Fire monitoring and early warning device for mine goaf

Abstract

The invention discloses a fire monitoring pre-warning device for a mine worked-out area. The mine worked-out area has strong fire concealment, and secondary disasters of gas explosion and dust explosion are triggered easily and cause a large number of casualties; and an existing fire alarm system of the worked-out area has a long delay time and generates misstatements and missing reports easily. The device mainly comprises a laser transmitter, a laser receiver, a control processing unit, a temperature monitoring unit, a display unit, a communication interface and an alarm unit; the device can perform remote sensing monitoring on characteristics of gas concentration, temperature and the like in an environment of a monitored area, and sends out a fire alarm by virtue of comprehensive monitoring data analysis. The device can accurately monitor fire characteristic gases in the worked-out area, thereby greatly improving the alarm accuracy, and providing an important guarantee for safety production of a coal mine.

Description

technical field [0001] The invention relates to a mine goaf fire monitoring and early warning device, and the system relates to the fields of sensor technology, laser technology, spectral analysis technology, signal processing technology and the like. Background technique [0002] Coal is the main energy in my country, accounting for about 70% of the primary energy. The coal industry is a high-risk industry, and accidents such as gas, fire, roof, and coal dust have plagued coal mine safety production. Fires in coal mines include goaf fires and roadway fires. Goaf fires are difficult to be discovered because of their strong concealment, and are likely to cause secondary disasters such as gas explosions and dust explosions, causing a large number of casualties. Therefore, it is of great significance to detect and extinguish fires in time at the initial stage of goaf fires. The vast majority of gob fires in coal mines occur in hidden places, and it is difficult to find out th...

AI Technical Summary

Problems solved by technology

The vast majority of gob fires in coal mines occur in hidden places, and it is difficult to accurately and quickly find out the location and scope of hidden fire sources with traditional instrumentation detection technology

At present, the fire monitoring methods in gobs mainly adopt gas monitoring and temperature monitoring. Gas monitoring is to extract sample gas to the ground through the bundle tube system to analyze the marked gas. Due to the long path of gas extraction, gas leakage and pipe blockage are prone to occur. , and the time delay of this method is long, it is easy to miss the best time for fire extinguishing and escape. In addition, this monitoring method cannot accurately locate the fire source, which brings inconvenience to disaster relief.

At present, the optical fiber distribution temperature monitoring method has also been applied, but the optical fiber has problems such as easy damage, complicated installation, and difficult maintenance.

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