粘弹性类型岩石——泰山花岗岩动态凿入特性的实验研究

注意：本论文已在《岩石力学与工程学报》2000，第19卷（5）：613-617发表
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姜清辉 1　罗先启 1　赵统武 2　丰定祥 1
(1.中国科学院武汉岩土力学研究所　武汉　 43 0 0 71 )
 (2.长沙矿冶研究院　长沙　 41 0 0 1 2 )

摘要　运用两点应变测量法的基本原理进行了圆柱形杆末端冲击力测试实验 ,理论值和实测结果取得了一致 ,验证了其可行性 ,并利用两点应变测量法对岩石的动态凿入特性进行实验研究 ,根据最小二乘法曲面拟合 ,得出了更为精确的凿入系数和粘度系数值 ,并在实验的基础上综合得到粘弹性类型岩石——泰山花岗岩力——凿深特性的一般模式。
关键词　两点应变测量法 ,岩石的力 -凿深特性 ,凿入系数 ,粘度系数

TESTING STUDY ON DYNAMIC PENETRATION CHARACTERISTIC FOR TAISHAN GRANITE WITH VISCOUS-EL ASTICITY
Jiang Qinghui1 ,　 Luo Xianqi1 ,　 Zhao Tongwu2 ,　 Feng Dingxiang1
(1 Institute of Rock and Soil Mechanics,The Chinese Academy of Sciences,　 Wuhan　 430 0 71　 China)
(2 Changsha Research Institure of Mining and Metallurgy,　 Changsha　 41 0 0 1 2　 China)

Abstract　 The impact force at the end of a cylindrical rod can be estimated by measuring the strains at two suitable points on it. The theoretical value is in well accordance with the testing resultand the feasibility is verified. The dynamic penetration characteristic of rock is determined in each test by using the technique from two-point strain measurement. The accurate dynamic penetration coefficient and viscous damping coefficientof rock are evaluated by regressive analysis,and the typical model of the force-penetration relation of Taishan granite with viscous-elasticity is determined.
Key words　 two-point strain measurement method, force-penetration characteristic of rock, dynamic penetration coefficient,viscous damping coefficient

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