Method and system for calculating safety coefficient of structural surface points for rock mass stability evaluation

Through discrete element theory and Moore-Cullen constitutive model, a three-dimensional discrete element numerical model was established, stress analysis and safety coefficient calculation were carried out, and the problem that the existing technology could not determine the local stability of the rock mass was solved, and a more accurate evaluation of rock mass stability and collapse mechanism analysis was achieved.

CN120197452AActive Publication Date: 2025-06-24中铁科学研究院集团有限公司 +1
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Patent Information

Application Number
CN202510677741.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-26
Publication Date
2025-06-24
Estimated Expiration
2045-05-26

AI Technical Summary

Technical Problem

The prior art cannot effectively determine the stability of each point on the rock mass structural surface, and cannot better reflect the local stability of the rock mass and analyze the collapse-derived mechanism.

Method used

A three-dimensional discrete element numerical model based on discrete element theory is used, and a grid division model of rock mass and structural surfaces is established through the Moore-Cullen constitutive model and physical and mechanical parameters, stress analysis and safety coefficient calculation are carried out to obtain the safety coefficient of structural surface points.

Benefits of technology

Through the calculation of the safety coefficient of structural surface points, the stability of the rock mass can be more accurately evaluated, the location and derivative mechanism of collapse can be analyzed, and the safety of the project can be ensured.

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Abstract

The invention provides a structural surface point safety coefficient calculation method and system for rock mass stability evaluation, and relates to the technical field of side slope monitoring, and the method comprises the steps: obtaining first information which is a side slope three-dimensional model of at least one dangerous rock mass; performing assignment processing according to the first information, performing grid division on the rock mass and the structural surface, and establishing a three-dimensional discrete element numerical model by endowing the rock mass and the structural surface with a Mohr-Coulomb constitutive model and corresponding physical and mechanical parameters; performing stress analysis based on the three-dimensional discrete element numerical model, and simulating contact and interaction between the dangerous rock mass and the structural surface through a discrete element method to obtain stress data of each grid; and performing safety coefficient calculation according to the stress data to obtain the point safety coefficient of the structural surface. The method has the technical effects that the safety coefficient of the structural surface point is taken as an evaluation index, the stability of the dangerous rock mass is evaluated, the collapse generation position and the derivative mechanism are analyzed, and the engineering safety is ensured.
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