E3S Web Conf.
Volume 53, 20182018 3rd International Conference on Advances in Energy and Environment Research (ICAEER 2018)
|Number of page(s)||5|
|Section||Environment Engineering, Environmental Safety and Detection|
|Published online||14 September 2018|
Numerical Simulation of Surrounding Rock Stress under Different Overlying Strata Combinations in Sijiazhuang Mine
State Key Laboratory of Gas Disaster Monitoring and Emergency Technology, Chongqing, 400037, China ;
2 Chongqing Research Institute of China Coal Technology Group, Chongqing, 400037, China
* Corresponding author: firstname.lastname@example.org
Sijiazhuang coal mine is taken as an example in this paper. Both the theoretic model and the numerical simulation are carried out to analyze the stress distribution regularity on the surrounding rock of stope face under different overlying strata combinations by using discrete element method. Under different combinations of the overlying strata, the results indicate that the regularity of stress distribution around stope face is roughly the same, i.e. the stress concentration of different degree appears in both ends, and the region of pressure relief exist above the stope face. Furthermore, destruction degree of the roof in stope face is different under various overlying strata combinations. On the eve of the first weighting, the different combinations present different phenomenon of concentration, especially the soft-hard-soft combination and hard-soft-hard combination.
© The Authors, published by EDP Sciences, 2018
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