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测定岩石的弹性参数,是作好技术先进,经济合理的地下工程设计的基础。地下工程中,岩石一般处于双向或三向应力状态,因此在多向应力状态下测定岩石弹性参数较为合理。以劈裂试验及三轴压缩试验方法的应力分析为基础,本文提出计算岩石弹性参数的新方法。文中利用九种不同岩石的劈裂试验结果,求出了弹性模量及泊桑比,并与单向压缩试验求得的参数作了对比,其结果证明所提出的方法可以满足实用要求。
Determining the elastic parameters of rock is the basis for making the underground engineering design with advanced technology and reasonable economy. In underground engineering, rocks are usually in two-way or three-direction stress state, so it is more reasonable to measure rock elasticity under multi-stress state. Based on the stress analysis of splitting test and triaxial compression test, a new method for calculating the elastic parameters of rock is proposed in this paper. In this paper, the elastic modulus and Poisson ’s ratio were obtained by using the splitting test results of nine different rocks. Comparing with the parameters obtained from uniaxial compression test, the results show that the proposed method can meet the practical requirements.