Abstract:
In order to solve the problem induced by dynamic mine strate pressure of fully- mechanized coal mining face under gob left by room and pillar mining in shallow depth seam, taking No. 31201 coal mining face of Shigetai Mine as a study object, the paper analyzed mechanism of the accident occurrence based on field ob servation, micro seismic monitor and forecast, mine pressure prediction. The results showed that the basic reason of dynamic mine strate pressure was stress concentr ation induced by overlying goaf and concentrated coal pillar affected by mining, based on the observation of mine pressure and micro seismic monitoring, the paper det ected oncentration of distribution range of coal pillar by drilling method and adopted concentrated blasting measures to achieve the objective of stage to release energy, dynamic pressure resolve, through the implementation of the measures to ensure the working face mine the above affected zone by concentrated coal pillar safety and avoid the occurrence of dynamic load of fully- mechanized coal mining face of mine pressure accident.