恒阻内锚吸能锚杆在岩爆控制中的应用研究  

Application on Internal Yielding Bolt With Constant Resistance in Rock Burst Control

作　　者：马池帅 MA Chishuai(Patent Examination Cooperation Hubei Center of the Patent Office,CNIPA,Wuhan 430205,China)

机构地区：[1]国家知识产权局专利局专利审查协作湖北中心,湖北武汉430205

出　　处：《河南科技》2022年第20期44-47,共4页Henan Science and Technology

摘　　要：针对岩爆灾害造成的隧道支护结构被破坏的特征及其对锚杆-围岩支护系统高强度、吸能让压的要求,设计出一种恒阻滑移、内锚让压吸能的锚杆。通过室内动态试验来验证新型吸能锚杆的性能,在冲击拉伸过程中,锚杆表现出良好的“自我保护”与“冲击适应性”。笔者基于开挖区岩爆倾向性指标分界线以及爆坑的深度,提出更为合理的锚杆长度的确定方法,并进一步从锚固系统的吸能角度出发,依据不同岩爆等级的能量释放来进一步优化支护参数,提出不同的支护对策,最终建立基于能量原理的不同岩爆等级控制技术体系。Aiming at the damage characteristics of tunnel supporting structure caused by rock burst disaster and its requirements for high strength, energy absorption and pressure release of bolt-surrounding rock supporting system, a kind of constant resistance slip bolt with internal anchor was designed. The performance of the new energy-absorbing bolt was verified by indoor dynamic tests. During the impact tensile process, the bolt showed good ’ self-protection ’ and ’ impact adaptability ’. Based on the dividing line of rock burst tendency index and the depth of the crater in the excavation area, the author puts forward a more reasonable method to determine the length of the anchor rod, and further optimizes the support parameters according to the energy release of different rock burst levels from the perspective of energy absorption of the anchoring system, and puts forward different support countermeasures. Finally,the control technology system of different rock burst levels based on energy principle is established.

关 键 词：岩爆 能量 让压锚杆 

分 类 号：TD324[矿业工程—矿井建设] TD353.6