动高压冲击下岩石破裂机理及相变研究

用高压气体炮作为原动力，在不同的冲击应力加载条件下，加速平板飞片撞击角闪岩样品。对回收样品应用SEM、XRD及RAM谱仪进行了宏观和微观研究，确定了样品出现的破裂起始阶段应力强度以及其裂纹的扩展形态，从而对岩石样的破坏过程进行了量化研究，并阐释了裂纹形成的机理和相变的存在。实验表明，动高压冲击下岩石破裂机理及相变的研究，可为矿山开采、建筑工程等爆破及应用提供相关的理论依据。

Experiment on fracture mechanism of rocks under dynamic high-pressure

By using the high pressure gas gun as power to accelerate plane plate,and the amphibole samples,which were subjected to the plane plate impacted with different impulses,have been recovered.Then these recovered amphibole samples have been studied by some micro-mine research techniques such as SEM,XRD and RAM.In this research,the stress intensity in the beginning phase of crack appearing and the extending shape of cracks have been confirmed.Based on the analyses of micro-examination for these recovered samples,the formation principle of crack is expounded and proved there is phase transition in the amphibole.These experimental results can provide a kind of new theoretic basis for the further studying of the explosion in mine exploitation,architecture engineering,etc.