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STABILITY CHECKING ANALYSIS OF RAILWAY TRANSPOR OF PASSENGERS TRAVERSING GOAF AREA

Chen Fuen1 Chen Qingfeng1 Wang Kai1 He Fangjun1 Li Jianfeng1 Zhanghai2 Yang Wanxi2 1.Liaoning Chemical Industrial Geological Prospecting Institute,Jinzhou,Liaoning,121000,China 2.Yingkou Planning Institute of Land and Resource Survey,Yingkou,Liaoning,115000,China  
We had carried out the quantification appraisement on the safe distance between railway line and chief goaf area according to the Mining Regulations of buildings,water body,railway and some chief protecting coal pillar and coal mining as well as some relative thechnical regulations,at the same time,some theoretical quantification appraisement on shallow buried mined-out balance arch had been finished according to the stability of small pit goaf.Both results of the quantification appraisement could ensure the safety distance between railway and chief goaf area.The goaf roof with worse stability is not pressed.Some suggestion had been submitted at the end of the paper to inprove the groundsill stability.
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