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Abstract Based on the gob-side entry retaining reparation engineering of first coal mining face in Zhuji mine around 900 m underground，deformation，stress and structure state of roadway surrounding rock before reparation were analyzed by field measurement and theoretical method；the conception of“critical structure between instability and stability”of gob-side entry retaining reparation was proposed；reasonable repairing time and construction process were determined；initiative-passive collaborative supporting system was concluded. Research result was applied to the gob-side entry retaining reparation engineering in Zhuji mine successfully. The results of ground pressure monitoring show that the deformation of this repaired roadway is controlled effectively；and all indices satisfy the requirements of next mining face.
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Received: 05 May 2013
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2014, Vol. 33 
