PATEL, VIMAL and KAUSHIK, AMAR PRAKASH and Himanshu, Vivek Kumar and Kumar, Micheal (2026) Comparative Analysis of Blast-Induced Vibration in Opencast and Underground Mines: A Case Study from Lower Gondwana Coal Seams, Dhanbad”. TIJER - TIJER - INTERNATIONAL RESEARCH JOURNAL , 13 (3).

Full text not available from this repository.

Abstract

Title :“Comparative Analysis of Blast-Induced Vibration in Opencast and Underground Mines: A Case Study from Lower Gondwana Coal Seams, Dhanbad” Abstract Ground vibrations caused by blasting presents major challenges for safe and productive mining operations as it affects the slope stabilities, underground excavation and adjacent communication lines. In this paper, a comparative investigation of vibration propagation characteristics of opencast and underground blasting has been described based on a set of data collected from a sample of hundred blasts for a wide variety of geomining conditions. Peak particle velocity (PPV), attenuation trend and frequency characteristics have been studied using empirical, regression and machine learning methods. The results obtained reveal that ground vibrations (PPV) generated by underground blasting are twice of that generated in open cast case at locations near source owing to the high confinement effect, while wider spatial propagation with lower attenuation rate is observed in opencast blasting. A regression model based on scaled distance well predicts the ground vibrations with the best-fit relation; PPV=76.72×(SD) -0.56 which agrees well with the observed data. The geologic parameters such as Joint Factor (Jf) and Geological Strength Index (GSI) are found to have significant influence on the ground vibration attenuation trend. This study is representative of the general geomining scenarios typically encountered in Gondwana coal bearing formations of Jharia Coalfield collieries (Kuya collieries- Underground & Opencast Mines) of the Damodar Valley basin in Dhanbad. The coal-bearing formations, primarily Barakar and Raniganj formations, consist of alternating sequences of sandstone, shale, and coal seam

Item Type:	Article
Subjects:	Blasting
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	07 Apr 2026 05:55
Last Modified:	07 Apr 2026 05:55
URI:	https://cimfr.csircentral.net/id/eprint/2967

Actions (login required)

View Item