en.Wedoany.com Reported - CRCC Heavy Industry established a special task force at an iron mine and deployed a medium-deep hole charging vehicle to solve the charging difficulties caused by borehole distortion and collapse in soft, loose ore strata, ensuring safe and efficient mine production.
The mine's complex geological conditions, combined with traditional manual drilling methods using simple equipment, led to widespread distortion and collapse of medium-deep holes. Using simple pneumatic chargers with manual tube feeding not only resulted in high labor intensity, difficult tube insertion, low efficiency, and high safety risks, but also made it hard to control charging accuracy, thereby affecting blasting and ore extraction results and limiting mine production capacity. To address this, CRCC Heavy Industry dispatched a core technical team to collaborate with the mine in tackling the technical challenges.
The on-site team conducted in-depth underground surveys and developed comprehensive solutions based on working conditions. They optimized and upgraded the entire process—equipment, technology, maintenance, and hole formation—fully deploying the self-developed charging vehicle from CRCC Heavy Industry. For distorted and collapsed boreholes, the team optimized the vehicle's structure, power, and functional modules to eliminate tube jamming and blockage. They also innovatively applied a red-line initiation process combined with a new pipeline cleaning method to improve operational smoothness and equipment stability. Hands-on training was provided on-site to ensure the implementation of new equipment and processes.
The charging vehicle is fully adaptable to complex mine conditions, consistently achieving a standard charging density of 6.5 kilograms per meter. It resolves high-risk safety issues such as uneven charging density and difficult tube insertion in complex conditions, significantly improving blasting uniformity and overall effectiveness. The vehicle's charging efficiency reaches over 70 kilograms per minute, greatly reducing construction time compared to manual charging. Full mechanization reduces labor intensity and eliminates safety hazards.
Through targeted efforts, CRCC Heavy Industry has fully overcome the related technical challenges. Currently, single-row borehole charging takes only 25 minutes, with a single-row charge weight of 600 kilograms, and single-row blasting yields over 100 vehicles of ore. Blasting quality, operational efficiency, and ore output have all been comprehensively improved.
This effort demonstrates CRCC Heavy Industry's capabilities in equipment development, on-site service, and emergency problem-solving. By leveraging high-end intelligent equipment and customized technical services, CRCC Heavy Industry empowers the industry, supporting safe, efficient, and green mine development.
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