EXCAVATION DAMAZED ZONE IN TUNNEL
Prediction, EDZ, instability, tunnelling, explosive charges, geologic- structure
Due to shattering effect of blasting, mainly three zones are formed around the tunnel. During tunnel excavation, blast induced damage or Excavation Damage Zone (EDZ) interacts with existing geological structure of the rock-mass. This can and cause over-break and stability issues during and after excavation. Today the EDZ is determined by correlation-based methods, although direct measurement is possible. This paper throws light for, in depth exploration methods for EDZ assessment during excavation The prediction of damage to the rock mass is a very important factor to evaluate the quality of the excavation process in tunnelling, so that it would allow the optimization of explosive charges utilized in successive blasting rounds, as well as lowering risks of instability from rock loosening, less support costs and water inflows. Upon developing a mathematical approach to evaluate rock damage from underground blasts, practical applications were accomplished to confirm it, both in tunneling excavations and underground mining. Examples of these studies are described in detail.
"EXCAVATION DAMAZED ZONE IN TUNNEL", IJSDR - International Journal of Scientific Development and Research (www.IJSDR.org), ISSN:2455-2631, Vol.5, Issue 4, page no.147 - 151, April-2020, Available :https://ijsdr.org/papers/IJSDR2004023.pdf
Volume 5
Issue 4,
April-2020
Pages : 147 - 151
Paper Reg. ID: IJSDR_191563
Published Paper Id: IJSDR2004023
Downloads: 000347199
Research Area: Engineering
Country: Bhopal, State, India
ISSN: 2455-2631 | IMPACT FACTOR: 9.15 Calculated By Google Scholar | ESTD YEAR: 2016
An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 9.15 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator
Publisher: IJSDR(IJ Publication) Janvi Wave
