According to target China building a moderately prosperous society, the national economy GDP quadrupled, the steel industry will moderate development, China Iron Mining Development Goals 2015 is an annual ore 1.1 billion t, to ensure self-sufficiency rate remained at 50%.

Mining science and technology should support the technical realization of the target of 1.1 billion tons per year. The main research contents include the following:

I. Perfection and innovation of the joint transportation system for deep mining in open pit mines

To improve the efficiency of open-pit mining and equipment-wide systems, it is necessary to master the key technologies for keeping equipment in good condition, monitor the equipment in real-time, and strictly implement maintenance and repair plans.

Second, the mine modernization information system

To expand the scope of information systems, in addition to the scheduling system, it also includes mine geological visualization system; resource reserve estimation and economic evaluation system; mining optimization intelligent optimization and rapid evaluation system; production scheduling command and control technology; production scheduling optimization system development; And disaster control technology research. Digitize metal mine basic information collection, transmission, storage and presentation; Geological Survey process visualization, digital; optimization of mining design, digital production planning and production and operation parameters; digital production scheduling command, the three-dimensional virtual reality visualization.

Third, open-pit mining to underground mining technology

Reasonable range determination of open pit and underground combined mining; determination of open pit underground combined mining technology; study of open pit and underground combined mining stope stability, rock mass failure mode of open pit and underground combined mining, development of a series of software suitable for stability analysis of open pit and underground mining System and stope stress/strain and microseismic monitoring systems. Establish a technical system for open-pit mining and mining, which will reduce mining costs by 5% to 10% and investment by 20%.

4. Modern high-strength mining technology and equipment in the pit mine

Based on the research and development of the iron ore mine in the southern area of ​​Sijiaying, the new high-strength pit mining technology such as induced caving and falling under the super-mining field is realized, and the annual output of underground mine is more than 10 million t/a, which is close to the first place in the international large pit mine. The production level of the Kiruna Iron Mine in Sweden (18 million to 23 million t/a). It is necessary to launch a new generation of underground mining equipment of its own, which must be complete, can reflect the characteristics of high quality, high performance and high technology, and enjoy international reputation and international core competitiveness.

V. Mining technology in complex and difficult mining bed pit

(1) Deep well mining technology

Taking Benxi Dataigou iron ore as the representative, research on the mechanism of mining disaster caused by high temperature, high pressure and high stress (three high) in deep depth of 1200~2000m; research on network integration technology of deep mine disaster monitoring sensor; deep mining disaster Research on visual analysis model and early warning technology; large-scale parallel visualization analysis model and prediction technology research of deep deposit mining disaster; research on moving target tracking, positioning and emergency retreat system in deep deposit mining. Establish a mechanism analysis model of deep rock mass under “three highs” and mining disturbance environment; form a massive parallel computing and analysis system for deep mining and use it for predictive analysis of mine dynamic disasters; establish seismic wave characteristic database and source type fuzzy identification model; Suitable for high-performance, low-cost, long-distance, low-energy, portable personnel and equipment tracking and positioning devices under complex environmental conditions in deep deposits; research and development of new anti-explosive formulas for deep mining; establishment of a complete ventilation management program And research and development of highly sensitive equipment to monitor underground; to solve the key technical problems such as ground pressure disasters, rockburst and rock formation control, mining methods, efficient trackless equipment utilization and mine scientific management in deep deposit mining, research and development have autonomy The achievements of intellectual property rights realize the safe, efficient and low-cost mining of deep well deposits, improve the economic benefits of mines, and ensure safe and efficient mining.

(2) Pit mining with surface protection objectives

Study the key technologies of “three under” mining (under rivers, under railways and under buildings), and carry out comprehensive research work based on various disciplines such as geomechanics, rock mechanics, mining technology, monitoring technology and engineering governance. Comprehensive study of rock movement and surface deformation and study of surface movement law under tectonic stress conditions, simultaneous monitoring methods and networks, and several technical measures.

(3) Mining of mines with water hazard

To study the method of preventing and controlling floods, to block the anti-seepage layer of the building, and to construct a water-blocking structure or a grouting plug or a curtain between the water-bearing zone and the mining zone. Dewatering: Master the rock permeability, water inflow and possible groundwater level drop intensity, using the ore body drying process. The mining of large water deposits faces many fields, many disciplines, there is no unified mode, it is necessary to adapt to local conditions, different mines, different conditions, and different treatments to study effective waterproof methods.

6. Research on Key Technologies of Mining in Lean Iron Deposit Filling Method

Solve large-scale iron deposits by mining the surrounding rock damage evolution mechanism and rock mass seepage law prediction, stage post-filling method mining disaster prediction and control, low-cost new cement material development and high-concentration slurry self-flow conveying The stage of large-scale mining is the problem of super-large stopway safety, filling body stability, filling rock migration law and geological disaster monitoring and prevention and control. At the same time, research and development of low-cost, high-concentration cemented filling materials and gravity filling technology and technology, reduce filling costs, improve mining efficiency; establish a green mine where waste rock does not leave the pit, tail sand is not human, and wastewater does not flow out. It not only develops and utilizes iron-poor resources, but also realizes the safe, environmentally friendly and efficient development and utilization of difficult-to-harvest resources. Research on complex engineering geological conditions and occurrence environment of large-scale iron ore mines, monitoring and optimization control of super-large stope disasters in post-filling and filling mining, post-mortem filling method, mining rock movement law and disaster control, low-cost high-strength new filling research and development and filling and filling Ratio optimization, high-concentration foam mortar filling slurry characteristics and self-flow conveying process research.

