On the south bank of the middle reaches of the Yangtze River and in the southeast of Hubei Province, there is a millennium old county Daye. As early as 3000 years ago, the ancestors of Huangshi had dug mountains and built furnaces to smelt here, making the bronze civilization of China a success. Among them, Tonglushan Mine is the mine with the longest mining time span in the world so far. Daye Nonferrous Metals Group Holding Co., Ltd. is located here. It is the largest holding subsidiary of China Nonferrous Metals Group. It was founded in 1953. After nearly 70 years of development, the company has grown into an important new force in China's copper industry: a company integrating mining, beneficiation, smelting, chemicals, calendering, waste heat power generation, comprehensive recovery A super large state-owned copper joint enterprise integrating scientific research and design, geological exploration, construction and installation, machinery repair and construction, and power transportation.

In the context of the construction of "green mines", the mining industry, as an important driving force for the national economic development, has gradually developed towards mechanized, automated, digital and intelligent mining to improve production efficiency and reduce resource consumption and environmental damage, which has become the consensus of the mining industry.

Safe, reliable, efficient and worry free

At the beginning of 2022, Lingong Mine won the bid for Daye Nonferrous Tunneling Drilling Vehicle Project, including three-year maintenance service. Since April, the mining area has successively introduced a number of hydraulic tunneling rigs UD391 for temporary mines to replace the traditional manual drilling operation.

The labor cost of underground excavation and mining operation is high, the work is difficult, the efficiency is low, and the safety is poor. The outstanding drilling quality, performance and operation comfort of temporary mining equipment are fully reflected in the process of underground excavation.

"Compared with manual drilling, the efficiency of UD391 roadheader has been improved by 60%~70%. A working face can be completed in two and a half hours, with only two people per shift, which can save 6~8 people." Mr. Wang, the operator of the mining area, highly recognized the temporary mining equipment. "The promotion and use of UD391, which effectively alleviates the underground employment problems, reduces safety risks and reduces labor intensity, is an important measure of" mechanized replacement "in the mining area."

While saving manpower, UD391 is equipped with FOPS&ROPS certified safe driving canopy, which provides a safer working environment for operators. Mr. Wang said: "The electric drive is used in the drilling operation, which is close to zero emissions. This not only ensures the attendance rate, but also improves the downhole operation environment."

"The operation panel of this equipment is reasonably designed, the handles of various functions are clear, and the action of the boom and the propelling beam is clear. It can quickly complete the work and save physical strength. The most important thing is that the driving ceiling is very safe, and the operators like it." Liu Di, a temporary mine service engineer who is responsible for the on-site delivery training, recalled.

In order to facilitate operators to understand the operation status of the drilling rig, UD391 is equipped with a production management system, which has the functions of drilling quantity statistics, drilling depth statistics, engine operation data, production data calculation, etc., to provide users with reliable and efficient performance guarantee.

Fine deployment and training first

The uneven degree of service specialization of underground trackless equipment has always been a pain point in the industry. In this regard, Lingong Mine closely focuses on the post market service management mode of "service localization", establishes and cultivates multiple regional service centers, comprehensively implements the "four good" services, and provides customers with one-stop solutions for product experience, user training, maintenance and guarantee, and original spare parts.

From March 2022, before the equipment arrives at the site, Lingong Mine will give 21 front-line operators in the mining area a preliminary technical guidance combining theory and practice for more than 40 days, and carry out special training on the hydraulic system, electrical system, transmission system, equipment maintenance and fault diagnosis, disassembly and assembly of key parts such as engine and drive axle, and actual operation such as vehicle driving. Through regular and institutionalized training, the theoretical level and practical ability of front-line operators have been improved, the awareness of safe operation has been further strengthened, and strong support has been provided for the scientific use of temporary mining equipment.

Mr. Wang said: "Many of the trainees are zero based. Through centralized training, they have mastered the correct operation and maintenance techniques of the equipment, and can already use the equipment skillfully. Compared with the previous manual drilling teams (4-6 people), now one shift can complete 90m ³ And there is still much room for improvement in efficiency. "