Skip to main content
Dryad logo

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

Citation

Wen, Lei et al. (2019), Data from: A new method for evaluating the rock mass damage index based on the field point load strength, Dryad, Dataset, https://doi.org/10.5061/dryad.bm76m89

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 author 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 analyze the correlation between the new damage index D_R and the integrality coefficient K_v. This study demonstrates that the presented new method is sensitive to both plasticity and damage in estimating the damage degree of rock masses in underground excavation and tunnel engineering.

Usage Notes