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Rock elastic-plastic damage-seepage coupling calculation method under complex disturbance condition

A technology of perturbation conditions and calculation methods, applied in complex mathematical operations, design optimization/simulation, special data processing applications, etc., and can solve problems such as reducing the overall stability of rock mass and reducing shear strength

Pending Publication Date: 2021-10-15
DALIAN MARITIME UNIVERSITY
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Problems solved by technology

Groundwater floods the slope fissures, greatly reducing its shear strength, and the resulting hydrostatic pressure and hydrodynamic pressure will also have a buoyancy effect on potential collapsed bodies, resulting in a decrease in the overall stability of the rock mass

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  • Rock elastic-plastic damage-seepage coupling calculation method under complex disturbance condition
  • Rock elastic-plastic damage-seepage coupling calculation method under complex disturbance condition
  • Rock elastic-plastic damage-seepage coupling calculation method under complex disturbance condition

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Embodiment Construction

[0097] 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.

[0098] Such as figure 1 As shown, the method of this embodiment may include the following steps:

[0099] S1. Establish a rock mass elastic-plastic coupling damage model under complex disturbances;

[0100] Specifically, as Figure 9 Shown is the rock coupling damage model diagram under disturbance;

[0101] S2. Introduce the evolution equatio...

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Abstract

The invention discloses a rock mass elastic-plastic damage-seepage coupling calculation method under a complex disturbance condition. The method comprises the following steps: S1, establishing a rock mass elastic-plastic damage coupling model under complex disturbance; S2, establishing a rock elastic-plastic damage-seepage coupling model under complex disturbance; S3, modifying the elastic-plastic damage model of the rock mass into a probability expression form obeying Weibull distribution; S4, establishing a rock elastic-plastic damage-seepage coupling model considering the time effect; and S5, performing analysis on the rock mass elastic-plastic damage-seepage coupling field considering the time effect under complex disturbance to obtain corresponding safety evaluation data. According to the method, a rock mass damage criterion under the dual effects of disturbance factors and stress redistribution is established, and the rheological characteristics of the rock mass are considered at the same time; and the rock elastic-plastic damage-seepage coupling model considering the time effect under complex disturbance is applied to stability evaluation of actual engineering, and a certain design basis is provided for safety construction of similar engineering.

Description

technical field [0001] The invention relates to the technical field of tunnel stability analysis, in particular to a rock mass elastoplastic damage-seepage coupling calculation method under complex disturbance conditions. Background technique [0002] During tunnel excavation, the surrounding rock mass will inevitably be disturbed. The blasting load during drilling and blasting construction and the freezing and thawing of rock mass in cold regions will affect the mechanical parameters of the rock mass near the face to varying degrees. At the same time, the rheological properties of rock are also one of the important factors affecting the long-term stability of geotechnical engineering. A large number of mechanical tests and on-site monitoring data show that the strength and deformation of rocks are closely related to time. In addition, rock is a heterogeneous geological material, and its physical and mechanical properties have obvious discontinuity in the spatial distribut...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06F17/11G06F119/14
CPCG06F30/23G06F17/11G06F2119/14
Inventor 姜谙男许梦飞于海李兴盛郑世杰
Owner DALIAN MARITIME UNIVERSITY
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