Selection of Optimal Threshold of Generalised Rock Quality Designation Based on Modified Blockiness Index

Rock quality designation (RQD) is a critical index for quantifying the degree of rock mass jointing; it is widely used for evaluating the qualities and stabilities of engineering rock masses. However, the use of traditional RQD may yield inaccurate assessments because only core pieces longer than 10...

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Bibliographic Details
Main Authors: Qingfa Chen, Tingchang Yin, Hangyu Jia
Format: Article
Language:English
Published: Hindawi Limited 2019-01-01
Series:Advances in Civil Engineering
Online Access:http://dx.doi.org/10.1155/2019/1340549