Research on the application of controlled blasting of foundation pits under complex urban environment
LIU Yanling
ZHANG Yangguang
WU Wei
Abstract：To mitigate the adverse effects of foundation pit blasting on surrounding buildings under construction and residential houses in complex urban environment,this paper combines the actual conditions of the construction site to determine reasonable borehole network parameters,specific charge,and single-stage detonation charge.By adopting integrated technical measures such as delay blasting,vibration isolation trenches,sandbag coverage,and blast mats,the harmful effects of blasting are minimized.Additionally,the NUBOX-8016 intelligent monitoring instrument is utilized to monitor blasting vibrations.Monitoring datas indicates that the delay blasting technique and vibration isolation trenches have a significant effect on reducing blasting vibrations.Compared the measured blasting vibration values with the Sadovsky predicted ones,the blasting vibration is reduced by 43.18%.The protective measures employing sandbags and blast mats effectively control flying rocks and air shock waves,safeguarding surrounding buildings from harmful blasting effects.This study provides a valuable reference for blasting operations in similar complex environments.
Keywords：complex urban environmentfoundation pit controlled blastingdelay blastingvibration isolation trenchsafety protection
Publication Date：2025-12-30
Online Publishing Date：2026-01-12(First online date of this platform, not the publication date of the document)
Pages：5( 34-38 )