Method for accurately and efficiently measuring external air leakage rate of deep coal mine
Through gas sampling and gas chromatography analysis, the external air leakage rate of the mine was calculated, which solved the problem of large measurement errors in high wind speed and high humidity environments in the prior art and the inability to measure the air leakage volume after the wind tunnel, and achieved high-precision and operable air leakage rate measurement.
CN119714728APending Publication Date: 2025-03-28SHANDONG XINJULONG ENERGY
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Patent Information
- Application Number
- CN202510032473.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-03-28
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Figure CN119714728A_ABST
Abstract
The invention belongs to the technical field of mine ventilation and safety, and particularly relates to an accurate and efficient method for measuring the external air leakage rate of a deep coal mine. The method mainly comprises the steps that mark gas is determined, gas sampling is carried out, gas analysis is carried out, and the mine external air leakage rate is calculated after formula derivation. The method is more practical and reasonable in measurement of the external air leakage rate of the deep coal mine, data errors and operation limitation caused by direct measurement of the total air return quantity at the bottom of the air return shaft and the air return quantity of the fan drift of the air return shaft in a traditional method are avoided, operability is high, and the method has important guiding significance in development of measurement work of the external air leakage rate of the deep coal mine.
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