Research and Engineering Application of Wall-Outside Blasting Charge in Blasting Demolition of Underground Thin-Walled Structure

Abstract:

When the blasting method is used to demolish the underground thin-walled structure, the safety misadventure occurs possibly due to the small burden, the heavy workload of the drilling and excavation as well as the long construction time, thus, its demolition is more difficult than that of the foundation. This paper describes the new underground thin-walled structure blasting demolition method - the wall-outside blasting charge method and the primary discussion about the blasting mechanism of the wall-outside blasting charge method, which is used in engineering practice. The demolition practice has proved that the wall-outside blasting charge method is a safe, simple and efficient and economic method to demolish the thin-walled structure such as underground sinking well and the pool, its blasting fragmentation is uniform, the fly-rock is easily controlled, and this method has the good economic benefit and the application prospect.

• Periodical: Advanced Materials Research (Volume 739)
• Pages: 314-317
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.739.314
• Online since: August 2013
• Authors: De Zhi Chen, Shun Xiang Xu
• Keywords: Blasting Demolition, Thin-Walled Structure, Underground, Wall-Outside Blasting Charge

References

[1] Niu Qiang: Rock blasting mechanis. Liaoning: Press of Northeastern University of Technology, (1990).

[2] Chen Dezhi et al.: Wall-outside blasting charge for blasting demolition of sinking well wall. Blasting 1999 (Special Issue), pp.43-46.

DOI: 10.4028/www.scientific.net/amr.739.314