TESTING STUDY ON DYNAMIC PENETRATION CHARACTERISTIC FOR TAISHAN GRANITE WITH VISCOUS-ELASTICITY
粘弹性类型岩石--泰山花岗岩动态凿入特性的实验研究

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.