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Mine gas concentration pre-warning method

A gas concentration, mine technology, applied in special data processing applications, instruments, electrical digital data processing, etc.

Inactive Publication Date: 2017-01-04
XIAN UNIV OF SCI & TECH
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Problems solved by technology

[0003] At present, there are no actual research results to invert and analyze the impact of production factors on gas emission by means of gas monitoring data processing. However, the application research of big data processing and safety early warning based on real-time monitoring data of safety monitoring and monitoring system must ensure its calculation accuracy The rationality of safety analysis must consider the influence of production factors. In view of this, a method for analyzing the impact of production factors on gas gushing is studied.

Method used

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  • Mine gas concentration pre-warning method
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  • Mine gas concentration pre-warning method

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Embodiment

[0048] see figure 2 As shown, the 2015 monitoring data of the mining working face monitoring point of a mine in Shaanxi was selected as historical data to analyze the impact of production on gas emission at the working face. The monitoring period is 30s. Using the above method, set the critical value ε to 0.01. Through repeated calculations, it is found that the sample reconstruction dimension is preferably between 4 and 12, and the probability histogram of the sample mean difference of the gas monitoring data sequence is shown in figure 2 As shown, it is calculated that the production of the working face has an impact on gas emission of 3.2 hours, and the range of gas concentration increment under the influence of production factors is [0.12,0.32]. 0.62m 3 / s, the upper and lower limits of the confidence interval are multiplied by the air volume of the working face respectively to be [0.34,0.90], and the prediction results of different sources are included in the confidenc...

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Abstract

The invention discloses a mine gas concentration pre-warning method. The method includes: converting monitoring data of different shifts into a gas flow data sequence set Q; reconstructing each sequence in Q according to a set sample dimension m, reconstructing the monitoring data of each day to form n samples, determining the duration t of production influence, and using t as the separation point to calculate monitoring data sample average difference around a time point t' in an overhaul shift, calculating the average value mu and standard deviation sigma of an average difference sequence C in historical monitoring data, and determining the confidence interval of the influence of production factors on gas concentration under a certain confidence level to perform gas concentration pre-warning. The mine gas concentration pre-warning method has the advantages that gas monitoring data is decomposed into different time periods and time sequences according to a site production alternation system, sequence sample distance is introduced on the basis of statistical analysis, the influence of the production factors on gas discharge is presented quantitatively, the influence on the gas concentration is quantitatively presented by the confidence interval, and influence of the production factors on the gas discharge of a stope face can be analyzed effectively.

Description

【Technical field】 [0001] The invention belongs to the technical field of coal mine safety monitoring and monitoring, and in particular relates to a mine gas concentration early warning method, big data processing and safety early warning application based on real-time data of a safety monitoring and monitoring system. 【Background technique】 [0002] Gas disaster is one of the most harmful disasters to mine production, which seriously threatens the safe production of coal mines. Mine gas monitoring is an important means of preventing gas disasters. Mine gas monitoring can not only provide real-time data for gas concentration control, but also can communicate through the network A large amount of gas monitoring data is transmitted to the monitoring host, thus laying the foundation for the big data processing and safety early warning application research based on the real-time monitoring data (measured data) of the safety monitoring and monitoring system. Practical significance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 董丁稳
Owner XIAN UNIV OF SCI & TECH
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