is no accurate characterization method for the evaluation of rock mass stability after bolting

Method used

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  • A high-strength prestressed bolt support stress evaluation method and related equipment
  • A high-strength prestressed bolt support stress evaluation method and related equipment
  • A high-strength prestressed bolt support stress evaluation method and related equipment

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Embodiment Construction

[0048]In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification will be described in detail below through the drawings and specific examples. The detailed description of the technical solutions of the embodiments is not a limitation to the technical solutions of this specification. In the case of no conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0049] In this document, relational terms such as first and second etc. are used only to distinguish one entity or operation from another without necessarily requiring or implying any such relationship between these entities or operations. Actual relationship or sequence. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus ...

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Abstract

The application discloses a high-strength prestressed bolt support stress evaluation method and related equipment. The method includes: testing the deformation modulus of the damaged rock mass to obtain the deformation modulus of the damaged rock mass. The simulated vibration sound wave is applied to the damaged rock mass in a non-contact manner, and the simulated vibration sound wave is used to simulate the vibration sound wave generated in the application scene of the damaged rock mass; according to the damaged rock mass deformation model Quantity and bolt deformation modulus, calculate and obtain the enhancement coefficient of anchored rock mass; Based on the described enhancement coefficient of described anchored rock mass, combine the Hoek-Brown strength criterion, calculate the mechanical parameters of anchored rock mass, in order to realize the accurate evaluation of anchored rock mass The stability of rock mass after protection.

Description

technical field [0001] The present application relates to the technical field of surveying, in particular to a stress evaluation method for high-strength prestressed bolt support and related equipment. Background technique [0002] In the construction of tunnels or excavation projects, the process of blasting and excavation will inevitably cause damage to the retained rock mass, forming a blasting excavation damage area, the integrity of the rock mass in the blasting excavation damage area is reduced, and the mechanical properties are weakened , which will greatly affect the stability of the rock mass. In engineering, bolts are usually used to reinforce the damaged area of ​​rock mass. The support of bolts will generate support stress, which can enhance the stability of rock mass after bolt support. [0003] However, at present, the bolting reinforcement technology for rock mass in engineering mainly relies on experience, and there is no accurate characterization method for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/25G01N29/04G01N29/44G06F30/17G06F119/14
CPCG01L1/255G01N29/045G01N29/44G06F30/17G06F2119/14
Inventor 高军陈敏汤宇刘德安孟国基王圣王峰彭学军杨文国翁小川谢晓波李一萍林晓杨立云贾超高宇馨王伟杨文龙游国平张晓晓杨超李行利
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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