Tunnel Overbreak Management System Using Overbreak Resistance Factor
When tunnel is excavated via drilling and blasting, the excessive overbreak is the primary cause of personal or equipment safety hazards and increasing the cost of the tunnel operation owing to additional ground supports such as shotcrete. The practical management of overbreak is extremely difficult...
| Main Author: | |
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| Format: | Journal Article |
| Language: | Korean |
| Published: |
KOREAN SOCIETY FOR ROCK MECHANICS AND ROCK ENGINEERING
2020
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| Subjects: | |
| Online Access: | http://eng.ksrm.or.kr/html/ http://hdl.handle.net/20.500.11937/78257 |
| _version_ | 1848763948053037056 |
|---|---|
| author | Jang, Hyong Doo |
| author_facet | Jang, Hyong Doo |
| author_sort | Jang, Hyong Doo |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | When tunnel is excavated via drilling and blasting, the excessive overbreak is the primary cause of personal or equipment safety hazards and increasing the cost of the tunnel operation owing to additional ground supports such as shotcrete. The practical management of overbreak is extremely difficult due to the complex causative mechanism of it. The study examines the relationship between rock mass characteristics (unsupported face condition, uniaxial compressive strength, face weathering and alteration, discontinuities- frequency, condition and angle between discontinuities and tunnel contour) and the depth of overbreak through using feed-forward artificial neuron networks. Then, Overbreak Resistance Factor (ORF) has been developed based on the weights of rock mass parameters to the overbreak phenomenon. Also, a new concept of tunnel overbreak management system using ORF has been suggested. |
| first_indexed | 2025-11-14T11:11:34Z |
| format | Journal Article |
| id | curtin-20.500.11937-78257 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | Korean |
| last_indexed | 2025-11-14T11:11:34Z |
| publishDate | 2020 |
| publisher | KOREAN SOCIETY FOR ROCK MECHANICS AND ROCK ENGINEERING |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-782572020-06-16T00:10:31Z Tunnel Overbreak Management System Using Overbreak Resistance Factor Jang, Hyong Doo 0914 - Resources Engineering and Extractive Metallurgy When tunnel is excavated via drilling and blasting, the excessive overbreak is the primary cause of personal or equipment safety hazards and increasing the cost of the tunnel operation owing to additional ground supports such as shotcrete. The practical management of overbreak is extremely difficult due to the complex causative mechanism of it. The study examines the relationship between rock mass characteristics (unsupported face condition, uniaxial compressive strength, face weathering and alteration, discontinuities- frequency, condition and angle between discontinuities and tunnel contour) and the depth of overbreak through using feed-forward artificial neuron networks. Then, Overbreak Resistance Factor (ORF) has been developed based on the weights of rock mass parameters to the overbreak phenomenon. Also, a new concept of tunnel overbreak management system using ORF has been suggested. 2020 Journal Article http://hdl.handle.net/20.500.11937/78257 Korean http://eng.ksrm.or.kr/html/ https://creativecommons.org/licenses/by-nc/3.0/ KOREAN SOCIETY FOR ROCK MECHANICS AND ROCK ENGINEERING fulltext |
| spellingShingle | 0914 - Resources Engineering and Extractive Metallurgy Jang, Hyong Doo Tunnel Overbreak Management System Using Overbreak Resistance Factor |
| title | Tunnel Overbreak Management System Using Overbreak Resistance Factor |
| title_full | Tunnel Overbreak Management System Using Overbreak Resistance Factor |
| title_fullStr | Tunnel Overbreak Management System Using Overbreak Resistance Factor |
| title_full_unstemmed | Tunnel Overbreak Management System Using Overbreak Resistance Factor |
| title_short | Tunnel Overbreak Management System Using Overbreak Resistance Factor |
| title_sort | tunnel overbreak management system using overbreak resistance factor |
| topic | 0914 - Resources Engineering and Extractive Metallurgy |
| url | http://eng.ksrm.or.kr/html/ http://hdl.handle.net/20.500.11937/78257 |