爆炸与冲击2018，Vol.38Issue(1)：98-105,8.DOI:10.11883/bzycj-2016-0176
基于环形自由面岩土高效爆破的研究与应用
Research and application on efficient rock blasting based on circular free surface
摘要
Abstract
The present work aims to improve the speed and efficiency of rock excavation by forming a circular excavating surface with the coring technique so that the smallest possible charge of explosives would be needed.At first a numerical simulation was conducted to figure out the explosive parameters,then an experiment was carried out to verify the simulation.Two concrete models were fabricated to respectively model the coring blasting and the traditional blasting,with a vibration meter installed to measure the vibration.Comparison of the vibration data and the blasting effects between the two models show that the effect and the blasting vibration of the coring blasting are significantly superior to those of the traditional blasting.And the coring technique was successfully applied to an actual excavation project.The results show that the coring technique can be applied to blasting in circular excavating surface,thus reducing the number of shot holes,controlling the blasting vibration and improving blasting efficiency.This technique can be applied in urban engineering projects.关键词
巷道掘进/岩土爆破/岩芯/环形自由面Key words
rock drift excavation/rock blasting/coring/circular surface分类
数理科学引用本文复制引用
洪泳,马宏昊,沈兆武,任丽杰,崔宇,赵凯..基于环形自由面岩土高效爆破的研究与应用[J].爆炸与冲击,2018,38(1):98-105,8.基金项目
国家自然科学基金项目(51674229,51374189) （51674229,51374189）
中国科学技术大学重要方向项目培育基金项目(WK2480000002) （WK2480000002）
金属矿山安全与健康国家重点实验室开放课题项目(Jskszdsys-2015-03) （Jskszdsys-2015-03）
