Attenuation of blast-induced vibration on tunnel structures  

作　　者：Xiao Wang Xiaofeng Hou Wei Yuan Changdi He Vahab Sarfarazi Hao Fan 

机构地区：[1]College of Energy and Mining Engineering,Shandong University of Science and Technology,Qingdao 266590,China [2]State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine,Anhui University of Science and Technology,Huainan,Anhui 232001,China [3]College of Safety and Environmental Engineering,Shandong University of Science and Technology,Qingdao 266590,China [4]School of Civil Engineering,Southeast University,Nanjing,211189,China [5]Department of Mining Engineering,University of Utah,Salt Lake City,UT,84112,USA [6]Department of Mining Engineering,Hamedan University of Technology,Hamedan,Iran

出　　处：《Geohazard Mechanics》2024年第3期153-163,共11页岩土灾变力学（英文）

基　　金：supported by the General Project of China Postdoctoral Science Foundation(2023M742141);the Open Fund of State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine(SKLMRDPC23KF06);the Talent Introduction Project of Shandong University of Science and Technology(0104060540171).

摘　　要：The blast-induced vibration during excavation by drilling and blasting method has an important impact on thesurrounding structures. In particular, with the development of tunnel engineering, the impact of blasting vibrationon tunnel construction has attracted extensive attention. In this paper, the propagation attenuation characteristicsof blast-induced vibration (PPV, peak particle velocity) on different tunnel structures were systematically studiedbased on the field monitoring data. Initially, the attenuation characteristics of blasting vibration PPV on the lowerbench surface, the side wall of the excavated tunnel and the closely spaced adjacent tunnel were investigated.Subsequently, the capacity of several widely utilized empirical prediction equations to estimate the PPV on tunnelstructures was examined, along with a comparative analysis of their prediction accuracy. The research findingsindicate that it is feasible to predict the PPV on the tunnel structures using empirical equations. The attenuationcharacteristics of blasting vibration PPV are different in different structures and directions. The prediction accuracy of the empirical equations varies, while the discrepancies are minimal. The principal variation amongthese equations lies in the site-specific coefficients k, β, λ, highlighting the differential impact of structural anddirectional considerations on the predictive efficacy. Based on the empirical equation and safe PPV provided bythe blasting vibration safe standards on tunnels of China (GB6722-2014), and considering the influence of allstructures and directions, it is determined that the safe distance of blasting vibration in the tested tunnel projectshould be larger than 20.28–18.31 m, 18.31–16.16 m, and 16.16–13.75 m for blasting vibration frequency locatedin 10 Hz, 10–50 Hz, and >50 Hz.

关 键 词：Blast-induced vibration Tunnel structures PPV Empirical equations Prediction accuracy Safe distance 

分 类 号：U455.6[建筑科学—桥梁与隧道工程]