VII. Research on key equipment for large-scale, high-efficiency and intelligent mining of metal mines

Through high-efficiency electric drive underground transport vehicle, underground large-scale low-contamination scraper, intelligent control system for underground equipment, high-efficiency multi-purpose anchor drill truck, high-efficiency deep hole rock drilling equipment, underground mine safety and environmental protection explosives and underground medium depth The development of the process equipment for the hole emulsion explosive charging vehicle, the production of a downhole dump truck with a new driving technology and a load tonnage of 35-40t can increase the climbing ability by 10%; the transportation efficiency is increased by 10% to 15%; the bucket capacity is 6~ 8 m ³ underground large-scale low-contamination scraper, the work efficiency is increased by 7% to 10%, the climbing ability is up to 25%; the drilling speed of the bolt drilling and loading vehicle is doubled compared with the existing bolt drilling equipment; The drilling diameter, drilling speed and work efficiency of the hole drilling equipment can be about 2 times that of the existing pneumatic rock drilling equipment; the latex matrix safety index and performance index are qualified, the blasthole utilization rate is high, and the full-filling is realized. The rate is low. Basically establish an intelligent control application system for underground equipment, and the emission meets the requirements of international underground off-highway vehicles.

Eight, research and demonstration of key technologies for mining energy conservation and consumption reduction

Through the blasting energy consumption based blasting block prediction and control, multi-modal transportation system jointly develop energy-saving, energy-based ventilation system based on on-demand ventilation, dynamic adaptive adjustment, mine system energy optimization and comprehensive control, and other key technologies to form metallurgical mine mining The main process energy rational distribution optimization technology, mining equipment energy efficient use technology, and strive to reduce the energy consumption of mining processes by 10% to 15%.

9. Mine ecological environment protection and restoration

Research on the technical model of rational use of damaged land in mining area and engineering demonstration; key technology research on tailings storage pit in open pit closed pit mining; research on key technologies and equipment for treatment and resource utilization of mine acid wastewater; research on bioremediation technology of heavy metal contaminated soil in dumping site And demonstration; heavy metal migration control technology in dumping field and research on new materials for blocking and blocking. Through the demonstration application of the land use technology model in the mining area, the land restoration and treatment rate will be increased by 20%; the open pit closed pit mining and tailings project will be established, and the annual discharge of tailings will be 4 million tons; the development of mine acid wastewater purification and resource utilization will be developed. Key technologies and equipment, the resource utilization rate of mine acid waste water after treatment is more than 90%, and the water treatment project operation cost is reduced by 20%; the establishment of soil heavy metal pollution microbial-plant joint restoration technology demonstration in the mining area, the vegetation reclamation rate is increased by more than 20%; Developed new technologies for controlling heavy metal migration in groundwater and blocking new materials.

X. Metal mine geological disaster control technology

Landslide control technology for open pit slope, landslide and debris flow prevention technology for mine dumps, and geological disaster control technology for mines. Prevention and control of geological disasters is a long-term task. Although some prevention and treatment experience has been accumulated, it has certain limitations and timeliness. It is also necessary to carry out this effective prevention and control technical measures from theory to practice.

XI. Marine mining

International marine mining mainly includes continuous chain bucket (CLB) mining methods, submarine remote control vehicle mining methods and fluid lifting mining methods, all of which are in the experimental stage. China conducted this research a little later, drawing on foreign experience and intending to adopt “concentrating machine”. A pump-lifting method for fluid-lifting mining methods requires basic research and testing, establishment of a marine mining laboratory, and development of an intermediate pilot program at sea. Seabed mining research is closely linked to economic goals.

12. Research on related technologies of intelligent mines

Intelligent mines are the development direction of mine enterprise informationization, and also the highest stage of mine enterprise informationization. Intelligent mine construction is a complex system engineering involving modern information technology, automatic control technology, visualization technology, virtual reality technology and mining science, geological science and other disciplines. The main contents of intelligent mine construction include digital mining system, digital beneficiation system, mining area geographic information system and mine management information system, through information acquisition and transmission technology research; deposit 3D modeling and visualization technology research; mine simulation mining technology under virtual conditions Research; research on mining optimization and auxiliary design technology; production scheduling command and control technology research; production management decision support technology research, mine production process management and control integration research. Realize the informationization, digitization and intelligence of the mine production and management process, and promote the modernization of the management system and management mode of Chinese mining enterprises. At the same time, through the research and development of commercial software with independent intellectual property rights, it will promote the formation of the entire mining IT industry and promote the development of the national mining professional software industry.

Thirteen, new methods of breaking rocks

For mining mines in pits, it is expected that there will be new breakthroughs in underground mining technology, mainly to implement the new concept of continuous mining. Continuous mining should study continuous (mechanical roller cutting and impact) mining machines and high-pressure water jet technology to achieve fewer people or even no underground. Human mining, which is a forward-looking technology, China should be listed in the national special plan to determine the special research.

in conclusion

Since the reform and opening up, China's mining science and technology has made great achievements and played an important supporting role for China to become a major steel country. At present, the annual output of iron ore has reached 850 million tons, ranking first in the world, but still unable to meet domestic demand. Ensure that the self-sufficiency rate of domestic ore reaches 50%, and the annual output of domestic mines should be expanded to more than 1.1 billion tons. To develop new mines, it is necessary to carry out deep well mining, deep-exploit mining and transportation, open pit mining, and large-scale intelligentization. Mining equipment, green mines, no waste mining, safety and environmental protection, and many other mining science and technology research, in order to support the goal of becoming a steel power as soon as possible.

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