动-静组合加载诱发岩爆时岩块弹射速度的计算

来源期刊：中南大学学报(自然科学版)2006年第4期

论文作者：左宇军 李夕兵 张义平 王卫华

文章页码：815 - 819

关键词：动-静组合加载;岩爆;弹射速度;支护设计;损伤

Key words：static-dynamic coupling loading; rockburst; ejection velocity; support design; damage

摘    要：以单轴动-静组合加载实验为依据,能量平衡为原理,损伤力学为手段分析动-静组合载荷作用下岩石发生破坏时能量的转换,对岩爆能量组成以及单轴动静组合加载诱发的岩爆岩块弹射速度进行研究。研究结果表明,与只考虑静载荷作用产生的岩爆相比,按动-静组合载荷产生岩爆设计有岩爆倾向的深部地下工程岩体的支护更加符合实际。

Abstract: The energy transform and consumption and composition in rockburst were discussed on the basis of experiment on rock under static-dynamic coupling loading and according to energy conservation and damage mechanics, then the ejection velocity of rock in rockburst was determined and compared in consideration of damage based on uniaxial static-dynamic coupling loading experiment. According to analysis of examples, compared to rockburst caused only by static stress, it is more reasonable in practice to design the support system of deep underground engineering based on rockburst caused by static-dynamic coupling stress.