Abstract：Research purposes: The gas concentration in tunnel shall never 6e more than 0. 5% in anytime and anywhere during the operation, so it is necessary to do the researches on it on the basis of the requirements for the purpose of making perfect design of operation ventilation monitoring system for gas tunnel.
Research methods: Based on the design of KJ4 gas monitoring and alarm system for Zhuqing Tunnel and combining with the practical situation of the gas tunnel, the further analyses are made for the software technologies used in current monitoring system and the main problems to be solved in design of the monitoring system are made clear.
Research results: This monitoring system adopts ventilation control model based on Non-steady Flow Theory , neural network control algorithm and other advanced technologies , so the integration and reliability of the system are enhanced with easy installation, maintenance and operation and the costs of construction, maintenance and operation can be lowered.
Research conclusions: The ventilation control problem of the gas tunnel has been solved basically by applying the following softwares and technologies in the design of the gas tunnel operation ventilation monitoring system, including the computer software for fan control room, the network technology of monitoring system, the application software for local cubicle, FSK technology of data communication and switching in technology of gas monitoring sensor.
2007, Vol. 24 
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