Coal mine underground roadway air pressure difference synchronous rapid determination method

Abstract

The invention provides a coal mine underground roadway air pressure difference synchronous rapid determination method, which comprises the following steps: selecting a roadway air pressure measurementroute and measurement points according to a coal mine underground ventilation system, and numbering all measurement points; selecting two barometers; first measuring personnel carrying the first barometer to go to a measuring point i, and second measuring personnel carrying the second barometer to go to a measuring point i+1 from the measuring point i; measuring the air pressure value of the points after the first measuring personnel and the second measuring personnel reach the appointed measuring points; repeating the measurement until the measurement of all the measurement points is completed; and exporting measurement data of the first barometer and the second barometer, screening and marking data, and calculating to obtain an air pressure difference deltaP of adjacent measurement points in the roadway. Communication is carried out in a manner that measuring personnel drag the string, synchronous measurement of the air pressure difference of the underground roadway of the coal mineis realized, and the method has the beneficial effects of low input cost, simplicity and convenience in operation, high measuring speed and accurate measured data.

Description

technical field [0001] The invention relates to the field of underground safety in coal mines, in particular to a method for synchronously and quickly measuring air pressure differences in underground roadways of coal mines. Background technique [0002] Roadway air pressure difference is one of the important parameters of coal mine underground ventilation resistance. Mine ventilation resistance is an important parameter reflecting the difficulty of mine ventilation. Accurate measurement of coal mine underground ventilation resistance is one of the important contents of coal mine safety technology management. Therefore, roadway air pressure The difference has an important impact on coal mine safety production and economic benefits; the existing ventilation resistance measurement methods mainly use three methods: inclined differential pressure meter method, barometer base point method and air pressure synchronization method to measure the pressure difference of underground roa...

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Problems solved by technology

[0002] Roadway air pressure difference is one of the important parameters of coal mine ventilation resistance. Mine ventilation resistance is an important parameter reflecting the difficulty of mine ventilation. Accurate measurement of coal mine ventilation resistance is one of the important contents of coal mine safety technology management. Therefore, roadway air pressure The difference has an important impact on coal mine safety production and economic benefits; the existing ventilation resistance measurement methods mainly use three methods: inclined differential pressure gauge method, barometer base point method and air pressure synchronization method to measure the pressure difference of underground roadway. Each has its own advantages and disadvantages. The inclined differential pressure meter method has higher measurement accuracy, but it needs to lay a large number of rubber tubes frequently in the measurement roadway, which makes the measurement work intensive and takes a long time; the barometer base point method has low work intensity and fast measurement speed. The method is widely used at present, but due to the change of surface atmospheric pressure and the asynchrony of downhole measurement, the measurement result error of this method is large; Its measurement is accurate, but due to the inconvenience of downhole communication, it is extremely difficult to achieve synchronous measurement

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