Explosive Demolition of Buried Unreinforced Concrete Block

doi:10.12972/ksmer.2014.51.1.78

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2014 Vol.51, Issue 1 Preview Page Next Page

Research Paper

Explosive Demolition of Buried Unreinforced Concrete Block 지반에 매립된 무근 콘크리트 블록의 폭파 해체: 양형식·김정규·고영훈·노유송·신명진
Hyung-Sik Yang, Jung-Kyu Kim, Young-Hoon Ko, You-song Noh, Myeong-Jin Shin

28 February 2014. pp. 78-84

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Abstract

Concrete blocks buried in ground were blasted to investigate the influence of constrained condition as a factor of demolition. The results with varying constrained condition show that the smaller the difference in impedances of mass, the easier the energy to pass the boundary. When the charge and constraining material was the same, block was well fragmented as the number of free face increased. Explosive force was applied better to free faces when they were at opposite side of the block.

Keywords

Demolition

Impedance

Free face

Constrained condition

구속조건이 상이한 구조물의 폭파해체 영향을 조사하기 위하여 지반에 매립된 무근 콘크리트 블록을 발파 실험 하였다. 구속상태를 달리하여 실험한 결과 매질의 임피던스의 차이가 작을수록 에너지가 잘 투과하였다. 장약량과 구속물성이 동일한 경우 자유면 수가 증가함에 따라 파쇄도가 증가하였다. 자유면 방향을 달리하여 실험한 결과 자유면이 양 측면에 있을 때 자유면 쪽으로 폭력이 더욱 집중되었다.

키워드

폭파해체

임피던스

자유면

구속상태

References

Choi, Y.W., Kim, J.I. and Kim, I.S., 2002, “The Prediction of Compressive Strength and Slump Value of Concrete Using Neural Networks,” J. Korean Society of Industrial Application, Vol. 5, No. 2, pp. 103-110.
Fujikake, K. and Aemlaor, P., 2013, “Damage of reinforced concrete columns under demolition blasting,” Engineering Structures 55, pp. 116-125.
Kang, C.W., 2005, Blasting Engineering A to Z, Goomibook Press, Seoul, Korea, pp. 11-22.
Kim, Z.K., 1986, Industrial Explosives and Blasting Engineering, Seoul National University Press, Seoul, Korea, pp. 163-185.
Park, H., Park, H.K., Suk, C.G., Yi, Y.S. and Kaneko, K., 2012, “Blast Design for Explosive Demolition of Concrete Foundation,” J. Korean Society of Explosives & Blasting Engineering, Vol. 30, No. 1, pp. 9-16.
Reynolds, J.M., 2003, An Introduction to Applied and Environmental Geophysics, 2003 Korean edition., Sigma Press, Seoul, Korea, pp. 206-222.
Uenishi, K., Takahashi, H., Yamachi, H. and Sakurai, S., 2010, “PC-based simulations of blasting demolition of RC structures,” Construction and Building Materials 24, pp. 2401-2410.

Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
Journal Title(Ko) :한국자원공학회지
Volume : 51
No :1
Pages :78-84
DOI :https://doi.org/10.12972/ksmer.2014.51.1.78

[1] Choi, Y.W., Kim, J.I. and Kim, I.S., 2002, “The Prediction of Compressive Strength and Slump Value of Concrete Using Neural Networks,” J. Korean Society of Industrial Application, Vol. 5, No. 2, pp. 103-110.

[2] Fujikake, K. and Aemlaor, P., 2013, “Damage of reinforced concrete columns under demolition blasting,” Engineering Structures 55, pp. 116-125.

[3] Kang, C.W., 2005, Blasting Engineering A to Z, Goomibook Press, Seoul, Korea, pp. 11-22.

[4] Kim, Z.K., 1986, Industrial Explosives and Blasting Engineering, Seoul National University Press, Seoul, Korea, pp. 163-185.

[5] Park, H., Park, H.K., Suk, C.G., Yi, Y.S. and Kaneko, K., 2012, “Blast Design for Explosive Demolition of Concrete Foundation,” J. Korean Society of Explosives & Blasting Engineering, Vol. 30, No. 1, pp. 9-16.

[6] Reynolds, J.M., 2003, An Introduction to Applied and Environmental Geophysics, 2003 Korean edition., Sigma Press, Seoul, Korea, pp. 206-222.

[7] Uenishi, K., Takahashi, H., Yamachi, H. and Sakurai, S., 2010, “PC-based simulations of blasting demolition of RC structures,” Construction and Building Materials 24, pp. 2401-2410.

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

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