Quantitative principles of dynamic interaction between rock support and surrounding rock in rockburst roadways  

作　　者：Lianpeng Dai Dingjie Feng Yishan Pan Aiwen Wang Ying Ma Yonghui Xiao Jianzhuo Zhang 

机构地区：[1]Institute of Disaster Rock Mechanics,Liaoning University,Shenyang 110036,China [2]School of Environmental Sciences,Liaoning University,Shenyang 110036,China [3]CCTEG Tiandi Science&Technology Co.,Ltd.,Beijing 100013,China [4]School of Physics,Liaoning University,Shenyang 110036,China [5]School of Mechanics and Engineering,Liaoning Technical University,Fuxin 123000,China

出　　处：《International Journal of Mining Science and Technology》2025年第1期41-55,共15页矿业科学技术学报(英文版)

基　　金：funded by the National Natural Science Foundation of China (No. 52304133);the National Key R&D Program of China (No. 2022YFC3004605);the Department of Science and Technology of Liaoning Province (No. 2023-BS-083)。

摘　　要：Rockbursts, which mainly affect mining roadways, are dynamic disasters arising from the surrounding rock under high stress. Understanding the interaction between supports and the surrounding rock is necessary for effective rockburst control. In this study, the squeezing behavior of the surrounding rock is analyzed in rockburst roadways, and a mechanical model of rockbursts is established considering the dynamic support stress, thus deriving formulas and providing characteristic curves for describing the interaction between the support and surrounding rock. Design principles and parameters of supports for rockburst control are proposed. The results show that only when the geostress magnitude exceeds a critical value can it drive the formation of rockburst conditions. The main factors influencing the convergence response and rockburst occurrence around roadways are geostress, rock brittleness, uniaxial compressive strength, and roadway excavation size. Roadway support devices can play a role in controlling rockburst by suppressing the squeezing evolution of the surrounding rock towards instability points of rockburst. Further, the higher the strength and the longer the impact stroke of support devices with constant resistance, the more easily multiple balance points can be formed with the surrounding rock to control rockburst occurrence. Supports with long impact stroke allow adaptation to varying geostress levels around the roadway, aiding in rockburst control. The results offer a quantitative method for designing support systems for rockburst-prone roadways. The design criterion of supports is determined by the intersection between the convergence curve of the surrounding rock and the squeezing deformation curve of the support devices.

关 键 词：Deep roadway ROCKBURST Dynamic interaction Rock support Surrounding rock Rockburst control 

分 类 号：TD353[矿业工程—矿井建设]