Modified Presplit Blast Design and its Implementation to Control Near Field Blast Vibrations


Metro projects
Drilling and Blasting
Controlled Blasting
Near field Blast Vibrations
Peak Particle Velocity

How to Cite

Rasagna D, Reddy K, Singh S, Das S. Modified Presplit Blast Design and its Implementation to Control Near Field Blast Vibrations. Glob. J. Earth Sci. Eng. [Internet]. 2021 Dec. 16 [cited 2022 Jun. 28];8:62-71. Available from:


The development of urban infrastructure projects like metro rail projects in the major cities in India is one of the challenging tasks due to several site construction and operating constraints. These rapid transit systems (RTS) are conceived to minimise traffic congestion by providing commuters with fast and efficient transportation alternatives. One such project is the Phase-II of the ongoing Bangalore Underground Metrorail Project. The design and construction of the metro rail project require sound engineering judgment and field experience on envisaged strata conditions along the proposed route alignment.

The important factors that govern the excavation cycle depend on Rock mass material properties, efficient blast design and construction performance. All these considerations needs to be evaluated for achieving safe, cost-effective excavation design layouts. Proper blast design and safe blasting operations play a key role in achieving good fragmentation, minimising over break and equipment downtime. Site-specific innovative methods on controlled blasting techniques are being experimented with and demonstrated to minimise the ground vibrations. The major challenge lies with the design of efficient and smooth wall blasting techniques to safeguard the old heritage buildings and other subsurface structures and utilities.



IS: 1892-1979(Reaffirmed 2002) Indian Standard Code of Practice for subsurface Investigation for Foundation.

Smeeth WF. (1921): Peninsular Gneiss Complex, Memoirs of Geological Survey of India. 1935; 68: 109.

DGMS (Tech)/S&T, No.7, Dated 29-08-1997.

Ashley C, Parkes DB. Blasting in urban areas, Jl. Tunnels &Tunnelling, 1976; 8(6): 60-67.

Fadeev AB, Glosman LM, Kurtuzov MI, Safonov LV. Seismic control of mine and quarry blasting in the USSR. Proc. 6th ISRM Conf. Rock Mechanics, Canada, 1987; 1: 617-619.

Nicholls HR, Johnson CF, Duvall WL. Blasting vibrations and their effects on structures, HSRM Bull. 1971; 656.

Sastry VR, Ram Chandar K. Risk Management in the near vicinity of blasting. The Indian Mining & Engineering Journal 2004; March: 19-28.

Calder PN, Tuomi JN. Control blasting at shermanmine,Proc. 6th Annual Conf. on ‘Explosives and blasting technique’, 1980; 312–330, Montville, OH, Society of Explosives Engineers.

Chiappetta RF. The importance of pre-splitting and fieldcontrols to maintain stable high walls, eliminate coal damage andover break, Proc. 10th High-tech Seminar on ‘State of the art,blasting technology, instrumentation and explosives application’,GI-48. 2001; 22–26, Nashville, TN.

Enayatollahi I, Aghajani-Bazzazi A. Evaluation of salt-ANFOmixtures in back break reduction by data envelopment analysis, rockfragmentation by blasting, Proc. 9th Int. Symp. on ‘Rock fragmentation by blasting’, FRAGBLAST 2010; 9: 127–133, Granada, Spain.

Karimi Nasab S, Hojat A, Kamkar-Rouhani A, Akbari Javar H, Maknooni S. Successful use of geoelectrical surveys inarea 3 of the Gol-e-Gohar Iron Ore Mine, Iran, MineWaterEnviron., 2011; 30(3): 208-215.

Singh PK, Roy MP, Paswan RK. Controlled blastingfor long term stability of pit-walls. Int J Rock Mech Min Sci. 2014; 70: 388–399.

Workman JL, Calder PN. Predicting and controllingexcessiveflyrock, Coal, 1994; 99(9): 26.

Worsey PN. Effect of discontinuity orientation on the successof pre-split blasting, Proc. Tenth Annual Conf. on ‘Explosivesand blasting technique’, 1984; 197–217, Orlando, FL, Society ofExplosives Engineers.

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Copyright (c) 2021 Lakshmi Satya Rasagna Devulapalli, K.S.N. Reddy, Sanjay Singh, Sudip Das