邻近建筑城市隧道爆破振动影响规律研究

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摘要：为探明火凤山隧道加宽段爆破开挖对邻近建筑和先行洞的影响，本文通过有限差分软件FLAC3D对火凤山隧道左线20m加宽段进行爆破模拟计算，研究了爆破振动在工程区的传播规律、爆破对小净距隧道影响以及爆破对地表建筑的影响。

关键词：道路工程；爆破振动；数值模拟；峰值振动速度；隧道

中图分类号：U455.6                                文献标识码：A                                   文章编号：1673‑6478（2023）04-0222-06

Study on Influence Law of Blasting Vibration of Urban Tunnel Adjacent to Building

YAN Wei FEI Hu YANG Qiaowei

（1. Sichuan Road & Bridge（Group）Co.， Ltd.， Highway Third Branch， Chengdu Sichuan 610200， China;2. Key Laboratory of Transportation Tunnel Engineering of Ministry of Education， Southwest Jiaotong University， Chengdu Sichuan 610031， China）

Abstract： In order to find out the influence of blasting excavation on the adjacent buildings and the first hole in the widening section of Huofengshan Tunnel， the finite difference software FLAC3D was used to simulate the blasting simulation of the 20m widening section of the left line of Huofengshan Tunnel. The propagation law of blasting vibration in the engineering area， the influence of blasting on the small spacing tunnel and the influence of blasting on the surface building were studied.

Key words： road engineering; blasting vibration; numerical simulation; peak particle velocity; tunnel

0 引言

随着西部山区公路交通建设的推进，隧道邻近既有建筑物的现象逐渐增多。（剩余4417字）