NUMERICAL MODEL OF THE INSTABILITY-FAILURE PROCESS OF THE COAL-BED FLOOR DUE TO CONFINED WATER INRUSH

YANG Tian-hong; TANG Chun-an; LIU Hong-yuan; ZHU Wan-cheng; FENG Qi-yan

Volume 9 Issue 3

Sep. 2003

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Article Navigation > Journal of Geomechanics > 2003 > 9(3): 281-288

FU Xue-hai, QIN Yong, LI Gui-zhong, et al., 2001. AN ANALYSIS ON THE PRINCIPAL CONTROL FACTOR OF COAL RESERVOIR PERMEABILITY iN CENTRAL AND SOUTHERN QINSHUI BASIN,SHANXI. Journal of Geomechanics, 7 (1): 45-52.

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YANG Tian-hong, TANG Chun-an, LIU Hong-yuan, et al., 2003. NUMERICAL MODEL OF THE INSTABILITY-FAILURE PROCESS OF THE COAL-BED FLOOR DUE TO CONFINED WATER INRUSH. Journal of Geomechanics, 9 (3): 281-288.

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NUMERICAL MODEL OF THE INSTABILITY-FAILURE PROCESS OF THE COAL-BED FLOOR DUE TO CONFINED WATER INRUSH

1. Northeastern University, Shenyang 110004, Liaoning, China;
2. China University of Mining Technology, Xuzhou 221008, Jiangsu, China

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Abstract

Abstract

In this paper the instability-failure process of floor due to confined water inrush is numerically simulated by using the Coupling System of Flow & Solid in Rock Failure Process Analysis(F-FRPA^2D) that has be en recently developed by CRISR,Northeastern University.In this numerical model the fluid pressure transmission during the rupture-failure process of material is achieved by the coupling and iteration of flow-damage of an element.According to the results of the simulation the instability-failure mechanism of floor associated with the confined aquifer is analyzed and the position where water inrush is liable to happen is predicted.The results are in the main consistent with t he phenomena at the site,which indicates that the F-RFPA^2D,as a newly developed numerical simulation code,can be used to study water inrush from the confin ed aquifer through the floor.
- water inrush from the floor,
- numerical simulation,
- insta bility-failure process,
- coupling of flow and stress

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NUMERICAL MODEL OF THE INSTABILITY-FAILURE PROCESS OF THE COAL-BED FLOOR DUE TO CONFINED WATER INRUSH

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NUMERICAL MODEL OF THE INSTABILITY-FAILURE PROCESS OF THE COAL-BED FLOOR DUE TO CONFINED WATER INRUSH

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