鄰近建筑城市隧道爆破振動(dòng)影響規(guī)律研究

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摘要：為探明火鳳山隧道加寬段爆破開挖對(duì)鄰近建筑和先行洞的影響，本文通過有限差分軟件FLAC3D對(duì)火鳳山隧道左線20m加寬段進(jìn)行爆破模擬計(jì)算，研究了爆破振動(dòng)在工程區(qū)的傳播規(guī)律、爆破對(duì)小凈距隧道影響以及爆破對(duì)地表建筑的影響。

關(guān)鍵詞：道路工程；爆破振動(dòng)；數(shù)值模擬；峰值振動(dòng)速度；隧道

中圖分類號(hào)：U455.6                                文獻(xiàn)標(biāo)識(shí)碼：A                                   文章編號(hào)：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

隨著西部山區(qū)公路交通建設(shè)的推進(jìn)，隧道鄰近既有建筑物的現(xiàn)象逐漸增多。（剩余4417字）