采动影响下巷道围岩变形破坏特征

Deformation and failure characteristics of roadway surrounding rock under mining influence

为了确保采动影响下巷道的稳定性,利用Rhinoceros软件构建三维地质模型,采用FLAC^3D数值模拟了煤巷开挖围岩应力变化全过程,围岩应力、变形分布情况,工作面回采后垂直应力分布,不同预应力锚杆支护裂隙煤体中的传递特征以及不同支护强度时煤体破坏特征。研究可为类似地质条件巷道支护参数设计提供借鉴。

In order to ensure the stability of the roadway under the influence of mining,Rhinoceros software was used to construct a three-dimensional geological model,and FLAC^3D was used to numerically simulate the whole process of surrounding rock stress change,surrounding rock stress and deformation distribution,and vertical stress distribution after working face mining,the transmission characteristics of cracked coal mass supported by different prestressed anchors and the destruction characteristics of coal mass at different supporting strengths.The study provides a reference for the design of roadway supporting parameters under similar geological conditions.