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根据现场点荷载强度试验的统计结果和损伤力学原理,提出了一种新的岩体损伤度计算方法,即点荷载强度计算方法.为了验证该方法的可靠性和准确性以及这种方法计算的岩体损伤度与岩体完整性指数之间的关系,进行了一系列理论推导和现场岩体声波测试与实验室岩石声波测试.结果表明:该方法计算的损伤度与岩体完整性系数表现出很好的一致性,并且该方法计算的损伤度与巷道松动圈内岩体损伤度的变化趋势一致.实测值与理论值之间的误差都在7%以内,说明通过该方法计算岩体损伤度有较高的准确性和可靠性.
According to the statistical results of on-site load strength test and the principle of damage mechanics, a new method for calculating the damage degree of rock mass is proposed, which is the point load strength calculation method.In order to verify the reliability and accuracy of this method and the calculated results of this method A series of theoretical derivations and on-site rock mass acoustic wave tests and laboratory rock acoustic wave tests have been carried out.The results show that the calculated damage degree and rock mass integrity coefficient And the damage degree calculated by this method is consistent with the change tendency of the damage degree of the rock mass in the loose ring of the roadway.The error between the measured value and the theoretical value is within 7%, indicating that the rock mass Damage degree has higher accuracy and reliability.