Principle of spatial delineation and temporal stagger coordinated mining of coal series co associated minerals
There are many types of associated minerals in coal series,with abundant reserves.They o-verlap with coal seams.Their occurrence states and development methods vary greatly.The rock forma-tion activities and fluid migration of each mineral mining affect the normal mining of each other.In view of the problems existing in the mining of co-associated minerals in coal systems,the concept and conno-tation of spatial delineation and temporal stagger coordinated mining of coal series co associated minerals were proposed and clarified.Based on the concept of spatial delineation coordinated mining,the mining area of coal and co-associated minerals was divided into coal priority mining areas and co-associated minerals priority mining areas.Meanwhile,a coordinated mining protection zone is set up according to the laws of mining rock formations activities and fluid migration as a buffer area for the mining of coal and associated minerals,so that the mining activities of coal and associated minerals can avoid each other in space and do not affect each other.Based on the concept of temporal stagger coordinated mining,the mining sequence of coal and co-associated minerals in resource overlapping areas is staggered.The prior-ity mining degree of co-associated overlapping minerals is established based on the strategic demand at-tributes and economic value of mineral resources,thereby determining the mining sequence of co-associ-ated overlapping minerals.After the mining of priority minerals is completed and the rock formation ac-tivity stabilizes or the fluid migration is within a controllable range,the overlapping minerals above or below the goaf can then be mined.By rationally dividing the mining sequence of co-associated overlap-ping resources,comprehensive development of overlapping mineral resources can be achieved.The key parameters and determination principles of the spatial delineation and temporal stagger coordinated mining of coal and associated mineral are given.Through similar simulation tests of spatial delineation and temporal stagger coordinated mining of coal and aluminum,the process and phenomenon of spatial delineation and temporal stagger coordinated mining of coal and aluminum are systematically explained,and the laws and parameter rationality of spatial delineation and temporal stagger coordinated mining of coal and aluminum were analyzed.A complete set of spatial delineation and temporal stagger mining technologies such as synchronous/asynchronous opposite direction mining,synchronous/asynchronous reverse direction mining,and synchronous/asynchronous same direction mining were proposed.
coal seriesco-existed and associated mineralsspatial delineationtemporal staggerco-ordinated mining
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