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《Coal Science and Technology》 2018-05
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Surrounding rock broken zone evolution law of high-intensity mining affected roadway in shallow coal seam

ZHAO Bin;LIANG Ningning;WANG Fangtian;LIU Zhaoxiang;School of Mines,China University of Mining and Technology;State Key Laboratory of Coal Resources and Mine Safety,China University of Mining and Technology;Key Laboratory of Deep Coal Resource Mining,Ministry of Education of China,China University of Mining and Technology;State Key Laboratory of Groundwater Protection and Utilization by Coal Mining;Bulianta Coal Mine,Shendong Coal Group Co.,Ltd.;  
In order to study the broken rock zone evolution law of mining affected roadway in shallow coal seam and to ensure the safe operation of coal mine underground reservoir,a typical high-intensity fully-mechanized mining face of shallow coal seam in Bulianta Coal Mine was choosed as the project background,and the intergrated research methods include theoretical analysis,numerical simulation and field measurement were carried out to analyze the stress and deformation characteristics for the mining affected rectangular roadway. The results indicated that the broken rock zone was developing with convex type which mainly concentrated in both sides of the shallow highintensity mining roadway,and it was significantly affected by the side abutment pressure of goaf than the front abutment pressure of mining face,besides,the broken zone of pillar side was more serious than working face side in the roadway. The roadway was damaged worst at secondary recovery which impaction was combined with the mining and the recovery,and to ensure the long-term stability of the remaining coal pillars that the method of bolting and shotcreting with wire mesh was proposed. The research results provide a scientific basis for the safe operation of underground coal mine reservoir and the control of roadway surrounding rock with similar conditions.
【Fund】: 煤炭开采水资源保护与利用国家重点实验室2016年开放基金课题资助项目(SHJT-16-30.13);; 江苏省研究生科研与实践创新计划资助项目(SJCX17_0520)
【CateGory Index】: TD322
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