Statistical damage calculation method for layered rock under thermal-mechanical coupling condition

A technology of statistical damage and calculation methods for rocks, applied in calculation, computer-aided design, complex mathematical operations, etc., can solve problems such as the inability to reasonably describe the evolution process of rock damage

Pending Publication Date: 2021-12-31
DALIAN MARITIME UNIVERSITY
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Problems solved by technology

[0004] The present invention provides a statistical damage calculation method for layered rock under thermal-mechanical coupling conditions to overcome the defect that the existing statistical damage calculation method for layered rock cannot reasonably describe the evolution process of rock damage

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  • Statistical damage calculation method for layered rock under thermal-mechanical coupling condition
  • Statistical damage calculation method for layered rock under thermal-mechanical coupling condition
  • Statistical damage calculation method for layered rock under thermal-mechanical coupling condition

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Embodiment Construction

[0102] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. This embodiment provides a statistical damage calculation method for layered rocks under thermal-mechanical coupling conditions, such as Figure 1-7 , including the following steps:

[0103] S1: Define the damage parameter D (T,β) , the damage parameter D (T,β) Used to characterize the influence of temperature and bedding angle on rock mechanical...

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Abstract

The invention discloses a layered rock statistical damage calculation method under a thermal-mechanical coupling condition, and the method comprises the following steps of: firstly, giving that the strength of a rock infinitesimal body obeys a Weibull distribution function, secondly, establishing a rock stress-strain axial stress-strain relationship, and finally, according to the generalized Hooke's law and the statistical damage principle, establishing the stress-strain relationship of the rock under the triaxial high temperature-seepage coupling force test condition considering the anisotropic nonlinear strength failure criterion. The method is applied to the triaxial compression test of the layered slate under the thermal-mechanical coupling effect, the provided new model is higher in comprehensiveness and applicability compared with an existing model, and the fitting degree of a stress-strain curve obtained through the test is high. The deformation and failure characteristics of the layered slate are reflected, and the trend of the post-peak stage is fully reflected.

Description

technical field [0001] The invention relates to the technical field of rock statistical damage model calculation methods, in particular to a layered rock statistical damage calculation method under thermal-mechanical coupling conditions. Background technique [0002] With the continuous increase of construction and operation projects of underwater tunnels, the risk and probability of fires inside them are also rising. In addition to causing great harm to personnel, the fire will also lead to the deterioration of the mechanical properties and structure of the surrounding rock support system. In fact, some underwater tunnels have the characteristics of passing through layered rock mass. If a fire occurs in such an environment, it will often have a stronger impact on the deformation of the tunnel surrounding rock. In addition, there are primary or secondary structural planes such as bedding and joints in layered rock mass, and its deformation and strength characteristics have...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F17/18G06F119/08G06F119/14
CPCG06F30/20G06F17/18G06F2119/14G06F2119/08
Inventor 姜谙男蒋浩鹏刘翔刘铁新马骏
Owner DALIAN MARITIME UNIVERSITY
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