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依据钻孔岩芯、钻孔电视录像可直观定性判定岩体质量,实施声波测井可准确测定岩体纵波速度,根据可靠的声波测试成果结合对岩芯、孔内录像的直观分析可判断易受多种因素影响的孔内岩体静弹模测试值的可靠度,从而去伪存真,建立有效的动、静参数相关式。对某工程钻孔原位测试所获岩体动、静参数的空间分布特征和相关性等的研究结果表明,岩体的动、静参数与岩体的岩性、结构面发育情况和风化程度等密切相关,其相关式不仅可将大量的声波测试成果转化为静弹性模量,为建基面确定、坝基岩体质量分级、稳定性评价及静弹模分区、应力分析和三维设计提供实用指标,还可供类似地质区域借鉴。
According to drilling core and borehole video recording, the quality of rock mass can be directly and qualitatively evaluated. Acoustic wave logging can accurately determine the longitudinal wave velocity of rock mass. According to the reliable sonic wave test results, the visual analysis of the core and the hole can be easily judged Affected by many factors, the reliability of the test value of the static elastic modulus of the rock mass in the hole, so that the pseudo-trueness exists and the correlation between dynamic and static parameters is established. The results of the study on the spatial distribution characteristics and correlations of dynamic and static parameters of rock mass obtained by in-situ testing of a project indicate that the dynamic and static parameters of rock mass are related to the lithology, the development of the structural plane and the degree of weathering Which can not only convert a large number of sound wave test results into static elastic modulus, but also provide practical application for the determination of foundation surface, the grading of rock mass mass, stability evaluation, static modulus partitioning, stress analysis and 3D design Indicators, but also for similar geological areas for reference.