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INTERNATIONAL JOURNAL OF SCIENTIFIC DEVELOPMENT AND RESEARCH International Peer Reviewed & Refereed Journals, Open Access Journal ISSN Approved Journal No: 2455-2631 | Impact factor: 8.15 | ESTD Year: 2016 open access , Peer-reviewed, and Refereed Journals, Impact factor 8.15 |
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| Paper Title: | EXCAVATION DAMAZED ZONE IN TUNNEL |
| Authors Name: | Ashok kumar Sharma |
| Unique Id: | IJSDR2004023 |
| Published In: | Volume 5 Issue 4, April-2020 |
| Abstract: | 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. |
| Keywords: | Prediction, EDZ, instability, tunnelling, explosive charges, geologic- structure |
| Cite Article: | "EXCAVATION DAMAZED ZONE IN TUNNEL", International Journal of Science & Engineering Development Research (www.ijsdr.org), ISSN:2455-2631, Vol.5, Issue 4, page no.147 - 151, April-2020, Available :http://www.ijsdr.org/papers/IJSDR2004023.pdf |
| Downloads: | 000337067 |
| Publication Details: | Published Paper ID: IJSDR2004023 Registration ID:191563 Published In: Volume 5 Issue 4, April-2020 DOI (Digital Object Identifier): Page No: 147 - 151 Publisher: IJSDR | www.ijsdr.org ISSN Number: 2455-2631 |
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