The dust in the highway tunnel has a wide range of particle size distribution with relatively complex complex kinds.It is realistic to study the removal of dust in the tunnel.In this paper

we use the electrostatic dust collection technology to evaluate the dust collection efficiency by simulating various working parameters under different conditions of the tunnel.Main body of the electrostatic precipitator is powered by a negative DC high voltage power supply.the electrode structure is the wide span-long thorn.The dust ash

cement powder and phosphorus magnesite powder dust are used as the highway tunnel dust.By changing

the supply voltage

wind speed

concentration of dust

dust particle size and dust resistivity

the dust removal efficiency is calculated separately under various conditions.The experimental results show that the highest collection efficiency can be obtained when the power supply voltage is 8.4 kV

wind speed is 4 m/s

dust concentration is 27.59 mg/m

3

dust particle size is 60.71 μm and dust resistivity is moderate.The wide span-long thorn electrostatic precipitator has ideal effect on the removal of dust in the tunnel.