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岩石在动载作用下破坏模式与强度特性研究
引用本文:东兆星,单仁亮.岩石在动载作用下破坏模式与强度特性研究[J].爆破器材,2000,29(1):1-5.
作者姓名:东兆星  单仁亮
作者单位:中国矿业大学,江苏,221008
摘    要:岩石在高应变率下的破坏类型及动态强度理论是工程爆破中的一个重要的基本问题。以往研究岩石的破坏类型只停留在静载作用下,而其强度理论也多采用静态强度理论。作者利用SHPB装置对常见的四种岩石进行了大量冲击试验。结果表明,岩石在冲击载荷作用了下破坏分为四种类型:压剪破坏,拉应力破坏,拉应变破坏和卸载破坏,而且其破坏强度随冲击速度的提高而提高。最后对强度理论作了讨论。

关 键 词:岩石  高应变率  破坏模式  强度理论  SHPB装置

Research on the Failure Pattern and Strength Properties of Rock under Dynamic Loading
Dong Zhaoxing,Shan Renliang.Research on the Failure Pattern and Strength Properties of Rock under Dynamic Loading[J].Explosive Materials,2000,29(1):1-5.
Authors:Dong Zhaoxing  Shan Renliang
Abstract:The fialure patterns and dynamic strength theory of rock is an important problem in engineering blasting.The failure patterns of rock was formerly only studied on the bases of static loading and the static strength theory was adopted.A large amount of impact test was carried out on four kinds of common rock by using SHPB.Results shown that the rock failure under impact loading are classified into four patterns,i.e. compress shearing damage,tensile stress damage,extensible strain damage and unloading damage,and the rock damage strength increases with increasing impact velocity.Finally,the strength theory of rock are discussed.
Keywords:rock  high  strain  rate  failure  pattern  strength  theory  SHPB
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