To monitor the gas strength with whole orientation,real time and unmanned,and reduce the hidden safe trouble,a gas monitor and voice communication Integrated Services Digital Network(ISDN) was designed by using wireless sensor network and wireless communication and voice on IP technology.

Considering of the practical situation and the problem of the coal mine monitor system, after detailed investigation and in-depth theory study, the paper introduces a new kind of Gas monitor system, which is based on the Data Fusion method and the Virtual Instrument technology.

Gas monitoring has always been a key element in the security of coal mines.

Multipl-layer gas monitoring network system with computer;

PPR based similarity search for gas monitoring data;

Coalmine working face moving gas monitoring based on ZigBee;

By the analysis to current several coal mine gas accidents,the problems and shortage are pointed out in the gas management of coal mines at present.

Taking double roadway excavation of 80309 return air roadway and 80310 inlet gallery of Yinying Coal Mine of Yangquan city,Shanxi province,as the cases,this paper introduces the general situation of the working face and the details of gas managementon on the inclined-high-exploration wall retreating and cross pitch mining.

Research on Key Technology of Gas Management;