Abstract Rockburst is one of the leading disasters in mining and rock engineering causing serious casualties and property losses. A major engineering challenge for underground roadways in mines experiencing significant seismicity is the performance of the support system. Applicability of energy-absorbing support system was studied basing on a novel facility, and the support performance was compared with that of the ordinary rock bolt support under the same simulated geology conditions. The results demonstrate that the modelled roadway still kept in good condition after several successive impacts with increasing energy level, suggesting that the roadway retained its resistance to dynamic loads at that time. The bursting failure occurred suddenly when the dynamic loading energy reached a certain critical level. Significant differences of acceleration signals from two roadway sections with different support types appeared, indicating that the energy-absorbing support could greatly change the shock behaviour of the roadway under dynamic loading. A very significant decrease in acceleration amplitudes was produced by the good shock resistance of the roadway section supported with additional energy-absorbing elements to perfect absorbing shock energy of the roadway structure. During the bursting failure, roadway section with traditional rock bolt support was severely damaged and almost closed, while the front roadway section supported by additional energy-absorbing elements remained in relative good condition. The combination of energy-absorbing elements and rock bolt support provides a very efficient and ductile support type in extreme burst-prone conditions.

中文翻译：

---

吸能支护系统在地下巷道防岩爆中的适用性

摘要 岩爆是采矿和岩石工程中的主要灾害之一，造成严重的人员伤亡和财产损失。发生重大地震的矿井地下巷道面临的主要工程挑战是支撑系统的性能。以新型设施为基础研究了吸能支护系统的适用性，并在相同模拟地质条件下与普通锚杆支护进行了支护性能对比。结果表明，随着能量水平的增加，经过多次连续冲击后，模拟的道路仍然保持良好状态，表明当时道路保持了对动态载荷的抵抗力。当动态加载能量达到一定临界值时，突然发生爆破失效。不同支护类型的两个巷道段的加速度信号出现显着差异，表明吸能支护可以极大地改变动态荷载作用下巷道的冲击行为。车行道段抗震性好，加装吸能元件，能完美吸收车行道结构的冲击能量，使加速度幅值显着降低。在爆破破坏过程中，采用传统锚杆支护的巷道段受损严重，几乎封闭，而由附加吸能元件支撑的前巷道段保持较好的状态。