A simulation test system and method for the mechanical properties of rock mass joints based on the principle of force field equivalence.

The rock mass joint mechanical property simulation test system based on the principle of body force field equivalence solves the problems of high cost and sample preparation distortion of traditional rock mass engineering test equipment, realizes low-cost and high-efficiency rock mass mechanical parameter inversion and simulation, and supports the simulation of complex geological phenomena in large-scale rock mass engineering.

CN121540564BActive Publication Date: 2026-05-26CHINA RAILWAY FIFTH BUREAU GRP CHENGDU ENG CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA RAILWAY FIFTH BUREAU GRP CHENGDU ENG CO LTD
Filing Date
2026-01-19
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Current rock mass engineering stability assessment relies on traditional large-scale testing equipment, which has high costs, large footprint, distorted sample preparation, inability to simulate the synergistic effect of large-scale rock mass joint networks and overall instability mechanism, and long test cycles, making it difficult to achieve accurate mechanical parameter inversion.

Method used

A rock mass joint mechanical property simulation test system based on the principle of body force field equivalence is adopted. Through geomechanical similarity model, multi-dimensional sensor data acquisition, improved U-Net machine learning model and Bayesian inference inversion model, the system realizes automatic identification of rock mass joint expansion trajectory and mechanical parameter inversion. Combined with optical flow algorithm and particle image velocimetry, the system can perform efficient and accurate mechanical property simulation.

Benefits of technology

It enables low-cost and high-efficiency rock mechanics testing, can simulate large-scale rock engineering, provide high-quality mechanical parameter inversion results, quantify uncertainties, significantly reduce equipment costs and energy consumption, improve test efficiency, and support the simulation of rock deformation and failure under complex geological conditions.

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Abstract

This invention belongs to the field of sensor and machine learning technology. It proposes a simulation test system and method for the mechanical properties of rock joints based on the principle of equivalent body force field. The main components include: constructing a geomechanical similarity model based on the principle of equivalent body force field, including a base and a rock mass physical model. When the base moves relative to the interface of the rock mass physical model, the friction between the base and the bottom surface of the rock mass physical model generates uniformly distributed shear stress, which generates equivalent body force intensity inside the rock mass physical model; collecting multidimensional sensing data when the base moves relative to the interface of the rock mass physical model; automatically identifying the rock mass joint extension trajectory based on the multidimensional sensing data and using an improved U-Net machine learning model; obtaining displacement field data through an improved particle image velocimetry combined with an optical flow algorithm; using a Bayesian inference inversion model to invert the mechanical parameters of the joint surface; and evaluating the uncertainty of the inversion results using the Markov chain Monte Carlo method.
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