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目前,利用弹性波的运动学参数,对水利水电工程岩体性能进行综合评价已得到广泛地应用。尽管如此,评估岩体不均匀程度对岩体性能的影响仍显得十分必要。本文结合工程实例,采用土质学中的“四分法”对岩体不均匀程度给以量的概念,以达到全面评价工程岩体性能的目的。评估岩体不均匀性,必须对岩体内各点的某一性能指标进行系列测试。由于地震法可以迅速地进行大量测试,且方法简单,所以,用来解决岩体不均匀性的评价问题是客观、可靠的。在地震学方法中,可利用纵波速度对岩体不均匀度的指标进行评估。如果对于某种岩石组合有一
At present, using the kinematics parameters of elastic wave, the comprehensive evaluation of the rock mass performance of water conservancy and hydropower projects has been widely used. In spite of this, it is still necessary to evaluate the influence of uneven rock mass on rock properties. In this paper, with the engineering example, the “quadrupole method” in geotechnical studies is used to give the concept of quantity of rock mass non-uniformity, so as to achieve the purpose of comprehensive evaluation of engineering rock mass performance. To evaluate the inhomogeneity of rock mass, a series of tests must be performed on certain performance indicators in each rock mass. Because the seismic method can be rapidly tested and the method is simple, the problem of evaluating the inhomogeneity of rock mass is objective and reliable. In the seismology method, the P-wave velocity can be used to evaluate the index of rock mass unevenness. If there is a rock combination