Long-term stability of a new EFPI stress monitoring sonde installed in a brown coal mine in Poland

2006 ◽  
Author(s):  
Rainer Gloetzl ◽  
J. Krywult ◽  
J. Schneider-Gloetzl ◽  
M. Dynowska
Keyword(s):  
Brown Coal ◽  
Coal Mine ◽  
Stress Monitoring ◽  
Term Stability ◽  
Long Term Stability

A Research of Reinforcing Ingate in Shale-Laminated Sandstone

2011 ◽  
Vol 243-249 ◽  
pp. 2095-2099
Author(s):  
Wei Guo Qiao ◽  
Yan Xin Lv ◽  
Lie Chang Wei
Keyword(s):  
Rock Mass ◽  
Bearing Capacity ◽  
Coal Mine ◽  
Surrounding Rock ◽  
Term Stability ◽  
Long Term Stability ◽  
Deformation Test ◽  
At Home

The auxiliary shaft ingate of Pengzhuang Coal Mine deformed greatly with large roof fallings. Through the analysis of destruction, the ingate reinforcement schema is put up according to the engineering consolidation experience and the advanced consolidation experience at home and abroad. On the completion of the ingate project, the surrounding rock mass is stable without apparent deformation. The two-side and roof deformations are 4mm and 5mm respectively according to the convergence deformation test, improving the integrity and bearing capacity of the shaft and pipelines effectively. Thus the deformation of the surrounding rock mass is under control, guaranteeing the long-term stability of the roadway.

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