Bhagat, Narayan K. and Singh, Rakesh K. and Mishra, Arvind K. (2026) Optimized Tunnel Blast Design in Indian Geological Conditions: A Comprehensive Analysis. Journal of Engineering Journal , 49 (2). pp. 141-157.

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Abstract

Tunnel excavation in diverse and complex Indian geological conditions necessitates tailored blast design parameters to maximize efficiency and safety. This study evaluates the various advanced tunnel blasting techniques, focusing on applicability of traditional wedge-cut patterns to modern parallel hole cut designs in varied Indian geological conditions. The comparative case studies from different hydroelectric and transportation tunnels across India demonstrate that the parallel-hole cuts enhance energy utilization and are preferred in massive, hard rock formations, while wedge and V-cut patterns excel in moderately jointed and basaltic lithologies. The findings highlight the importance of adaptation of blast patterns to prevalent geological and geotechnical contexts, charge distribution, and precision drilling in optimizing the excavation advance, controlling overbreak, and reducing environmental impacts in Indian tunnel projects.

Item Type:	Article
Uncontrolled Keywords:	Tunnel blast; Cut-pattern design; Advance per blast; Indian Geological conditions
Subjects:	Blasting
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	10 Aug 2026 05:29
Last Modified:	10 Aug 2026 05:29
URI:	https://cimfr.csircentral.net/id/eprint/3049

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