| 爆炸冲击载荷作用下岩石的损伤实验 |
| |
| 引用本文： | 颜峰,姜福兴. 爆炸冲击载荷作用下岩石的损伤实验[J]. 爆炸与冲击, 2009, 29(3): 275-280. DOI: 10.11883/1001-1455(2009)03-0275-06 |
| |
| 作者姓名： | 颜峰 姜福兴 |
| |
| 作者单位： | 北京科技大学土木与环境工程学院,北京,100083;北京科技大学土木与环境工程学院,北京,100083 |
| |
| 摘 要： | 基于声波测试原理，利用RSM-SY5智能型声波仪，对某露天矿围岩在爆破冲击荷载作用下产生的损伤进行了现场实验研究。研究结果表明:爆破冲击荷载对距离爆源7 m范围内的岩石会造成损伤破坏，其损伤程度随着岩石与爆源距离的增大而减小；岩体声波速度随着爆破次数的不断增加而逐渐降低，多次爆破对岩石具有损伤累积效应；多次爆破的累积损伤不是单次爆破损伤的简单叠加，具有非线性特性，且距离爆源越近爆破累积损伤效应越明显。
|
| 关 键 词： | 爆炸力学 损伤 爆炸载荷 岩石 损伤度 声速 累积损伤 |
Experiment on rock damage under blasting load |
| |
| YAN Feng,JIANG Fu-xing. Experiment on rock damage under blasting load[J]. Explosion and Shock Waves, 2009, 29(3): 275-280. DOI: 10.11883/1001-1455(2009)03-0275-06 |
| |
| Authors: | YAN Feng JIANG Fu-xing |
| |
| Affiliation: | 1.Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, China |
| |
| Abstract: | Based on the sound velocity measurement theory,using RSM-SY5 intelligent sound wave apparatus,damage of the surrounding rock under blasting load in a strip iron mine was studied by in-situ tests on sound waves.It is shown that the damage range of the surrounding rock caused by blasting excavation is 7 m in this strip iron mine,and the damage degree decreases with the increase of the distance of the surrounding rock from the blasting center.The sound velocity in rock mass decreases gradually with the increas... |
| |
| Keywords: | mechanics of explosion damage blasting load rock damage degree sound velocity cumulative damage |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《爆炸与冲击》浏览原始摘要信息 |
|
点击此处可从《爆炸与冲击》下载全文 |
