TY - JOUR A2 - Bai, Bing AU - Huang, Haibin AU - Li, Peng AU - Wang, Chuang AU - Yuan, Bingxiang AU - Chen, Minjie AU - Feng, Weimin PY - 2021 DA - 2021/12/29 TI - Research and Analysis on the Influence of Small Clear Distance Drilling and Blasting Method on the Existing Tunnel Structure SP - 4730936 VL - 2021 AB - In order to study the vibration influence of tunnel drilling and blasting method on the built tunnel with small clear distance, taking the intersection of Zhuhai Dahengqinshan No. 1 tunnel and Zhuji urban rail tunnel as the engineering background, we used ABAQUS finite element software to conduct numerical simulation analysis on the influence of different blasting loads on existing tunnels with small clear distance in Zhuji tunnel construction. The following conclusions were drawn: the blasting construction of the tunnel under construction had the greatest impact on the vault of the existing tunnel; when the peak load was reduced by half, the stress value, vertical displacement, and resultant velocity of Mises were also reduced by half, which indicates that reducing the peak value of blasting load appropriately can ensure the safety of tunnel construction. When the peak load is 2.7 MPa, the measured and simulated values were less than the resultant velocity limit required by the specification. In addition, the relative error between the measured value and the simulated value was less than 5%, indicating the accuracy of the numerical simulation. SN - 1687-8086 UR - https://doi.org/10.1155/2021/4730936 DO - 10.1155/2021/4730936 JF - Advances in Civil Engineering PB - Hindawi KW - ER -