Abstract
Coal and gas outbursts took place about thirty times at one coal mine in China, which not only caused safety problems but also hindered the regular production in different degree. In-situ geo-stresses of two points are successfully measured near coal and gas outburst locations, and the measured maximum principal stress is approximately at the horizontal direction, while the minimum principal stress is at the vertical direction. A three-dimensional model is built with FEM software of ANSYS, the measured geo-stress are taken as boundary pressures to be applied on the FEM model, and the geo-stress fields in the coal seam are calculated. In the end, the qualitative influence of the maximum principal geo-stress on coal and gas outburst is analyzed based on the relationship between geo-stress and number of coal and gas outburst.
Similar content being viewed by others
References
Alexeeva AD, Revva VN, Alyshev NA (2004) True triaxial loading apparatus and its application to coal outburst prediction. Int J Coal Geol 58(4):245–250
Beamish BB, Crosdale PJ (1998) Instantaneous outbursts in underground coal mines: an overview and association with coal type. Int J Coal Geol 35(1):27–35
Wang LJ, Pan LZ, Liao CT et al (1991) Geostress measurement and its application in engineering (in Chinese). Beijing: Geological Publishing House
Cao YX, He DD, Glick DC (2001) Coal and gas outbursts in footwalls of reverse faults. Int J Coal Geol 48(1):47–63
Lavrov A (2003) The Kaiser effect in rocks: principles and stress estimation techniques. Int J Rock Mech Min Sci 40:151–171
Litwiniszyn J (1985) A model for the initiation of coal–gas outbursts. Int J Rock Mech Min Sci Geomech Abstr 22(1):39–46
Ljunggrena C, Chang Y, Janson T et al (2003) An overview of rock stress measurement methods. Int J Rock Mech Min Sci 40:975–989
Shepherd J, Rixon LK, Griffiths L (1981) Outbursts and geological structures in coal mines: a review. Int J Rock Mech Min Sci Geomech Abstr 18(4):267–283
Wold M, Connell L, Choi S (2008) The role of spatial variability in coal seam parameters on gas outburst behaviour during coal mining. Int J Coal Geol 75:1–14
Xu T, Tang CA, Yang TH (2006) Numerical investigation of coal and gas outbursts in underground collieries. Int J Rock Mech Min Sci 43(6):905–919
Xue S, Wang Y, Xie J et al (2011) A coupled approach to simulate initiation of outbursts of coal and gas—model development. Int J Coal Geol 86:222–230
Yao Y, Liu D, Tang D et al (2009) Preliminary evaluation of the coalbed methane production potential and its geological controls in the Weibei Coalfield, Southeastern Ordos Basin, China. Int J Coal Geol 78:1–15
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Xu, P. Geo-stress Fields Simulated with 3D FEM and Their Qualitative Influence on Coal and Gas Outburst. Geotech Geol Eng 32, 337–344 (2014). https://doi.org/10.1007/s10706-013-9717-4
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10706-013-9717-4