岩石撞击过程中的升温机理分析
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摘要
分析了岩石在撞击过程中的能量转化及其升温机理,推导出了理论升温公式。同时,采用TVS–2000MKII高精密度红外热成像系统,测量了大理岩和砂岩在撞击过程中的升温值,并给出了其升温值与岩石质量和撞击角度的关系曲线。最后,得出了岩石撞击过程中的升温的主要因素为:岩石破坏时释放热量、撞击时摩擦生热和岩石受压缩而升温等三个方面,同时通过实验进行了验证。
The energy transformation and heating-up mechanism in the course of the rock ram are analyzed,and the theoretical heating-up formula is acquired. At the same time,the heating-up of marble and sandstone in the course of rock ram are measured by the TVS–2000MKII thermal-image formation system,and then the relation curves of heating-up and quality of rock and those of heating-up and contacting angle are acquired. It is concluded that there are three major factors,that is fracturing of rock,friction and compression of rock,during the rock ram.
The energy transformation and heating-up mechanism in the course of the rock ram are analyzed,and the theoretical heating-up formula is acquired. At the same time,the heating-up of marble and sandstone in the course of rock ram are measured by the TVS–2000MKII thermal-image formation system,and then the relation curves of heating-up and quality of rock and those of heating-up and contacting angle are acquired. It is concluded that there are three major factors,that is fracturing of rock,friction and compression of rock,during the rock ram.
引文
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[3]马晓青,韩峰.高速碰撞动力学[M].北京:国防工业出版社,1998.(MaXiaoqing,HanFeng.Dynamics ofHighSpeedImpact[M].Beijing:NationalDefenseIndustryPress,1998.(inChinese))
[4]屠厚泽,高森.岩石破碎学[M].北京:地质出版社,1990.(TuHouze,GaoSen.RockCrack[M].Beijing:GeologicalPublishingHouse,1990.(inChinese))
[5]戴振东,王珉,薛群基.摩擦体系热力学引论[M].北京:国防工业出版社,2002.(DaiZhendong,WangMin,XueQunji.FrictionSystemThermodynamics[M].Beijing:NationalDefenseIndustryPress,2002.(inChinese))
[6]ArchardJ F.The temperature of rubbing surface[J].Wear,1958,2:438–439.
[7]吴立新.遥感岩石力学及其新近进展与未来发展[J].岩石力学与工程学报,2001,20(2):139–146.(WuLixin.Remote sensing rock mechanics and its recent achievements and future development[J].ChineseJournal ofRockMechanics andEngineering,2001,20(2):139–146.(inChinese))
[8]耿乃光,崔承禹,邓明德.岩石破裂实验中的遥感观测与遥感岩石力学的开端[J].地震学报,1992,14(增):645–652.(GengNaiguang,CuiChengyu,DengMingde.Rock rack experiment in the remote sensing observation and the threshold of remote sensing rock mechanics[J].ActaSeismologicaSinica,1992,14(Supp.):645– 652.(inChinese))
[9]邓明德,耿乃光,崔承禹.岩石应力状态改变引起岩石热状态改变的研究[J].中国地震,1997,13(2):179–185.(DengMingde,GengNaiguang,CuiChengyu.The study on the variation of thermal state of rocks caused by the variation of stress state of rock[J].EarthquakeResearch inChina,1997,13(2):179–185.(inChinese))
[10]WuL X,WangJ Z.Infrared radiation feature of coal and rocks under loading[J].Int.J.RockMech. andMin.Sci.,1998,35(7):969–976.
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