In deep underground engineering, rock burst and other dynamic disasters are prone to occur due to stress concentration and energy accumulation in surrounding rock. The control of dynamic disasters requires bolts and cables with high strength, high elongation, and high energy-absorbing capacity. Therefore, a constant resistance energy-absorbing (CREA) material is developed. In this study, the dynamic characteristics of the new material are obtained via the drop hammer tests and the Split Hopkinson Pressure Bar (SHPB) tests of the new material and two common bolt (CB) materials widely used in the field. The test results of drop hammer test and SHPB test show that the percentage elongation of CREA material is more than 2.64 and 3.22 times those of the CB material, and the total impact energy acting on CREA material is more than 18.50 and 21.84 times, respectively, indicating that the new material has high elongation and high energy-absorbing capacity. Subsequently, the CREA bolts and cables using the new material are developed, which are applied in roadways with high stress and strong dynamic disturbance. The field monitoring results show that CREA bolts and cables can effectively control the surrounding rock deformation and ensure engineering safety.

在深部地下工程中，由于围岩的应力集中和能量积累，容易发生岩爆等动力灾害。动态灾害的控制需要高强度、高延伸率和高吸能能力的螺栓和电缆。因此，开发了一种恒定电阻能量吸收（CREA）材料。在这项研究中，通过新材料和该领域广泛使用的两种普通螺栓（CB）材料的落锤试验和分裂霍普金森压力棒（SHPB）试验，获得了新材料的动态特性。落锤试验和SHPB试验结果表明，CREA材料的伸长率分别是CB材料的2.64倍和3.22倍，作用于CREA材料的总冲击功分别是18.50倍和21.84倍，分别表明该新材料具有高伸长率和高吸能能力。随后，开发了采用这种新材料的CREA螺栓和电缆，应用于高应力、强动力扰动的巷道。现场监测结果表明，CREA锚索能有效控制围岩变形，保障工程安全。