The stray currents produced by running Metro vehicles affect the rail transit system and buried Metal structure by causing electrochemical corrosion,and so influence the lifetime and safety of the rail transit system and buried metal structure.

This paper analyses the hazards of subway stray current and describes the principles of stray current corrosion, raises a method for monitoring the stray current and describes the methods on how to design the monitoring and control system for subway stray current.

Anti-clogging design method for the labyrinth channels of drip irrigation emitters;

Considering the structural intricacy of the drip irrigation emitter with labyrinth channel,a numerical simulation was carried out for the liquid-solid two-phase flows in arc-type channel by the CFD program Fluent.

Aiming at the influence of labyrinth channel wall topography on the flow behavior and adhesion between particles and channel wall under the condition of silt-content irrigation,the emitter channels of different wall topography are chosen,and the hydraulic performance tests and the visual experiments on particle-wall adhesion are conducted via particle image velocimetry(PIV).

Experimental Study on Metro Stray Current Corrosion of Rebars in Reinforced Concrete and the Influence of Corrosion on Concrete Strength;

This paper discussed the mechanism of metro stray current corrosion of pipelines buried underground to design a test plant of simulating stray current corrosion.

The origin and mechanism of stray current corrosion in metro engineering and its protection is reviewed.

The subway dispersed current can corrode the main body reinforcing steel bars and other stal components of subway.

This paper introduces the measurement of subway dispersed current by means of analysing the relation between subway dispersed current and subway tfansitive resistance,and analyses the present condition of subway typical sections on the basis of the subway potential distribution measure.