曹二雄1,2，李国雄1王文才1
（1内蒙古科技大学矿业研究院，内蒙古包头 014010; 2内蒙古伊东煤炭集团有限责任公司，内蒙古鄂尔多斯准格尔旗017100；）
关键词:巷道；软弱围岩；裂隙分布；围岩支护；数值模拟
中图分类号：TD353 文献标识码：A
摘要:采用UDEC程序模拟了不同地应力条件下，巷道节理发育围岩裂隙的分布特征。模拟结果显示，围岩裂隙分布范围与地应力侧压系数大小密切相关，侧压系数较小时，帮部裂隙范围较
大，侧压系数较大时，顶板裂隙范围较大。模拟了侧压系数为1.5的情况下，不同支护方案对围岩裂隙的限制作用，结果显示高预应力锚杆支护能有效控制围岩裂隙扩展，并能减小浅部裂隙
的张开程度，有效提高巷道节理发育围岩的整体稳定。
Numerical Simulation Research on Surrounding Rock Fracture and Control of Roadway Joint Development
Cao Er-xiong1,2，Li Guo-xiong1Wang Wen-cai1
(1. Mining Institute, Inner Mongolia University of Science and Technology,Baotou014010,China;
2. Inner Mongolia Yidong Coal Group Co., Ltd., Erdos Jungar Banner 017100，China)
Key words:roadway: weak surrounding rock; fracture distribution; surrounding rock support; numerical simulation
Abstract: The surrounding rockfracture distributing characteristics of roadway joint development was simulated under different underground stress environment by adopting UDEC program. The simulation result shows that the fracture distributing range is closely related with lateral pressure coefficient. The side wall’s fracture distributing range is larger when the lateral pressure coefficient is small, while the roof’s fracture distributing range is larger when the lateral pressure coefficient is large. Then the restrictions of various support projects to fracture were simulated when the lateral pressure coefficient was set as 1.5. The simulation results show that high pre-tensioned bolt support can effectively control the fracture propagation of the surrounding rock, and it can reduce the openness of the shallow fracture and improve the overall stability on surrounding rock of roadway joint development.