EXPERIMENTAL STUDY ON THE STABILITY OF SURROUNDING ROCK IN TUNNEL BLASTING CONSTRUCTION
In this study, criteria and blasting technologies are introduced in order to control the stability of surrounding rock of tunnel built using drill-and-blast safety. The paper is composed of three parts, namely, a blast vibration propagation law in roof surrounding rock in close proximity to tunnel f...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Czech Technical University, Prague
2018-04-01
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| Series: | Civil Engineering Journal |
| Subjects: | |
| Online Access: | http://www.civilengineeringjournal.cz/archive/issues/2018/2018_1/1-2018-0007.pdf |
| _version_ | 1797762891093377024 |
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| author | Hongxian Fu Hong Kong Jinke Wu |
| author_facet | Hongxian Fu Hong Kong Jinke Wu |
| author_sort | Hongxian Fu |
| collection | DOAJ |
| description | In this study, criteria and blasting technologies are introduced in order to control the stability of surrounding rock of tunnel built using drill-and-blast safety. The paper is composed of three parts, namely, a blast vibration propagation law in roof surrounding rock in close proximity to tunnel face, two formulae to calculate particle critical vibration velocity of shotcrete and key structural element at the roof of tunnel, and innovative technologies of tunnel blasting. The blast vibration propagation law is the base to control the stability of surrounding rock during tunnel blasting. Based on Morhr-Coulomb criterion and the dynamic analysis, two formulae to calculate the critical particle vibration velocity are proposed. Based on a series of trial blasts using electronic detonators, two innovative blasting technologies are derived. One is the blast holes detonated one by one by using electronic detonator, and another is the blast holes detonated by combining initiation system of electronic detonators and nonel detonators. The use of electronic detonators in tunnel blasting not only leads to a smaller blast vibration but also to a smaller extent of the EDZ (excavation damaged zone). |
| first_indexed | 2024-03-12T19:33:47Z |
| format | Article |
| id | doaj.art-bf91f2b882a74189b724ee69bcef647e |
| institution | Directory Open Access Journal |
| issn | 1805-2576 |
| language | English |
| last_indexed | 2024-03-12T19:33:47Z |
| publishDate | 2018-04-01 |
| publisher | Czech Technical University, Prague |
| record_format | Article |
| series | Civil Engineering Journal |
| spelling | doaj.art-bf91f2b882a74189b724ee69bcef647e2023-08-02T04:19:42ZengCzech Technical University, PragueCivil Engineering Journal1805-25762018-04-0120181728710.14311/CEJ.2018.01.0007EXPERIMENTAL STUDY ON THE STABILITY OF SURROUNDING ROCK IN TUNNEL BLASTING CONSTRUCTIONHongxian Fu0Hong Kong 1Jinke Wu 21. Key Laboratory for Urban Underground Engineering of Ministry of Education, Beijing Jiaotong University, Beijing 100044, China2. Beijing Municipal Construction Co., Ltd, Beijing 100089,China2. Beijing Municipal Construction Co., Ltd, Beijing 100089,ChinaIn this study, criteria and blasting technologies are introduced in order to control the stability of surrounding rock of tunnel built using drill-and-blast safety. The paper is composed of three parts, namely, a blast vibration propagation law in roof surrounding rock in close proximity to tunnel face, two formulae to calculate particle critical vibration velocity of shotcrete and key structural element at the roof of tunnel, and innovative technologies of tunnel blasting. The blast vibration propagation law is the base to control the stability of surrounding rock during tunnel blasting. Based on Morhr-Coulomb criterion and the dynamic analysis, two formulae to calculate the critical particle vibration velocity are proposed. Based on a series of trial blasts using electronic detonators, two innovative blasting technologies are derived. One is the blast holes detonated one by one by using electronic detonator, and another is the blast holes detonated by combining initiation system of electronic detonators and nonel detonators. The use of electronic detonators in tunnel blasting not only leads to a smaller blast vibration but also to a smaller extent of the EDZ (excavation damaged zone).http://www.civilengineeringjournal.cz/archive/issues/2018/2018_1/1-2018-0007.pdfTunnel EngineeringBlastingAttenuation Law of Blast VibrationStability |
| spellingShingle | Hongxian Fu Hong Kong Jinke Wu EXPERIMENTAL STUDY ON THE STABILITY OF SURROUNDING ROCK IN TUNNEL BLASTING CONSTRUCTION Civil Engineering Journal Tunnel Engineering Blasting Attenuation Law of Blast Vibration Stability |
| title | EXPERIMENTAL STUDY ON THE STABILITY OF SURROUNDING ROCK IN TUNNEL BLASTING CONSTRUCTION |
| title_full | EXPERIMENTAL STUDY ON THE STABILITY OF SURROUNDING ROCK IN TUNNEL BLASTING CONSTRUCTION |
| title_fullStr | EXPERIMENTAL STUDY ON THE STABILITY OF SURROUNDING ROCK IN TUNNEL BLASTING CONSTRUCTION |
| title_full_unstemmed | EXPERIMENTAL STUDY ON THE STABILITY OF SURROUNDING ROCK IN TUNNEL BLASTING CONSTRUCTION |
| title_short | EXPERIMENTAL STUDY ON THE STABILITY OF SURROUNDING ROCK IN TUNNEL BLASTING CONSTRUCTION |
| title_sort | experimental study on the stability of surrounding rock in tunnel blasting construction |
| topic | Tunnel Engineering Blasting Attenuation Law of Blast Vibration Stability |
| url | http://www.civilengineeringjournal.cz/archive/issues/2018/2018_1/1-2018-0007.pdf |
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