A new method for evaluating the rock mass damage index based on the field point load strength.

ABSTRACT: The damage index is a crucial controlling parameter for rock mass strength and deformation in civil, geological and mining engineering projects. In this study, a new method was proposed for computing the damage index of a rock mass based on the field point load strength. This method provides a strength ratio whose numerator is the point load strength (PLS) of splitting along the pre-existing joint and whose denominator is the PLS of intact rock failure. To validate this method, the authors derived a relationship between the damage index and the integrality coefficient using an empirical relation. Moreover, numerous experimental tests were conducted, including P-wave testing and on-site point load testing. Finally, linear regression analysis was performed to analyse the correlation between

SUBMITTER: Wen L 

PROVIDER: S-EPMC6458395 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature