巷道快速掘进中循环步距对顶板稳定性影响分析
章俊¹，付玉平²
（1. 山西中阳荣欣焦化有限公司，山西 中阳 033401；2. 太原科技大学安全与应急管理工程学院，山西 太原 030024）
摘要： 为研究巷道在快速掘进中循环步距对顶板岩层的影响规律，以山西中阳荣欣焦化有限公司高家庄煤矿9 号煤
层工作面回风巷为研究对象，利用FLAC^3D有限差分软件对该巷道在快速掘进中不同循环步距条件下的顶板应力分布特征
及下沉量进行了模拟分析。研究结果表明：在巷道快速掘进时，增大循环步距对顶板内应力分布的影响较小，可忽略不
计；而顶板下沉量则随循环步距的增加而变大；同时发现在空顶区内，顶板下沉量最大值将出现在掘进头后方1 m的位
置。该研究成果对巷道快速掘进中循环步距的选取具有一定的参考价值。
关键词： 循环步距；顶板稳定性；数值模拟
中图分类号： TD263      文献标志码： A      文章编号： 2095-0802-(2023)01-0034-04
Influence of Cyclic Step Distance on Roof Stability in Rapid Roadway Tunneling
ZHANG Jun¹, FU Yuping²
(1. Zhongyang Rongxin Coking Co., Ltd. of Shanxi, Zhongyang 033401, Shanxi, China; 2. School of Engineering for Safety and
Emergency Management, Taiyuan University of Science and Technology, Taiyuan 030024, Shanxi, China)
Abstract: In order to study the influence law of the cyclic step distance on the roof strata in the rapid excavation of the roadway,
this paper took the return air roadway of No.9 coal seam of Gaojiazhuang Coal Mine, Zhongyang Rongxin Coking Co., Ltd. of
Shanxi as the research object, and used FLAC^3D finite difference software to simulate and analyze the roof stress distribution
characteristics and subsidence of the roadway under different cyclic step distances in the rapid excavation. The results show that
increasing the cyclic step distance during the rapid excavation of the roadway has little effect on the stress distribution in the roof
and can be ignored; the roof subsidence increases with the increase of the cyclic step distance; at the same time, it is found that
in the empty roof area, the maximum value of roof subsidence will appear at 1 m behind the heading head. The research results
have certain reference value for the selection of cyclic step distance in rapid roadway excavation.

Key words: cyclic step distance; roof stability; numerical simulation