Prediction of mining face gas emission and gas volume fraction in mining face return air roadway based on ISSA-GM-BP

JIAO Beinan; SA Zhanyou; HAN Bingnan; LIU Jie; LU Shouqing; WANG Hao

doi:10.13347/j.cnki.mkaq.20240431

Safety in Coal Mines > 2024 > 55(9): 12-21. > DOI: 10.13347/j.cnki.mkaq.20240431

JIAO Beinan, SA Zhanyou, HAN Bingnan, et al. Prediction of mining face gas emission and gas volume fraction in mining face return air roadway based on ISSA-GM-BP[J]. Safety in Coal Mines, 2024, 55（9）: 12−21. DOI: 10.13347/j.cnki.mkaq.20240431

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Prediction of mining face gas emission and gas volume fraction in mining face return air roadway based on ISSA-GM-BP

School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266520, China

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Received Date: March 27, 2024
Revised Date: May 05, 2024

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Abstract

Coal mine gas accidents are highly destructive and have a wide range of hazards. Predicting the amount of gas emitted from the mining face and the volume fraction of gas in the return air roadway can provide important basis for formulating gas control measures and preventing gas accidents. To solve the problem of mining face gas emission and gas volume fraction in mining face return air being affected by multiple factors and difficult to accurately predict due to large data fluctuations, we introduce the sparrow search algorithm (SSA) based on grey prediction and BP neural network, and establish an ISSA-GM-BP model for predicting the mining face gas emission and gas volume fraction in mining face return air roadway. This model utilizes Chebyshev chaotic mapping, dynamic inertia weight, and Lévy flight strategy algorithm to improve SSA. In grey prediction, a dynamic grey GM (1,1, $\alpha$ ) model is established by introducing dynamic generation coefficients and combined with BP neural network. The combined model is then optimized by improving SSA. Use this model to predict the mining face gas emission and gas volume fraction in mining face return air roadway, and compare and analyze the prediction results with SSA-BP neural network and BP neural network. The results showed that in terms of mining face gas emission and gas volume fraction in mining face return air roadway, the average relative errors between the prediction results of the ISSA-GM-BP model and the measured values were 2.95% and 2.65%, respectively. The average relative errors of the SSA-BP neural network were 9.50% and 8.00%, respectively. The average relative errors of the BP neural network were 12.49% and 9.76%, respectively. The determination coefficients of the ISSA-GM-BP model were 0.960 9 and 0.958 7, respectively. The predicted values fully conform to the trend of actual mining face gas emission and gas volume fraction in mining face return air roadway, and have significant advantages in prediction accuracy and adaptability.
- mine safety,
- gas emission prediction,
- grey theory,
- BP neural network,
- sparrow search algorithm

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Prediction of mining face gas emission and gas volume fraction in mining face return air roadway based on ISSA-GM-BP