[an error occurred while processing this directive] ������� 2019, 38(1) 293-301 DOI:   10.3969/j.issn.1004-5589.2019.01.029  ISSN: 1004-5589 CN: 22-1111/P

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PubMed
Article by Zhang Q
Article by Zhang Y
Article by Yu Z
Article by Zhang T
Article by Zhang Y
Article by Luo Y
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ժҪ�� ѡȡ������˹���ij���͵�ú������ͨ��FLAC3D��ֵģ�⡢���Ʋ���ģ���Լ����ۼ��㣬��ú�㿪�ں��ϸ��Ҳ��ȶ��Խ���ģ���о���Ԥ����ֲɶ��µز㶯��ѧ����ʧ�ȼ���Χ����Ӧ���طֲ��Ĺ��ɼ�Ӱ�췶Χ���о����������FLAC3D�ܹ��Ϻõ�ģ��ú�㿪�ڸ��ϸ��Ҳ������Ӱ�죻ú�㿪�ں󣬲ɿ����Ϸ�����λ�Ƴ����м������С�����ƣ��ɿ�����Ӱ�췶Χ�Դ��ڿ��ɷ�Χ��
�ؼ����� ú�㿪��   ��ֵģ��   FLAC3D   ���Ʋ���ģ��  
Physical model and numerical simulation of overburden stability after coal mining
ZHANG Qian1, ZHANG Yan-jun1, YU Zi-wang1, ZHANG Tong1, ZHANG Yu1, LUO Yin-fei2,3,4
1. College of Construction Engineering, Jilin University, Changchun 130026, China;
2. Key Lab of Geo-environmental Qinghai Province, Xining 810007, China;
3. Environmental Geological Prospecting Bureau of Qinghai Province, Xining 810007, China;
4. Geological Environment Protection and Disaster Prevention Engineering Technology Research Center, Xining 810007, China
Abstract: Selecting a typical coal mining area in Ordos Basin, through FLAC3D numerical simulation, similar material simulation and theoretical calculation, the stability of overlying strata after coal seam excavation is simulated and studied, and the regularity and influence range of strata dynamics instability and stress redistribution of surrounding rock mass under various mining conditions are predicted. The results show that FLAC3D can well simulate the influence of coal seam excavation on overlying strata. After coal seam excavation, the vertical displacement over the goaf shows a trend of large in the middle and small on both sides, and the influence scope of the goaf is slightly larger than that of the mining area.
Keywords: coal seam excavation   numerical simulation   FLAC3D   similar material simulation  
�ո����� 2018-11-16 �޻����� 2018-12-27 ����淢������  
DOI: 10.3969/j.issn.1004-5589.2019.01.029
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