The gas of vehicle emissions contains large amounts of harmful gases. To sustain the quality of the air in tunnel, we need ventilation, which is a systematic project. We should take into account not only construction costs For ventilation planning, but also should consider the development of future maintenance and management of the transport costs and the corresponding need for phased construction. This article discusses various aspects of ventilation and ventilation calculation method of choice, which provide the base for ventilation design of highway tunnel.
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