-
1.发明授权公开(公告)号：US10787906B2
公开(公告)日：2020-09-29
申请号：US16484651
申请日：2018-05-11
发明人： Zhongping Guo , Weizhen Liu , Yong Jian , Huiqiang Duan , Hengze Yang , Wenwu Xie
摘要： Provided is a method of forming a roadway by filling gangue paste during wide roadway excavation of a thick coal seam belonging to the technical field of mining industry. The method comprises: firstly designing a width of a filing strip and a width of a new excavation roadway according to a geological condition of a coal seam; secondly, determining a length of each filling, i.e. a cyclic filling interval, according to an existing excavation technical condition of a mining shaft; when the new excavation roadway is excavated, performing supporting for a roof, a floor and an inner side of a roadway by using a strong bolt and bolt-mesh-cable; then, after the new excavation roadway is excavated for the cyclic filling interval, starting to perform roadway-expanding excavation along an outer side of the roadway; when roadway-expanding excavation is performed, performing temporary supporting for a filling strip and a junction of the filling strip and the new excavation roadway by using a single hydraulic prop in cooperation with a metal articulated roof beam; finally, after roadway-expanding excavation is completed, removing temporary supports and filling the filling strip; afterwards, the above steps are performed alternately. In this way, coal losses caused by reserving coal pillars can be effectively reduced, the impact of the underground pressure during roadway excavation is relieved and the costs of gangue treatment and roadway excavation are lowered.
-
公开(公告)号：US11047236B2
公开(公告)日：2021-06-29
申请号：US16622263
申请日：2018-12-25
发明人： Shaojie Chen , Zhaowen Du , Zhiguo Xia , Zhen Zhang , Bing Chen , Zhiyuan Li , Yong Jian
摘要： Provided is a filling mining method for a fully-mechanized top coal caving working face, which relates to the field of mining engineering technologies. The method solves the technical problems of roof control of the fully-mechanized top coal caving working face and a large ground deformation of top coal caving mining. The method includes the following steps: at step A, dividing the fully-mechanized top coal caving working face into a filling zone and a top coal caving zone along a strike of the working face, or dividing the working face into a filling zone and a top coal caving zone along a strike and an inclination of the working face; at step B, determining a cycle interval of the working face; at step C, performing supporting for the filling zone before the working face, and completing coal caving in the top coal caving zone and performing round wood supporting in the filling zone; at step D, after the filling zone reaches the filling interval, disposing a filling tarpaulin behind a hydraulic support and pumping the filling paste; at step E, repeating steps C and D to complete mining. A mining method of alternate coal caving and filling is provided to complete the filling mining of the top coal caving working face. In this way, the roof is effectively controlled, ground subsidence is reduced and advantages such as safety and high efficiency are available.
-
搜索结果
2 条记录 (耗时 0.016 秒)
