Method for simulating stress characteristics of bunker wall in coal charging process of underground coal bunker

• Main Authors: ZHU DEFU, JI XINGWANG, WANG ZHONGLUN, XI PEIQI, GUO YAOYUAN, HUO YUMING, SONG XUANMIN
• Format: Patent
• Language: Chinese; English
• Published: 16.04.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention belongs to the technical field of coal bunker analog simulation, and particularly relates to a method for simulating stress characteristics of a bunker wall in a coal charging process of an underground coal bunker. The method comprises the following steps: S100, establishing a coal bunker model; s200, establishing a coal briquette model; s300, calibrating material parameters, wherein the calibrated parameters comprise intrinsic parameters of materials and basic contact parameters between coal briquettes and between the coal briquettes and the surrounding rock wall of the coal bunker; and S400, determining simulated external environment and time step parameters, carrying out simulation analysis, carrying out post-processing, finally exporting stress distribution rules of the coal briquettes acting on the surrounding rock wall of the coal bunker at different coal charging moments, and achieving visualization of the stress distribution rules. By means of the method, the dangerous area can be detect