浅埋偏压隧道掘进爆破地表振动效应研究  

Study on surface vibration effect of shallow-buried bias tunnel

作　　者：汪艮忠 胡宇[2] 周汉红 赵海涛 周珉 胡汪靖 张小军[2] 高文学[2] WANG Gen-zhong;HU Yu;ZHOU Han-hong;ZHAO Hai-tao;ZHOU Min;HU Wang-jing;ZHANG Xiao-jun;GAO Wen-xue(Zhejiang Lihua Blasting Engineering Co.,Ltd.,Lishui 323300,Zhejiang,China;Beijing University of Technology,Beijing 100124,China;The Security Administration of Wuhan Public Security Bureau,Wuhan 430077,China;BCEG Road and Bridge Construction Group Co.,Ltd.,Beijing 100123,China)

机构地区：[1]浙江利化爆破工程有限公司,浙江丽水323300 [2]北京工业大学,北京100124 [3]武汉市公安局治安管理局,武汉430077 [4]北京建工路桥集团有限公司,北京100123

出　　处：《工程爆破》2023年第6期147-152,166,共7页Engineering Blasting

基　　金：爆破工程湖北省重点试验室开放基金资助项目(BL2021-23)。

摘　　要：为研究浅埋偏压隧道掘进爆破地表振动效应,基于量纲分析,建立了浅埋偏压隧道掘进爆破地表振动计算模型,并以国道109新线高速公路齐家庄隧道为依托进行现场爆破振动监测试验,研究结果表明:先行洞掘进形成的空洞对后行洞爆破应力波在先行洞地表传播造成一定影响,其地表峰值振速随着爆心距的增大而减小;峰值振速衰减速率先增大后减小;峰值振速放大倍数最高达1.43倍。将所建立的计算模型与4种代表性的模型进行多元线性回归,计算结果表明:4种代表性模型相关系数在0.379~0.712之间,本文理论模型在空洞效应区、非空洞效应区的相关系数分别为0.794、0.865,吻合度较好,验证了该计算模型的正确性,表明本文模型可为类似施工工程的爆破振动控制提供指导意义。A calculation model for ground vibration induced by shallow-buried and inclined tunnels was established based on dimensional analysis to investigate the effects of tunnel excavation and blasting.The model was validated through on-site blasting vibration measurements at Qi jiazhuang Tunnel on National Highway 109.The results showed that the cavity formed by the excavation of the preceding tunnel had an impact on the propagation of blast stress waves on the ground surface during the blasting of the following tunnel.The peak ground velocity decreased as the distance from the blast center increased.The decay rate of the peak ground velocity initially increased and then decreased.The maximum amplification factor of the peak ground velocity was 1.43 times.Multiple linear regression was carried out between the proposed model and 4 representative models,with correlation coefficients ranging from 0.379 to 0.712.The correlation coefficients of the proposed model in the cavity-effect and non-cavity-effect zones were 0.794 and 0.865,respectively,indicating good agreement with the measured data and validating the accuracy of the proposed model,which indicated that the model proposed in this article can provide guidance for the control of blasting vibration in similar construction projects.

关 键 词：浅埋偏压双线隧道 量纲分析 爆破振动 空洞效应 计算模型 

分 类 号：TD235[矿业工程—矿井建设]