Definition, connotation and progress of digital mine

8) Digital intelligent body has two meanings: (1) Through digital reconstruction, the entire mine has the ability of self-analysis and decision-making, so that the mine personnel, machinery and environment are in a highly coordinated unity; ② By constantly collecting, learning and concentrating the latest knowledge of relevant experts, the nerve center of the digital mine has the ability of many experts to make collective decisions.

3. Main content and technical connotation of digital mine

3.1 Basic network platform

The basic network platform should not only meet the needs of digital content transmission and wired and wireless communication within the enterprise, but also meet the needs of the Internet, and realize information collection, transmission, storage, analysis, decision making, control, release and query through broadband optical fiber ring network, fieldbus, commercial database, multimedia database, and real-time database. It is not only necessary to ensure the interconnection of information, but also to ensure the reliability, security and timeliness of information.

3.2 Mine data warehouse

The mining data warehouse is not a simple accumulation and assembly of various databases, but must realize the integration from scattered data to standardized data. Its key technology is to establish the subject layer of the classification standard in view of the complexity, mass, heterogeneity, dynamic nature, multi-source, multi-precision, multi-time and multi-scale characteristics of geological, mineral deposit and production information and various professional applications. Establish a standardized database structure, define standardized metadata, index data and data cube, facilitate the import and export of data and automatic mining, eliminate the mine "information island" and data redundancy, and realize the rapid retrieval and transfer for various references. The real-time database must realize the active triggering of various events and ensure timeliness.

3.3 Mining industrial automation system

Mine industrial automation system includes underground conveyor belt monitoring system, main and auxiliary shaft lifting monitoring system, mine power supply monitoring system, mine drainage monitoring system, gas drainage monitoring system, main ventilation room monitoring system, pressure air room monitoring system, water supply and dust monitoring system, grouting monitoring system, mine cooling monitoring system, air volume regulation and control system, output measurement system, Ground production monitoring systems, etc., they are equivalent to the legs and hands of digital mines, although they can complete various actions but must be controlled by the brain, the brain here is the system integration platform software, through which data warehouse, safety monitoring system, safety management system, production system and scheduling system can be effectively coordinated to achieve automatic control and remote control. Achieve true management and control integration, rather than the simple connection and accumulation of subsystems.

3.4 Safety production monitoring system

Safety production monitoring system is the eyes, ears and nose of mine safety, mainly including wired communication, wireless communication and mobile communication system, mine personnel positioning system, video monitoring system, safety production environment monitoring system, hydrology monitoring system, mine pressure monitoring system, fire monitoring system, rainfall monitoring system, surface rock movement monitoring system. They provide real-time information to data warehouses, security management systems, scheduling systems, etc., for use by decision support systems.

3.5 4D GIS and visualization integration platform

Based on the unified spatial and temporal four-dimensional coordinates, after visualizing all the information in the mine (including terrain, architecture, strata, structure, ore body, hazard source, shaft and roadway engineering, mining unit, stope, working face, equipment, personnel, monitoring system, etc.), complete attribute information is configured. The true three-dimensional mine geographic information model is established, and the dynamic information obtained by 3S (GPS, GIS, RS) technology and various survey, measurement and collection means is used to correct the model and attributes in real time, forming a complete four-dimensional temporal geographic information system, and realizing the transparent management of all objects above and below ground and virtual reality system simulation.

Its key technology is not to borrow any third-party software, Realize the automatic drawing of all two-dimensional graphics, the automatic generation of three-dimensional models, and the topology analysis, network analysis, overlay analysis, cutting analysis, structural analysis, geological early warning analysis, process simulation and transparent diagnosis for professional applications (if the use of third-party software is impossible to achieve seamless integration and dynamic linkage of various applications). Only when this function is realized, can flexible and effective operation research and decision-making be realized.