Evaluation of Different Rock Failure Approaches

Chhimpa, Vikas Kumar (2017) Evaluation of Different Rock Failure Approaches. MTech thesis.

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Mining and excavation activities are fraught with uncertainties and hence need accurate prediction of deferent forces that influence the design. There exist many rock failure criteria to establish mutual correlation among different force fields. But, no one is comprehensive to be accepted universally. In recent decades, several empirical criteria have been developed to estimate the failure strength of rock mass at insist conditions. The input data for the development of a failure criterion often comes from the intact rock tests. In this investigation, the intact rock recovered from bore hole logs were evaluated in terms of their different strength parameters. Seven established failure criteria as MohrCoulomb, Hoek-Brown, 1980; Bieniawski 1974 and modified by Yudhbir et al., 1983; Ramamurthy et al., 1995; Balmer and Sheorey 1989; Joseph et al., 2012; Bineshian et al., 2014 were considered to evaluate their applicability for the rock mass under study. Ramamurthy approach was observed to exhibit the best fit relation among those. The best fit criterion was adopted to develop site specific empirical non-linear relation.

Item Type:Thesis (MTech)
Uncontrolled Keywords:Intact Rock Strength; Rock Failure Criteria; Linear and Nonlinear Behaviour Models
Subjects:Engineering and Technology > Mining Engineering > Mining Geomechanics
Divisions: Engineering and Technology > Department of Mining Engineering
ID Code:9042
Deposited By:Mr. Kshirod Das
Deposited On:01 May 2018 15:15
Last Modified:01 May 2018 15:15
Supervisor(s):Mishra, Manoj Kumar

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