A system and method for accurate monitoring and abnormal early warning of local ventilation parameters in coal mines

Abstract

The invention discloses a system and method for accurate monitoring and abnormal early warning of local ventilation parameters in coal mines. The system consists of an accurate monitoring and analysis module of air volume of a fan, a power consumption analysis module of a local ventilation system, an analysis module of air volume supply and demand matching, and a ventilation failure research and early warning module. composition. Accurate measurement of air volume The monitoring and analysis module includes various sensors and monitoring sub-stations. By optimizing the arrangement of air duct air volume measurement points and monitoring the kinetic energy calculation and verification of velocity pressure, accurate monitoring of local air volume is realized; the power consumption analysis module of the ventilation system includes local ventilation Resistance parameter monitoring and wind pressure loss model along the way realize visual monitoring of local resistance and early warning of abnormal resistance; air volume supply and demand matching analysis module predicts fan adjustment based on air volume data and advanced simulation of air volume supply and demand, and establishes a matching model of local ventilation air volume supply and demand; ventilation The fault research, judgment and early warning module extracts the characteristic samples and precursor information of the local ventilation fault state based on the monitored multivariate environmental parameters, and realizes the research, judgment and early warning of the development trend of the local ventilation state.

Description

technical field [0001] The invention relates to the field of safety assurance of local ventilation of a coal mine ventilation system, in particular to a system and method for precise monitoring and abnormal early warning of local ventilation parameters of a coal mine. Background technique [0002] A stable and reliable mine ventilation system is the guarantee of safe production in coal mines. A reasonable and reliable ventilation system can not only provide sufficient fresh air flow for the mine and save a lot of ventilation costs, but also improve the disaster resistance of the mine and reduce accidents. The ventilation system is the most important part of the "three defenses". In recent years, with the depth of mine mining and the development of coal mine mechanization, the excavation length has become longer and longer, and local ventilation has become the focus and difficulty of daily ventilation safety management. Manually collecting ventilation parameters and calculati...

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Problems solved by technology

[0002] A stable and reliable mine ventilation system is the guarantee of safe production in coal mines. A reasonable and reliable ventilation system can not only provide sufficient fresh air flow for the mine and save a lot of ventilation costs, but also improve the disaster resistance of the mine and reduce accidents. The ventilation system is the most important part of the "three defenses". In recent years, with the depth of mine mining and the development of coal mine mechanization, the excavation length has become longer and longer, and local ventilation has become the focus and difficulty of daily ventilation safety management. Manually collecting ventilation parameters and calculating the ventilation environment can no longer meet the needs of modern and intelligent mines. It is not only time-consuming and laborious, but also cannot quickly reflect the ventilation status of the tunneling roadway. The only source of fresh air flow. Currently, the ventilation parameters of the air duct in the mine are collected manually. There is no accurate and reliable monitoring method to reflect the ventilation status and abnormal warning.

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