What are the development status and key technologies of unmanned driving and new energy trucks in open-pit coal mines in China?

1. In view of the trend that China's open-pit coal mines are affected by outsourcing operation mode, from semi-continuous and continuous process to discontinuous process, and from large-scale equipment to small-scale equipment, it is proposed to adopt unmanned harvesters and new energy trucks to realize safe, efficient, energy-saving and environmental-friendly transportation in open-pit coal mines. In view of the fact that China's unmanned mining trucks are in the experimental stage, and their adaptability to bad weather and mine environment is poor, and China's new energy harvesters are in the initial stage of industrialization, which is restricted by factors such as battery weight, cycle life, charging speed, battery performance, etc., unmanned mining trucks should focus on developing unstructured road unmanned sensing fusion technology, intelligent dispatching technology for large-scale operation, intelligent school bus anomaly control technology, key technology of time-varying scene matching in open pit mines, high-reliability and high-computing power unmanned computing platform, key components of large-scale harvesters, and digital-based technology.

2, Xinjiang open-pit coal mining and stripping all adopt outsourcing operation mode. In some open-pit coal mines, only thirty or forty people are responsible for daily operation and safety management. The outsourcing unit is small, scattered and weak, which leads to the wrong road of "low-end" development of open-pit mining technology and equipment. At present, the main research directions of new energy mining trucks are pure electric, hybrid and hydrogen energy. More than 200 tons of hydrogen energy heavy mining trucks have been developed. On April 20 19, the first domestic hybrid mining vehicle equipped with a lithium battery with more than 200 tons of hydrogen fuel was successfully rolled off the assembly line. On June 20 19, the100t hybrid power system developed by Shanxi Nuohao Group made its debut. Generally speaking, there is little research on hybrid electric vehicles and hydrogen mining trucks in China, which is still in the stage of laboratory research and development. The research and application of China's pure electric new energy mine trucks began about 20 18. According to incomplete statistics, there are more than 200 pure electric mining trucks in open-pit mines in China.

3. The outsourcing unit is "small, scattered and weak", which leads to the development of open-pit mining technology and equipment entering the wrong path of "low-end", and the process is reversed from semi-continuous and continuous to discontinuous. The equipment has developed from "large-scale" to "small-scale". Through unmanned driving and large-scale mining new energy trucks, the safe and intelligent placement of personnel can be realized, the intrinsic safety level of open-pit coal mines can be improved, the problems of difficulty in recruiting and retaining personnel can be solved, and the level of energy conservation and environmental protection can be improved. The successful experience of unmanned mine technology in the United States, Australia and other countries has been used for reference. The development of new generation communication technology provides technical support for unmanned driving, and the development of power battery and hydrogen energy provides basic support for the research and development of new energy trucks for mining. Therefore, China open-pit coal mine has the conditions for unmanned driving and mining with large new energy trucks.