摘要
用ＳＨＰＢ高速冲击试验机，对４种不同裂隙类型的矿岩进行高速冲击试验，测定矿岩在高速冲击作用下应力波形、应变历史、应变率历史、应力历史、应力—应变曲线、应力—应变—应变率的关系、应力—应变—裂隙类型的关系，算出动态破坏强度和动态弹模．定量进行动静态矿岩力学特性比较，得出裂隙矿岩与完整矿岩在不同力学状态下的数值关系．
Using high speed impacting SHPB apparatus, test rock and ore of four crack types. Under the high speed impect, measure and produce the following: the curves of stress wave, the curves of strain vs time, stress vs time, stress vs strain, stress vs strain vs strain rate and stress vs strain vs the crack type. Compute the dynamic fracture strength and elastic modulus. Compare the dynamic fracture strength and elastic modulus. Compare the mechanical properties of the crack rock and ore in static and dynamic state. Obtain numerical relationship of crack and no crack rock and ore in different mechanical state.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
1994年第2期101-105,共5页
Journal of University of Science and Technology Beijing
基金
冶金工业部资助
关键词
应力
应变
破坏强度
岩石力学
stress
strain
strain rate
crack dynamic fracture strength
