Long-term real-time monitoring method and device for ventilation resistance of coal mine tunnel

Abstract

The invention discloses a coal mine tunnel ventilation resistance long-term real-time monitoring method and device, and the method comprises the steps: determining a monitoring point, selecting a tunnel with the same section specification as a monitoring object, and determining the positions of a measurement point I and a measurement point II in the tunnel; a differential pressure sensor, pitot tubes and a rubber tube are installed, the pitot tubes are installed at the measuring point I and the measuring point II in the roadway respectively, the differential pressure sensor is fixed within the range of 10 m in front of and behind the measuring point I, and the pitot tubes of the measuring point I and the measuring point II are connected through the rubber tube; monitoring data are read and uploaded in real time, a differential pressure sensor senses pressure difference through a pitot tube and a rubber tube, the pressure difference comprises static pressure difference and potential energy difference, the pressure difference is ventilation resistance between a measuring point I in a roadway and a measuring point II in the roadway, and the differential pressure sensor digitally displays a monitoring result underground and uploads the monitoring result to an upper computer. The method has the advantages that the problem of blockage caused by long-time continuous use of the pitot tube is solved, and long-term real-time monitoring of the tunnel ventilation resistance is realized.

Description

technical field [0001] The invention relates to the technical field of roadway ventilation resistance monitoring, in particular to a long-term real-time monitoring method and device for coal mine roadway ventilation resistance. Background technique [0002] The methods for measuring mine ventilation resistance are divided into differential pressure meter method and barometer method, and the barometer method is further divided into base point method and synchronous method. No matter which method is used, professional technicians are required to go to the coal mine to conduct on-the-spot measurement of the roadway. The measurement workload is huge, it takes a long time, and the efficiency is low. In addition, since the "Coal Mine Safety Regulations" stipulates that my country's coal mines must conduct a mine ventilation resistance measurement at least once every three years, and the actual measurement work is generally undertaken by units with relevant testing and inspection q...

AI Technical Summary

Problems solved by technology

[0006] For this reason, the present invention proposes a long-term real-time monitoring method and device for coal mine roadway ventilation resistance, which has the advantages of solving the problem of blockage of the pitot tube for long-term continuous use and realizing long-term real-time monitoring of roadway ventilation resistance

Images