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http://dx.doi.org/10.9711/KTAJ.2022.24.6.483

A study on the effect of blasting vibration and the optimal blasting offset according to the depth of tunnel  

Kong, Suk-Min (Dept. of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Technology)
Choi, Sang-Il (Dept. of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Technology)
Kim, Yeong-Bae (Mirae E&C)
Noh, Won-Seok (Mirae E&C)
Kim, Chang-Yong (Dept. of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Technology)
Lee, Seong-Won (Dept. of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.24, no.6, 2022 , pp. 483-494 More about this Journal
Abstract
Owing to the saturation of ground spaces in downtown areas, underground spaces are being developed increasingly. Underground spaces are utilized for transportation, water supply and sewerage, communication zones, electric power zones, and various cultural complexes. In Korea, for excavating underground spaces, blasting methods using gunpowder such as the New Austrian Tunneling Method (NATM) are mainly used. However, the blasting method causes vibration and noise during tunnel excavation, generating many complaints from residents in the vicinity of the excavation site. To address this problem, various methods have been developed, and recently, vibration and noise have been reduced using deep excavation. This study predicts blast vibration changes according to the depth, under the same blasting and tunnel conditions, using numerical analysis based on the blast vibration measurement data of the GTX-A route, the tunnel cross-section drawings, and ground investigation reports. Furthermore, the necessary separation distance from densely populated areas such as residential areas is suggested by analyzing the trend of decreasing blast vibration according to the distance from ground surface directly above the blasting location.
Keywords
Tunnel excavation; Blasting method; Blast vibration; Deep excavation; Numerical analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 Ahn, J.K., Park, D.H., Shin, Y.W., Park, I.J. (2014), "Generation of blast load time series under tunneling", Journal of Korean Tunnelling and Underground Space Association, Vol. 16, No. 1, pp. 51-61.   DOI
2 Hino, K. (1959), Theory and Practice of Blasting, Nippon Kayaku Co., Ltd., Tokyo, Japan, pp. 1-11.
3 Itasca Consulting Group Inc. (2017), "FLAC 3D 6.0 manual: examples (An excerpt from FLAC3D help)", Itasca Consulting Group Inc.:St. Paul, Minneapolis, United States, pp. 39-52.
4 Choi, J.S., Lee, J.M., Jo, M.S. (2006), "A calculation of blasting load using input identification method & evaluation of structure's vibration in numerical analysis", Tunnel and Underground Space, Vol. 16, No. 3, pp. 232-240.
5 MOLIT (2016), Tunnel Standard Specification, Human Culture Arirang, Korea, pp. 1-11.
6 Jeon, S.S., Jang, Y.W., Jung, D.H. (2007a), "Estimation of the blasting distance satisfying allowable peak particle velocity - analytical & numerical analysis approach", Journal of the Korean Society of Hazard Mitigation, Vol. 7, No. 1, pp. 39-46.
7 Jeon, S.S., Kim, D.S., Jang, Y.W. (2007b), "Stability assessment of concrete lining and rock bolts of the adjacent tunnel by blast-induced vibration", Journal of the Korean Geotechnical Society, Vol. 23, No. 10, pp. 33-45.   DOI
8 Kim, Y.G. (2020), "Review on underground safety management in Korea", Magazine of Korean Tunnelling and Underground Space Association, Vol. 22, No. 1, pp. 4-19.
9 Kong, S.M., Kim, A.R., Byun, Y.S., Shim, S.B., Choi, S.I., Lee, S.W. (2022), "Analysis of stability and required offset with vibration velocity considering conditions of bedrock and explosive charges using the TBM and NATM extension blasting method", Applied Sciences, Vol. 12, No. 7, pp. 3473-3490.   DOI
10 MOLIT (2002), "Blasting noise review of vibration tolerance standards", Office of the Inspector General of the Ministry of Construction and Transportation, Korea, pp. 9-29.
11 Moon, H.N. (2010), A study on the vibration propagation characteristics of controlled blasting methods and explosives in tunnel, Master Thesis, Hanyang University, pp. 1-98.
12 Oh, W.K. (2008), A study on the ground reinforcement for constructability of tubular roof construction method, Master's Thesis, Hanyang University, p. 45.
13 Son, J.H., Kim, B.R., Lee, S.J., Kim, N.S., Lee, H., Choi, S.O. (2019), "A numerical study on the reduction effect of blasting vibration with cut method", Explosives and Blasting, Vol. 37, No. 1, pp. 1-13.   DOI
14 Starfield, A.M., Pugliese, J.M. (1968), "Compression waves generated in rock by cylindrical explosive charges: A comparison between a computer model and field measurements", International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, Vol. 5, No. 1, pp. 65-77.   DOI