隧道爆破振动中掏槽段的波形预测方法  

Waveform prediction method of cutting section in tunnel blasting vibration

作　　者：望远福 李云赫 赵岩 范杰林 WANG Yuanfu;LI Yunhe;ZHAO Yan;FAN Jielin(Xinjiang Transportation Comprehensive Administrative Law Enforcement Bureau,Urumqi 830000,China;School of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 300401,China;Hebei Provincial Key Laboratory for Civil Engineering Diagnosis,Transformation and Disaster Resistance,Zhangjiakou 075000,China)

机构地区：[1]新疆交通运输综合行政执法局,新疆乌鲁木齐830000 [2]河北工业大学土木与交通学院,天津300401 [3]河北省土木工程诊断、改造与抗灾重点试验室,河北张家口075000

出　　处：《中国测试》2024年第10期150-156,共7页China Measurement & Test

基　　金：国家自然科学基金(52078468,51878242);河北省高等学校科学研究基金资助项目(BJK2024118);石家庄市驻冀高校基础研究基金资助项目(241790797A,241790877A)。

摘　　要：为探讨隧道爆破振动响应的分布特征,对掏槽爆破诱发的爆破振动波形展开预测。基于等效的球形爆源理论,引入一种地表爆破振动波形的预测方法,首次将频率的影响纳入爆破振动波形的预测研究中,推导得到等效球形爆破荷载作用下的地表爆破振动波形的符号表达式。以此为基础,构造形式简洁的爆破振动波形预测函数。依托具体隧道爆破的现场监测数据对预测函数的可靠性进行验证。结果表明:理论波形与实测波形在爆破振动曲线总体趋势上表现出良好的一致性。二者对应的质点峰值速度与振动周期基本相同。这种对比结果可验证该文引入方法的可行性。In order to explore the distribution characteristics of tunnel blasting vibration response,the blasting vibration waveform induced by cutting blasting is predicted.Based on the equivalent spherical blasting source theory,a prediction method of surface blasting vibration waveform is introduced,and the influence of frequency is included in the prediction research of blasting vibration waveform for the first time.In addition,the symbolic expression of the surface blasting vibration waveform under the equivalent spherical blasting load is derived.On this basis,a concise blasting vibration waveform prediction function is constructed.The reliability of the prediction function is verified based on the on-site monitoring data of specific tunnel blasting.The results show that the theoretical waveform and the measured waveform show a good consistency in the overall trend of the blasting vibration curve.The corresponding particle peak velocity and vibration period of the two are basically the same.The comparison results verify the feasibility of the method introduced in this paper.

关 键 词：隧道爆破振动 等效球形药包 波形预测 理论推导 

分 类 号：TB9[一般工业技术—计量学] TD23[机械工程—测试计量技术及仪器]