不同侧压系数下深部巷道变形破坏数值分析
张雨豪¹，陈世江^1，2
（1. 内蒙古科技大学矿业与煤炭学院，内蒙古 包头 014010；2. 六盘水师范学院，贵州 六盘水 553004）
摘要： 随着开采深度的不断增加，巷道围岩破坏程度也逐渐增大，巷道稳定性成为相关工作人员关注的焦点。矿产
资源处于地层较深处，开采环境复杂，特别是在构造应力复杂的情况下，巷道的稳定性面临巨大挑战。对深部巷道围岩在
不同的侧压系数下，水平位移、垂直位移、最大应力分布以及塑性区的变化特征进行了研究，并运用3DEC （3 Dimension
Distinct Element Code，三维离散单元法程序） 软件进行数值模拟研究。研究结果表明：巷道两帮的水平位移会随着侧压
系数的增大逐渐变大；顶底板的垂直位移也在增大，并向两帮扩展；此系数对巷道顶底板塑性区的影响较为明显，出现
剪切形式的破坏范围呈增长趋势，两帮塑性区破坏形式主要为剪切破坏。通过3DEC 数值模拟研究，为深部巷道处于复
杂应力环境时的巷道支护提供参考。
关键词： 深部巷道；侧压系数；数值模拟；应力集中
中图分类号： TD325      文献标志码： A      文章编号： 2095-0802-(2023)03-0013-05
Numerical Analysis of Deformation and Failure of Deep Roadways under Different Lateral
Pressure Coefficients
ZHANG Yuhao¹, CHEN Shijiang^1,2
(1. College of Mining and Coal, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China;
2. Liupanshui Normal University, Liupanshui 553004, Guizhou, China)
Abstract: With the continuous increasing depth of mining, the degree of damage to roadway surrounding rock is gradually
increasing, and the stability of the roadway has been the focus of attention. As the mineral resources are in the deep strata, the
mining environment is complex. Especially in the case of complex tectonic stress, the stability of roadway faces great challenges. In
this paper, the variation characteristics of horizontal displacement, vertical displacement, maximum stress distribution and plastic
zone of deep roadway surrounding rock under different lateral pressure coefficients were studied. By using 3DEC (3 Dimension
Distinct Element Code) software, the numerical model study was performed. The results of the study show that the horizontal
displacement of both sides of the roadway will gradually increase with the increase of the lateral pressure coefficient; the vertical
displacement of the roof and floor also increases and extends to both sides; this coefficient affects the plastic zone of the roof and
floor of the roadway, which is more obvious, and there is a growing trend of damage in the form of shear, while the damage form in
the plastic zone of the two sides mainly shows shear failure. The 3DEC numerical simulation study provides a reference for the
support of deep roadways when they are in a complex stress environment.

Key words: deep roadway; lateral pressure coefficient; numerical simulation; stress concentration