Dynamic Simulation Study of Reasonable Retention Width for Protective Coal Pillar
The determination of reasonable width of protective coal pillar is of great significance to the safety and stability of the working face and the surrounding facilities of the coal seam.In order to study the reasonable width of protective coal pillar,based on the Abaqus software,the program was prepared by using the Python language.First of all,a dynamic model capable of simulating the dynamic changes of coal pillars of different widths was established,then the deformation law of the roadway under the different widths of protective coal pillar was analyzed,and finally,based on MATLAB language,a finite element optimization analysis program was prepared to calculate the parameterized finite element model with the minimum deformation of the roadway and the protective coal pillar as the optimization objective,and a reasonable width of the protective coal pillar was proposed.The validity of the calculation results and the effectiveness of the method were verified by comparing the simulation results with the field monitoring data.
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