隧道爆破振动控制方法研究  

Research on method of controlling tunnel blasting vibration

作　　者：刘媛媛[1] 汤志健 杜明燃 LIU Yuanyuan;TANG Zhijian;DU Mingran(China Explosive Materials Trade Association,Beijing 100089,China;Beijing CAS-Mechanics Blasting Co.,Ltd.,Beijing 101318,China;School of Chemical Engineering,Anhui University of Science&Technology,Huainan 232001,China)

机构地区：[1]中国爆破器材行业协会,北京100089 [2]北京中科力爆炸技术工程有限公司,北京101318 [3]安徽理工大学化学工程学院,安徽淮南232001

出　　处：《煤矿爆破》2023年第1期6-11,22,共7页Coal Mine Blasting

摘　　要：为了完善隧道爆破振动安全判据,基于能量原理,以最大瞬时输入能量衡量首次超越破坏,以滞回耗能衡量累积损伤破坏,将二者相结合作为隧道爆破振动安全判据。以北京国道109高速公路工程三工区爆破施工现场为依托,选择合理的间距布设振动监测点,以实测数据为基础,对各点瞬时输入能量和滞回耗能进行计算。同时,选取不同的掏槽孔延期时间,监测不同距离下的振动数值,进行瞬时输入能量和滞回耗能计算。研究表明:当瞬时输入能量足够大时,隧道结构会在短时间内发生破坏,当滞回耗能达到一定值时,隧道结构会发生累积损伤破坏;基于瞬时输入能量与滞回耗能二者相结合使用的安全判据具有科学性与全面性;选择合理的掏槽孔延期时间需要考虑爆源与保护物之间的距离。In order to improve the safety criterion of tunnel blasting vibration,based on the energy principle,the maximum instantaneous input energy is used to measure the first-passage damage,and the hysteresis energy consumption is used to measure the cumulative damage.The combination of the two mentioned above is used as the safety criterion of tunnel blasting vibration.Based on the blasting construction site of the third work area of Beijing National Highway 109 Expressway Project,the reasonable spacing is selected to set up vibration monitoring points.Based on the measured data,the instantaneous input energy and hysteresis energy consumption of each monitoring point are calculated.At the same time,different delay time of cutting hole is selected to monitor the vibration value at different distance,and the instantaneous input energy and hysteresis energy consumption are calculated.The results show that when the instantaneous input energy is large enough,the structure of the tunnel is destroyed in a short time,and when the hysteresis energy reaches a certain value,the cumulative damage appears in the tunnel structure.The safety criterion based on the combination of instantaneous input energy and hysteresis energy consumption is scientific and comprehensive.Choosing a reasonable cut hole delay time needs to consider the distance between the explosion source and the protective object.

关 键 词：爆破振动 安全判据 瞬时输入能量 滞回耗能 

分 类 号：TD235[矿业工程—矿井建设]