电子雷管起爆条件下隧道掏槽孔与辅助孔的延时优化试验研究  

Experimental Study on Delay Time Optimization of Tunnel Cutting Holes and Caving Holes under Electronic Detonator Initiation Condition

作　　者：李洪伟[1] 吴延梦 吴立辉 杨赛群 管月强 黄昕旭 章万龙[3] LI Hongwei;WU Yanmeng;WU Lihui;YANG Saiqun;GUAN Yueqiang;HUANG Xinxu;ZHANG Wanlong(School of Chemical Engineering,Anhui University of Science and Technology,Huainan 232000,Anhui,China;Ma’anshan Jiangnan Chemical Co.,Ltd.,Ma'anshan 243000,Anhui,China;Huainan Shuntai Chemical Industry Co.,Ltd.,Huainan 232000,Anhui,China)

机构地区：[1]安徽理工大学化学工程学院,安徽淮南232000 [2]马鞍山江南化工有限责任公司,安徽马鞍山243000 [3]淮南舜泰化工有限责任公司,安徽淮南232000

出　　处：《高压物理学报》2023年第1期169-179,共11页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金(11872002);安徽省教育厅高校科学研究项目(13190248)。

摘　　要：起爆延时严重影响隧道爆破掘进效率,研究隧道精确控制爆破中岩石的破碎效果和掘进效率具有重要意义。为此,开展了隧道爆破中掏槽孔与辅助孔之间延时的相似模型试验研究,分析了不同起爆延时情况下岩石的破碎特征。模型试验表明,在隧道爆破中精确延时电子雷管对于提高爆破效果具有明显优势,得到了一定条件下模型试验与现场试验中起爆延时的相似关系。由现场试验可知:掏槽孔与辅助孔之间的最佳延时范围为15~25 ms,此时炮孔的利用率最高。结合相似理论的模型试验,得到最佳延时范围为8~24 ms,与现场试验结果具有较好的一致性,研究结果对隧道爆破掏槽孔与辅助孔之间的延时选取具有指导意义。The initiation delay time seriously affects the efficiency of tunnel blasting excavation.It is of great significance to study the improvement of rock fragmentation effect and tunneling efficiency under the electronic detonator initiation condition via precise control blasting.The similarity model test of delay time between the cutting holes and the caving holes in tunnel blasting was conducted,and the rock fragmentation characteristics under different delay time were analyzed.The results show that it can be seen from the model test that the electronic detonator has obvious advantages in improving the blasting effect in tunnel blasting for its precise delay ability.In addition,the similarity relationship of the initiation delay time between the model and field tests was summarized.According to the field test,when the best delay time between the cutting holes and the caving holes is 15−25 ms,the utilization rate of the blast-holes is the highest.Guided by the similarity theory,the optimum delay time drawn from the model test is 8–24 ms,showing a good agreement with the field test.This paper is of reference for the selection of delay time between the cutting holes and the caving holes in tunnel blasting.

关 键 词：隧道爆破 电子雷管 延时 微差爆破 

分 类 号：O346.1[理学—固体力学] TD235[理学—力学]