In order to realize the application of the underground wireless monitoring network, in view of the characteristics of the underground wireless monitoring, a kind of multi jump wireless routing protocol based address priority and star-bus topology is designed in this paper. After the analysis of the mine wireless transmission process model and data broadcast problem, considering the technologies of direction control, second localization, the anti-interference, network survival period and so, a method of adding the protocol address and the uplink and downlink flag is proproesd to solve these probles above. Simulation results show that, this protocol can be successfully completed the wireless datatransmission in the underground laneway environment.

In order to make up the deficiencies in the goaf coal spontaneous combustion monitoring of mine safety monitoring system. Provide the most direct and effective data for the early identification and prediction of the goaf coal spontaneous combustion fire. The NRF905 Radio frequency (RF) communication technology had been adopted to design the goaf coal spontaneous combustion monitoring system, which accompany by SCM, sensors, Clock circuit and CAN bus communication technology. The paper given the overall design of the system, and key technologies of system had been made research and implementation. Experimental tests showed that the device layout simple, networking fast, the effective data of each node position could have been made real-time collection.

Freeze roadway cooling technology is delivering cold quantity to cooling underground face by storage cooling energy in strata, and the effect of storaging cold is critical. The geographical position and geological condition of coal mine in Heilongjiang Province has remarkable characteristics. The feasibility of freeze roadway cooling measure was demonstrated on temperature, geothermal, constant temperature strata and frozen soil layer, etc. by analyzed its advantage adequately. The measure provides a new idea which suits the native situation for prevent the heat-harm in coal mine, it also has the realistic reference value and is worth popularizing.