粘弹性类型岩石——泰山花岗岩动态凿入特性的实验研究  

TESTING STUDY ON DYNAMIC PENETRATION CHARACTERISTIC FOR TAISHAN GRANITE WITH VISCOUS ELASTICITY

作　　者：姜清辉[1] 罗先启[1] 赵统武[2] 丰定祥[1] 

机构地区：[1]中国科学院武汉岩土力学研究所,武汉430071 [2]长沙矿冶研究院,长沙410012

出　　处：《岩石力学与工程学报》2000年第5期613-617,共5页Chinese Journal of Rock Mechanics and Engineering

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 。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 result and 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 coefficient of rock are evaluated by regressive analysis, and the typical model of the force penetration relation of Taishan granite with viscous elasticity is determined.

关 键 词：两点应变测量法 粘度系数 岩石 动态凿入 

分 类 号：TU453[建筑科学—岩土工程]