some even build overpass under the ground, that is building underground interchange tunnels.

There is permeating airflow in underground ventilation system.

Waterproofing design and construction of underground passage of Zhongshan Road of Dalian City

Leak treatment for underground passage of railway station

The finite element method is used to analyze the influence produced under the transportation load about urban underground passage and compare with the measured data in site.

Application of Larssen steel sheet pile in Building the Underpass;

The article analyzes the urban pedestrian overpass or underpass from the aspects of the construction condition, investment control, maintenance management and traffic relieving, and puts forward the design thinks how to select the pedestrian passing and underpass of the vehicle and pedestrian grade separation.

Small duct advance grouting and grouting material, as well as the determination method of grouting parameters are described in detail with the underpass construction cas

In this article the changes of traffic forms due to the technology development, the direction of the city traffic development and the necessity of the exploitation of underground traffic are med.

In this paper, the combined development mode of underground traffic and urban green area is put forward by analyzing the urban green areas and urban traffic problems at present in China.