A Continuous Dynamic Prediction Model of Gas Pressure Based on Gas Emission at Excavation Face and its Engineering Application
Chen Liang1,2 and Wang Enyuan1,21Key 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
Received: 22 Nov 2015 – Accepted for review: 01 Feb 2016 – Discussion started: 04 Feb 2016
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.
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., doi:10.5194/nhess-2015-322, 2016.