TY - JOUR
T1 - Análisis numérico de la irrupción de agua karst y un criterio para establecer el espesor de los pilares de roca resistentes al agua
AU - Zhao, Yanlin
AU - Luo, Shilin
AU - Wang, Yixian
AU - Wang, Weijun
AU - Zhang, Lianyang
AU - Wan, Wen
N1 - Funding Information:
Acknowledgements The authors thank the National Natural Science Foundation of China (Grants 51274097, 51434006, 51304057), the Natural Science Foundation of Hunan province (2015JJ2067), and the Open Projects of State Key Laboratory of Coal Resources and Safe Mining, CUMT (SKLCRSM16KF12) for their financial support.
Funding Information:
The authors thank the National Natural Science Foundation of China (Grants 51274097, 51434006, 51304057), the Natural Science Foundation of Hunan province (2015JJ2067), and the Open Projects of State Key Laboratory of Coal Resources and Safe Mining, CUMT (SKLCRSM16KF12) for their financial support.
Publisher Copyright:
© 2017, Springer-Verlag Berlin Heidelberg.
PY - 2017/11/1
Y1 - 2017/11/1
N2 - Water-bearing caves in the Maokou limestone have caused disastrous water inrushes in mines in southern China. A linkage analysis between the hydro-mechanical coupling and the strength reduction method was used to investigate the stability of water-resistant rock pillars. The factor of safety (FOS) of the pillar was established, and a criterion for establishing the required width of the pillar was proposed in engineering practice, i.e., the width of the pillar should be based on the blast hole depth and blast-disturbance depth, along with a FOS of 1.5. The permeability of the water-resistant pillar and the probability of water inrush both increase as the strength reduction factor increases because the effective width of the pillar narrows. A numerical analysis of the Qiyi coal mine “4·16” water inrush accident shows that the cause of the inrush was that the 3.0 m wide barrier left by roadway excavation was too narrow to withhold the karst water pressure of about 4.0 MPa.
AB - Water-bearing caves in the Maokou limestone have caused disastrous water inrushes in mines in southern China. A linkage analysis between the hydro-mechanical coupling and the strength reduction method was used to investigate the stability of water-resistant rock pillars. The factor of safety (FOS) of the pillar was established, and a criterion for establishing the required width of the pillar was proposed in engineering practice, i.e., the width of the pillar should be based on the blast hole depth and blast-disturbance depth, along with a FOS of 1.5. The permeability of the water-resistant pillar and the probability of water inrush both increase as the strength reduction factor increases because the effective width of the pillar narrows. A numerical analysis of the Qiyi coal mine “4·16” water inrush accident shows that the cause of the inrush was that the 3.0 m wide barrier left by roadway excavation was too narrow to withhold the karst water pressure of about 4.0 MPa.
KW - Factor of safety
KW - Hydro-mechanical coupling
KW - Mining engineering
KW - Strength reduction method
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U2 - 10.1007/s10230-017-0438-4
DO - 10.1007/s10230-017-0438-4
M3 - Article
AN - SCOPUS:85013821274
VL - 36
SP - 508
EP - 519
JO - Mine Water and the Environment
JF - Mine Water and the Environment
SN - 1025-9112
IS - 4
ER -