For lack of relevant studies on domestic short tunnel lighting,this paper studies and discusses the design parameters of short tunnel lighting.

Distribution characteristics and countermeasures of traffic accidents in expressway tunnel group;

The Tunnel Group Surveillant System of the Southern Part of Jingzhu Freeway in Guangdong Province;

First,the definition of tunnel group was established.

The layout of fire forces in freeway tunnel groups has become an important effect on efficiency of emergency rescue.

In order to improve the safety level of emergency parking strip between tunnels of two-lane highway tunnel groups,rear-end collision as well as collision process caused by the wrong location of emergency parking strip affected by tunnel white hole effect and black hole effect are analyzed.

In underground engineering of city, the constructions of the tunnel will inevitably produce the land subsidence,the building asymmetry decline and other negative influence to the enviroment,this kind of phenomenon is especially outstanding while constructing mutative and large transect multi-tunnel system of urban metro.

In underground engineering of city,the constructions of the tunnel will inevitably produce the land subsidence,the building asymmetry decline and other negative influence to the enviroment,the phenomenon is especially outstanding while constructing mutative and large transect multi-tunnel system of urban metro.

Because there is a small clear distance of Jinji mountain group tunnels being designed,how to optimize the construction sequence is an important issue,the construction sequence of small clear distance group tunnels in Ⅴ grade rock mass is studied by a numerical method.