Journal cover Journal topic
Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/nhess-2015-322
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
04 Feb 2016
Review status
This discussion paper has been under review for the journal Natural Hazards and Earth System Sciences (NHESS). A final paper in NHESS is not foreseen.
A Continuous Dynamic Prediction Model of Gas Pressure Based on Gas Emission at Excavation Face and its Engineering Application
Chen Liang1,2 and Wang Enyuan1,2 1Key Laboratory of Coal Methane and Fire Control, Ministry of Education, China University of Mining and Technology, 221116 Xuzhou, Jiangsu, China
2School of Safety Engineering, China University of Mining and Technology, 221116 Xuzhou, Jiangsu, China
Abstract. Gas pressure is one of the necessary conditions for the occurrence of coal and gas outburst. Realization of continuous and dynamic gas pressure forecasting is of significance for prevention and control of coal and gas outburst. In this work, we established a gas pressure prediction model based on the source of gas emission with considering fluid-solid coupling process. The verified results showed that the predicted gas pressure was roughly consistent with the actual situation, indicating that the prediction model is correct. And it could meet the need of engineering projects. Coal and gas outburst dynamic phenomenon is successfully predicted in engineering application with the model. Overall, prediction coal and gas outburst with the gas pressure model can achieve the continuous and dynamic effect. It can overcome both the static and sampling shortcomings of traditional methods, and solve the difficulty of coal and gas outburst prediction at the excavation face. With its broad applicability and potential prospect, we believe the model is of great importance for improving prevention and control of gas disasters.

Citation: Liang, C. and Enyuan, W.: A Continuous Dynamic Prediction Model of Gas Pressure Based on Gas Emission at Excavation Face and its Engineering Application, Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2015-322, 2016.
Chen Liang and Wang Enyuan
Interactive discussionStatus: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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RC1: 'nhess-2015-322', Anonymous Referee #1, 14 Mar 2016 Printer-friendly Version 
 
AC1: 'Author Comment', Wang Enyuan, 12 Apr 2016 Printer-friendly Version 
Chen Liang and Wang Enyuan
Chen Liang and Wang Enyuan

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Short summary
we established a gas pressure prediction model, and verified it using numerical simulation and applied it into engineering. The results showed that the predicted gas pressure was roughly consistent with the actual situation, indicating that the prediction model had a higher accuracy, and could meet the need of engineering projects. Engineering application of the model successfully predicted coal and gas dynamic phenomena at the excavation face.
we established a gas pressure prediction model, and verified it using numerical simulation and...
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