Research purposes:In order to resolve the low headroom tunnel construction problem in the electrical high speed ballastless track,this paper introduces and discusses the turret tunnel low headroom suspension planning of experimental section of SunYu ballastless track.

In order to resolve the low headroom tunnel construction problem in the electrical high-speed ballastless track,by introducing and discussing the contact suspension in low headroom tunnel of the experimental section of SunYu ballastless track,this paper used the method of selection optimization comparison and selection,and put forward some reliable and feasible schemes for similar constructions.

Research purposes:In order to resolve the low headroom tunnel construction problem in the electrical high speed ballastless track,this paper introduces and discusses the turret tunnel low headroom suspension planning of experimental section of SunYu ballastless track.

This article systematically investigated the dependence of tunnel cross-section areas on vehicle sealing characters.

The application method and feasibility of the pollutedair purifier in highway tunnel are investigated by taking a long highway tunnel as example and the economic and environmental benefits are analyzed.

Based on direct numerical simulation(DNS),this paper,by combining numerical calculation and experimental measurement,makes a detailed study on the relationship between the arrangements of working bentch and the polluted boundaries under one-side layout laminar hood in clean tunnel.