Meena, Manish Kr. and Singh, Ashok Kr and Dwivedi, R. D. and Mohnot, J. K. (2025) Failure Mechanism of a Large Wedge in Open Cast Mine Composed of a Granite Porphyry Rock Mass of Aravali Region - A Case Study. Journal of Rock Mechanics and Tunnelling Technology, 31 (1). pp. 31-43. ISSN 0253-4126

Full text not available from this repository.

Abstract

The present study aims to investigate the mechanism involved in a massive wedge failure disaster at the Dadam Granite Mines in Haryana. This failure, with a block volume of about 2700 m³, occurred on the night of December 31, 2021. The wedge failure took place at the boundary junction of adjoining Pit Nos. 37 and 38, near the Aravali hills revenue forest area. In light of this accident, large wedges formation, initiation, and translation were studied. Field investigations revealed that kinematically unfavourable joints led to the massive wedge failure. Water inflow within the open and highly persistent joints (22 to 55 m) washed out the soft-infilled materials (clay and silts). This created a slip surface along the oblique joint, causing a sudden decrease in shear strength along the basal joint plane. The surface joint acted as a release plane, with flow imprints of the infilled materials visible on the leftover vertical and daylighted oblique joint walls. The back-calculated Slope Mass Rating (SMR) using the continuous function placed the kinematic potential wedge into Class IV and V, indicating entirely unstable conditions. Based on detailed field investigation and kinematic analysis, the study discusses the potential processes underlying such catastrophic wedge failures.

Item Type:	Article
Uncontrolled Keywords:	Mine slope stability; Slope Mass Rating; Kinematic analysis; Wedge failure; Open cast mine
Subjects:	Blasting
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	18 Sep 2025 11:00
Last Modified:	18 Sep 2025 11:00
URI:	http://cimfr.csircentral.net/id/eprint/2906

Actions (login required)

View Item