Large and super-large section chamber groups in coal mines are frequently affected by dynamic loads resulting from production activities such as roadway driving and blasting. The stability of the surrounding rock is poor, and it is difficult to control. In this paper, a similar simulation test was used to study the deformation and evolution laws of the surrounding rock of a triangle-shaped chamber group under different dynamic loads. The results showed that under dynamic loading, the vertical stress of the surrounding rock of the chamber group increased in an oscillatory form. The maximum stress concentration coefficient reached 4.09. The damage degree of the roof was greater than that of the two sides. The deformation of the roof was approximately 1.2 times that of the two sides. For the chamber closer to the power source, the stress oscillation amplitude of the surrounding rock was larger, and the failure was more serious. The force of the anchorage structure showed a phased increasing characteristic; additionally, the force of the anchorage structure on the adjacent side of the chambers was greater than that on the other side. This study reveals the deformation and failure evolution laws of the surrounding rock of large section chamber groups under dynamic loading.

煤矿中的大型和超大型型腔室组经常受到生产活动（例如巷道掘进和爆破）产生的动态载荷的影响。围岩的稳定性差，难以控制。本文采用相似的模拟试验研究了在不同动载荷下三角形腔室组围岩的变形和演化规律。结果表明，在动态载荷作用下，腔室组围岩的垂直应力呈振荡形式增大。最大应力集中系数达到4.09。屋顶的破坏程度大于两侧的破坏程度。屋顶的变形约为两侧变形的1.2倍。对于靠近电源的腔室，围岩的应力振荡幅度较大，破坏更为严重。锚固结构的力表现出阶段性的增加特征。另外，在腔室的相邻侧上的锚固结构的力大于另一侧上的。研究揭示了动荷载作用下大断面室群围岩的变形破坏演化规律。