首页|Numerical analysis of stability for mined-out area in multi-field coupling

Numerical analysis of stability for mined-out area in multi-field coupling

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There were differences between real boundary and blast hole controlling boundary of irregular mined-out area in underground metal mines. There were errors in numerical analysis of stability for goaf, if it was analyzed as regular 3D mined-out area and the influence of coupling stress?seepage?disturbance was not considered adequately. Taking a lead zinc mine as the background, the model was built by the coupling of Surpac and Midas-Gts based on the goaf model precisely measured by CMS. According to seepage stress fundamental equations based on the equivalent continuum mechanical and the theory about equivalent load of dynamic disturbance in deep-hole blasting, the stability of mined-out area under multi-field coupling of stress?seepage?dynamic disturbance was numerically analyzed. The results show that it is more consistent between the numerical analysis model based on the real model of irregular 3D shape goaf and the real situation, which could faithfully reappear the change rule of stress–strain about the surrounding rock under synthetic action of blasting dynamic loading and the seepage pressure. The mined-out area multi-field coupling formed by blasting excavation is stable. Based on combination of the advantages of the CMS, Surpac and Midas-Gts, and fully consideration of the effects of multi-field coupling, the accurate and effective way could be provided for numerical analysis of stability for mined-out area.

mined-out area measured actuallymulti-field couplingstress-seepage-disturbancestability for mined-out area

罗周全、谢承煜、周吉明、贾楠、刘晓明、徐海

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National “Twelfth Five” Science and Technology Support Program, China ProjectNational Natural Science Foundation of China ProjectFundamental Research Funds for the Central Universities, China ProjectResearch Fund of the State Key Laboratory of Coal Resources and Mine safety, CUMT, China ProjectChina Postdoctoral Science Foundation Project

2012BAK09B02-05512742502013zzts05711KF022012M511417

2015

10.1007/s11771-015-2569-8

中南大学学报(英文版)
中南大学

中南大学学报(英文版)

CSCDSCIEI
影响因子：0.47
ISSN：2095-2899
年,卷(期)：2015.(2)
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