摘要
在现有的竖井掘支研究中,较为缺乏对岩石-土壤相互作用与围岩稳定性关系的深入探索。基于此,文章依托奥罗拉金矿竖井工程,利用EDEM数值模拟软件,构建竖井围岩垮塌模型,以揭示围岩失稳垮塌的时空演变特征。研究结果表明,失稳区域主要在裸露围岩底部及井壁侧,且随时间变化逐步向井筒侧局部扩散;围岩运动响应与应力变化均呈现先增大后减小的趋势;颗粒破碎及运动轨迹集中在裸露围岩及井壁侧区域,受重力和周围应力释放影响,向井筒侧迁移。研究成果对竖井围岩稳定性分析、施工方案优化具有重要意义,可为类似工程提供参考和借鉴。
In the existing research on shaft tunneling and support,there is a lack of in-depth exploration of the relationship between rock-soil interaction and surrounding rock stability.Based on this,this paper relies on the Aurora Gold Mine shaft engineering,and uses EDEM numerical simulation software to build the shaft surrounding rock collapse model to reveal the temporal and spatial evolution characteristics of surrounding rock instability and collapse.The research results show that the instability area is mainly at the bottom of the exposed surrounding rock and along the shaft wall,and gradually spreads locally towards the shaft side over time;the motion response and stress change in surrounding rock show a trend of increasing first and then decreasing;the particle breakage and motion trajectory are concentrated in the exposed surrounding rock and shaft wall areas,and migrate toward the shaft side under the influence of gravity and surrounding stress release.The research results are of great significance to the stability analysis of shaft surrounding rock and the optimization of construction scheme,which can provide reference for similar engineering.
作者
陈明
李潇
田毕
郭建强
仝新利
CHEN Ming;LI Xiao;TIAN Bi;GUO Jianqiang;TONG Xinli(Hunan Lianshao Construction Engineering(Group)Co.,Ltd.,Changsha 410000,Hunan,China)
出处
《工程技术研究》
2025年第15期5-8,共4页
Engineering and Technological Research
关键词
竖井掘支
围岩垮塌
围岩稳定性
动态响应
shaft tunneling and support
surrounding rock collapse
surrounding rock stability
dynamic response
