Abstract: In order to enhance the signal communication ability of the information collecting and closing system in Duerping Coal Mine and improve the monitoring and monitoring ability of the information collecting and closing system for locomotive operation in the main roadway of mine transportation,the information collecting and closing system in Duerping Coal Mine has been upgraded and reformed.By installing an intelligent communicator at the entrance of the south roadway,the north one stone roadway and the north two roadways of the underground transportation roadway,respectively,the information collecting and closing system in the direction of the south roadway,the north one stone roadway and the north two roadways can be operated separately.At the same time,the cable signal transmission between underground intelligent communicator and ground dispatch is changed to optical cable signal transmission,and the cable signal transmission between communicator and local control substation is also changed from the original cable signal transmission to optical cable signal transmission.The optical cable signal transmission distance is long and the loss is small,which is more conducive to the flexible,fast and accurate transmission of signal for downstream equipment,and more conducive to improving the stability of the signal collection and closure system.After the system upgrade and transformation,the communication capacity of the system is improved,the signal transmission efficiency of the system is improved,the stability of the system operation is enhanced,and the monitoring and monitoring ability and dispatching command ability of the system for the locomotive operation in the transportation roadway are enhanced.

Key words: Mine transportation, Information collecting and closing system, Upgrading and transformation