摘要
Abstract
In order to study the stress distribution law of different depths in the axial direction of the roadway during the tun-neling process of the trapezoidal-section excavation roadway,FLAC3D software is used to simulate the roadway tunneling process.Based on the fractional-order theory,the fractional-order creep model is established,and the secondary construction is completed in FLAC3D software.By assigning different creep models to different rock layers,simulating the stress distribu-tion of rock layers with different lithology,analyzing the stress distribution at different locations in the axial direction of the roadway,and simulating the influential factors of the stress distribution in different conditions,it is concluded that the de-formation of the roof of the roadway is a dynamic process in space and time,and the roof and floor rock stresses in the sup-port zone,hollow roof zone,disturbed zone,and original rock zone are all in the process of dynamic evolving change,and the stability of the roof is different under different conditions.关键词
蠕变模型/综掘巷道/分数阶理论/数值模拟Key words
creep model/comprehensive tunneling roadway/fractional order theory/numerical simulation分类
矿业与冶金
