电力隧道浅埋暗挖下穿城市道路可行性研究

摘要

When power tunnels constructed in cities need cross urban roads, in order to minimize influences on traffic,shallow -buried excavation is usually chosen.While guaranteeing road passage, stability of power tunnels during construction and most dangerous links in construction shall be focused. With some power tunnel underpass highways as project background,this paper establishes a finite element computing model by means of FLAC3 D,and studies stability of power tunnels during passage of vehicles by means of 2 loading modes,i.e."load on vehicles"and "load on lanes".The results of research show that power tunnels underpass highways by means of shallow-buried excavation are feasible.In addition, the paper proposes several feasible recommendations for site construction of tunnels underpass urban roads.%在城市中修建电力隧道需穿越城市道路时,为了最小程度减少对交通的影响,往往选择浅埋暗挖方式进行开挖.在保证道路通行的同时,电力隧道在施工过程中的稳定性以及施工最危险的环节需要重点关注.以某电力隧道下穿公路作为工程背景,采用FLAC3 D建立有限元计算模型,以"车辆荷载""车道荷载"2 种加载方式,研究车辆通行时电力隧道的稳定性.研究结果表明:电力隧道采用浅埋暗挖法下穿公路是可行的.此外,还针对隧道穿越城市道路现场施工提出若干可行建议.