Related Experiment Video
Updated: Sep 14, 2025

Surrogate Model Development for Digital Experiments in Welding
Published on: March 28, 2025
Collaborative optimization of the Mathews stability graph method and numerical simulation for the limit exposure area
Chunlin You1, Jianhua Hu2, Jianing Li3
1Zijin School of Geology and Mining, Fuzhou University, Fuzhou, 350108, Fujian, China.
Abstract:
Significant hanging wall exposure in stopes of underground iron mines with inclined orebodies affects mine safety and efficiency. An extended Mathews stability graph method, combined with numerical simulations, was employed to evaluate stope stability. Rock mass quality was assessed using the RMR grading system and Q' values. Stability probabilities were determined by fitting stability isoprobability lines on the Mathews stability graph and analyzing exposure time, along with FLAC3D modeling to analyze the mechanical response of different exposure areas. The results showed that the expanded Mathews stability graph could determine the stability probability of various exposure areas. Increasing the stope length under the same exposure area improved stress distribution and reduced plastic destruction. Reducing exposure time enhanced stope stability. Numerical simulations suggested optimal exposure areas and structural parameters: 30 m × 15 m and 40 m × 12.5 m, with a maximum exposure time of 3 months and corresponding limit exposure areas of 450 m2 and 500 m2, respectively. These findings effectively improved the stability and safety of the stopes.
Related Concept Videos
Stress Concentrations
Multimachine Stability
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
Stress Concentrations in Circular Shafts
Method of Superposition
When applying the method of superposition, each type of load—whether...
Beams with Unsymmetric Loadings
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...

