Analyses and Control Technologies for Hidden Dangers of Room Method Goafs in Shallow Coal Seam
Based on the field investigation and reconnaissance,prospecting and control scheme compilation for the 294 coalmines in Erdos and 188 coalmines in Yulin China,four categories hidden dangers of room method goafs in shallow coal seam were analyzed,which are hidden dangers exist under coalmines,surface buildings and structures,ecology and society,resources.Merits and demerits,applicable condition of four control technologies of room method goafs in shallow coal seam were researched including open stripe,roof collapse for unsunken goafs,grouting,and residual pillar filling for recovery.As for the room method goafs with no buildings and structures on surface,the open stripe and reclamation control scheme are prior considerations adopted when the room method goafs were shallowly buried (less than100 m) ;the roof collapse for unsunken goafs and reclamation control scheme will be adaptive when the room method goafs were relatively deeply huried (more than 100 m) or higher regional recovery ratio,and open stripe diseconomy.As for the room method goafs with important buildings and structures on surface,and big subsidence and deformation of the surface are not allowed,are fit for grouting control scheme.As for the room method goafs which buried deeply (more than 100 m) and roadway layout were apparently,or it is exist aquifers,water,buildings and structures,and so on,while big subsidence and deformation of the surface are not allowed,the residual pillar filling for recovery control scheme can be considered.
shallow coal seam room method goafs open stripe roof collapse grouting filling for recovery
Li Wen
Mine Safety Technology Branch, China Coal Research Institute, Beijing, 100013,China;State Key Laboratory of Coal Mining and Clean Utilization(China Coal Research Institute), Beijing , 100013, China
国际会议
International Symposium on Rock Mechanics and Mine Dynamic Disaster Prevention(岩石力学与矿井动力灾害防治国际学术研讨会)
辽宁阜新
英文
64-68
2013-07-13（万方平台首次上网日期，不代表论文的发表时间）