| 岩石在动载作用下的破坏与强度 |
| |
| 引用本文： | 陈庆寿,吴煌荣.岩石在动载作用下的破坏与强度[J].地球科学,1987(2). |
| |
| 作者姓名： | 陈庆寿 吴煌荣 |
| |
| 作者单位： | 武汉地质学院，美国密苏里大学 美国密苏里大学(罗拉)岩石力学与爆破研究中心高级研究员 博士 |
| |
| 摘 要： | 研究岩石的动载性能,在凿岩爆破上有重要意义。分段式霍布金生杆已应用于研究岩石对波动载荷的效应。作者使用改型的霍布金生杆法对岩石试件在动载下的破坏强度作了试验研究。冲击试验台配合微处理机作高速数据显示与处理,借助应力波在弹性杆中的一维理论对数据进行解释。测定了多种岩石静载与动载的强度,并对岩石试件尺寸及加载速率的影响也作了试验。
|
| 关 键 词： | 分段式霍布金生杆 静载强度 动载强度 动载荷 |
STRENGTH AND FRACTURES OF ROCKS UNDER DYNAMIC LOADING |
| |
| Chen Qingshou.STRENGTH AND FRACTURES OF ROCKS UNDER DYNAMIC LOADING[J].Earth Science-Journal of China University of Geosciences,1987(2). |
| |
| Authors: | Chen Qingshou |
| |
| Abstract: | The study of dynamic behavior of rock has important
applications in drilling and blasting. Split Hopkingson bars hava been employed to study rock response due to stress wave loading. A modified Hopkingson bar method was applied for measuring fracture strength of unconfined cylindrical rock specimens under dynamic loadings. A wide spectrum of soft hard rocks has been tested under quasi-static and dynamic compression. A ballistic test stand incorporated with an Apple He microcomputer was employed for high speed data acquisition and analysis. The data are interpreted in terms of the elementary one-dimensional theory of wave propagation in an elastic rod. The static and dynamic strengths of rocks are determined.
The effects of loading rate and size of prock samle are also included in the study. |
| |
| Keywords: | split Hopkingson bar static strength dynamic strength dynamic loading |
| 本文献已被 CNKI 等数据库收录！ |
