Browse > Article
http://dx.doi.org/10.7474/TUS.2022.32.4.272

The Study on the Verification of the Blasting Effect of Blast Stemming Material and Plug Device  

Ko, Young-Hun (Department of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Tunnel and Underground Space / v.32, no.4, 2022 , pp. 272-284 More about this Journal
Abstract
This study conducted tunnel blasting to evaluate the blasting effect of a shear thickening fluid-based blasting stemming material and a sealed plug device under development. STF single stemming and STF stemming materials were combined with plugs to a tunnel blasting to which the SAV-Cut method was applied, and the advanced rate and fragmentation of tunnel blasting muck pile were compared when sand stemming was used. Tunnel advanced rate was evaluated using a 3D laser scanner. When the STF stemming material and STF stemming material with the plug were compared to the sand stemming material, it increased by 5.7 and 5.36%, respectively. As a result of evaluation of the fragmentation of tunnel blasting muck pile, it was the best when the STF stemming material was applied, and it decreased by about 61% compared to the case of sand stemming blasting. However, no significant improvement in blasting effect was observed with the application of plug devices.
Keywords
Shear thickening fluid; Stemming material; Plug; Advance rate; Fragmentation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 No, Y., 2015, Assessment of advance and overbreak of underground excavation utilizing 3D laser scanner, Master Degree, Chonnam National University.
2 Snelling, O.W. and Hall, C., 1912, The effect of stemming on the efficiency of explosives. USBM-TP, pp. 1-17.
3 Choi, Y., Lee, C., Lee, J., and Kim, J., 2004, Analysis of In-situ Rock Conditions for Fragmentation Prediction in Bench Blasting, Tunnel and Underground Space, 14(5), 353-362.
4 Konya, C.J. and Konya, A., 2018, Effect of Hole Stemming Practices on Energy Efficiecy of Comminution, Energy Efficiency in the Minerals Industry, pp. 31-53.
5 Crawford, N.C., Popp, L.B., Johns, K.E., Caire, L.M., Peterson, B.N., and Liberatore M.W., 2013, Shear thickening of corn starch suspensions: Does concentration matter?, Journal of Colloid and Interface Science, 396, 83-89.   DOI
6 Kim, J., Jung, S., Kim, J., and Kim, J., 2021, Study on Applicability of Asymmetry V-Cut method in Underground Mine, Tunnel and Underground Space, 31(6), 520-533.   DOI
7 Ko, Y., Kwak, K., Seo, S., Jeong, J., Kim, S., and Chung, M., 2022, The Study on Pressure Confine Effect of Blast Stemming Material and Plug Device Using Numerical Analysis Technique, Explosives & Blasting, 40(2), 1-14.
8 Kim, D., Lee, S., Lee, H., Lee, T., and Jeon, S., 2007, A Case Study of the New Center-Cut Method in Tunnel : SAV-Cut (Stage Advance V-Cut), Explosives & Blasting, 25(1), 31-43.
9 Wang, J. and Chen, B., 2005, Theoretical Discussion on Optimization of Blasting Effect in Surface Mining, Express Information of Mining Industry, 24(1), 19-21.