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岩石力学试验是岩石力学的基础,是研究岩石力学与工程的重要手段之一,但岩石力学试验的结果往往要受到很多因素的影响,试验结果的离散是普遍存在的,有时可能会得到完全相反的结论。以超声波传播速度、回弹值与岩石强度之间相互关系为基础,综合两种方法的优点,把超声-回弹综合法应用到岩石试样选择中,在正式试验之前,挑出那些可能会使试验结果很离散的试样,可以提高室内试验的测试准确程度。实践表明,这种综合选样方法具有较好的适用性,对有缺陷的试样有较好的识辨能力,而且方便、快速、对试样没有损伤,同时,超声-回弹综合法可以较好地预测岩石的抗压强度。因此,这种综合方法在岩石试样选择和强度预测中值得借鉴。
Rock mechanics test is the foundation of rock mechanics and is one of the most important means to study rock mechanics and engineering. However, the results of rock mechanics test are often influenced by many factors. The discrepancy of test results is ubiquitous and may sometimes be completely opposite Conclusion. Based on the relationship between ultrasonic propagation speed, springback value and rock strength, the ultrasonic-springback method is applied to rock sample selection based on the advantages of both methods. Before the formal test, The test results are very discrete samples, can improve the accuracy of indoor test. Practice shows that this comprehensive sampling method has good applicability, good identification of defective samples, and convenient, fast, no damage to the sample, at the same time, ultrasonic - rebound synthesis method can Better prediction of rock compressive strength. Therefore, this comprehensive method is worthy of reference in rock sample selection and strength prediction.