动高压冲击下岩石破裂机理及相变研究
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摘要
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。
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.
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.
引文
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[2]郑孝军,胡志军,刘倡清,等.裂隙岩石疲劳损伤变形规律CT试验初探[J].西安科技大学学报,2005,25(4):469-473.ZHENG Xiao-jun,HU Zhi-jun,LIU Chang-qing,et al.Deformation characteristic of crack rock fatigue failure by using CT testing[J].Journal of Xi'an University of Science&Technology,2005,25(4):469-473.
[3]Stffler D.Deformation and transformation of rock-forming minerals by natural and experimental shock procession[J].Fortschr Mineral,1972,(49):50-53.
[4]单仁亮,安保全,华长清,等.石板冲击凿入的变形与破坏规律研究[J].中国矿业大学学报,2005,34(5):551-556.SHAN Ren-liang,AN Bao-quan,HUA Chang-qing,et al.Deformation and failure characteristics of rock plates under percussive penetration[J].Journal of China University of Mining&Technology,2005,34(5):551-556.
[5]张莉,龚自正,刘红,等.下地幔温度下(Mg,Fe)SiO3钙铁矿的相稳定性[J].高压物理学报,2004,8(2):170-176.ZHANG Li,GONG Zi-Zheng,LIU Hong,et al.Stability of(Mg,Fe)SiO_3-perovskite at lower mantle pressure and temperature conditions[J].Chinese Journal of High Pressure Physics,2004,8(2):170-176.
[6]蒋海昆,张流,周永胜,等.基于高温高压岩石破裂实验结果对中强地震前震中附近区域部分地震学现象的初步解释[J].西北地震学报,2002,(24):113-121.JIANG Hai-kun,ZHANG Liu,ZHOU Yong-sheng.Primary explanation on some seisimic phenomena around the epicenter area before strong and moderate earthquake based on the HT-HP rock failure experimental results[J].Northwestern Seismological Journal,2002,(24):113-121.
[7]Ming Chen,Thomas G.Sharp,Ahmed EI Goresy,et al.The majorrite+magnesiowiistite assemblage:constraints on the history of shock veins in chondrites[J].Science,1996,(271):1570-1573.
[8]葛和平,孙岩,朱文斌,等.岩石破裂行为的实验研究[J].高校地质学报,2004,10(2):290-296.GE He-ping,SUN Yan,ZHU Weng-bin,et al.Experiment on the fracture behaviour in rocks[J].Geological Journal of China Universities,2004,10(2):290-296.
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