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针对燕山期的蚀变闪长岩静动态基础力学参数缺乏的问题.采用现场取样、现场试验及实验室实验的方法,分别对闪长岩岩石样本进行了密度测试、点载荷仪的点载荷试验、压力机的单轴抗压强度试验和声波测试仪的纵横波测试试验.得到了该燕山期蚀变闪长岩的密度为2 848 kg/m3、点载荷强度为7.12 MPa,单轴抗压强度为140.68 MPa,纵波平均波速为4 797 m/s,横波平均波速为2 705 m/s,并在此试验数据基础上运用弹性波理论计算公式得出了该闪长岩试件的动弹性模量52.8GPa和动泊松比0.267.该试验结果为制定井筒爆破方案设计及确定脆性岩石材料本构模型参数提供参考数据.
In view of the lack of static and dynamic basic mechanics parameters of altered diorite in Yanshan period, the density of diorite samples was measured by on-site sampling, field test and laboratory test, and the point load test , The uniaxial compressive strength test of the press and the longitudinal and transverse wave test of the sonic tester, the density of this Yanshanian altered diorite is 2 848 kg / m3, the point load strength is 7.12 MPa, uniaxial compression The average wave velocity of the longitudinal wave is 4 797 m / s and the average wave velocity of the transverse wave is 2 705 m / s. Based on the experimental data, the dynamic elasticity of the specimen is obtained by using the elastic wave theory calculation formula. Modulus 52.8GPa and dynamic Poisson’s ratio 0.267.The test results provide reference data for designing the wellbore blasting scheme design and determining constitutive model parameters of brittle rock materials.