Framework and thinking of transparent geological conditions for precise mining of coal

Transparent geological condition is an important foundation for intelligent and precise coal mining. Combined with the interactive application of mine static geological elements such as big data information,whole process informa- tion perception and monitoring of multi-hazard sources,virtual reality display of dynamic geological elements,dynamic evaluation and risk identification of special geological elements,early warning,and other intelligent modules,the idea of realizing the transparency of geological conditions in the whole process of coal precise production is proposed from the angle of static and dynamic geological models. One of them is the static geological model,which can provide the basis for the evaluation,browsing and calculation of static factors such as resources,structure,shaft and roadway by collecting the data from “ space-sky-ground-shaft-bore-hole” all-around three-dimensional exploration mode,integra- ting the basic geological information of shaft and roadway construction,and reconstructing the digital model of geolog- ical characteristics of underground space. At the same time,under the influence of excavation disturbance,the deforma- tion and destruction of the geological conditions of original static underground space,as well as the parameter charac- teristics of the changes of stress-strain field,geological-geophysical field,seepage flow field,temperature field and con- centration field caused by the dynamic geological model are obtained. Also,under the action of engineering dynamics, the dynamic geological information change values of many kinds of disaster source phenomena such as separation,frac- ture,collapse,instability of surrounding rock, floor heave, rockburst, stress concentration and release, coal and gas gushing,water bursting and sand bursting and so on. In particular,in view of the different states and parameters during the occurrence and development of a dynamic geological model,through further strengthening the organic integration of multi-media,multi-phase,multi-dimensional and multi-source data,carrying out multi-parameter joint inversion,build- ing a multi-source information monitoring platform above and below the shaft,building a multi-source information data- base including coupling information,disaster causing factors,disaster precursors and four-dimensional geological infor- mation system in space and time,a real-time continuous dynamic monitoring is achieved. By injecting and transforming the parameters of the static geological model,the changing state of the geological and disaster source conditions can be inverted,so as to realize the transparency of the fine occurrence conditions of coal seams and the disaster process caused by the influence of mining on multiple disaster sources. More importantly,combined with the mining elements to detect and evaluate the special geological conditions,the whole mine geological conditions can be reconstructed transparently. In the process,it also needs to use the Internet of things,cloud platform,big data,artificial intelligence, VR and other technologies for resource integration,collection,upgrading and transformation. The purpose is to gather the scattered and scattered geological information in the mining area to realize “ active perception,automatic analysis and intelligent decision-making”. Finally,it provides a support for the precise development and utilization of coal re- sources and the construction and management of intelligent mining.