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BaoWu Dahongshan Mining Company continues to promote "the integration of industrialization and informatization", helping the mine to achieve digital transformation.
2023-10-09
With the continuous development of modern mining technology, “Replacing manpower with mechanization, reducing manpower with automation, and unmanned operation with intelligence” has become an inevitable trend for major mining enterprises in China. China Baowu Dahongshan Mining currently mines large-scale underground ore bodies with variable shapes and complex structures, resulting in an extremely large underground production system. The total length of underground roadways alone exceeds 500 kilometers, and more than 200 work faces are under construction simultaneously in various mining areas every day. At the same time, the construction environment of the work faces is complex, the types of construction are diverse, and they are characterized by high temperature, high humidity, low illumination, and mobile operations. Therefore, solving the predicament of high-risk and low-efficiency traditional manual drilling operations has become a major trend in mining technological innovation. Dahongshan Mining Company, adhering to the safety production philosophy of putting people first and life first, introduced 2022 at the end of the year CY-R40C a cutting slot raise borer, making the mining mode safer, more efficient, and lower carbon.
Drilling Tool “Starts Work”
Effectively promoting mine “Two Modernizations” construction
Raise boring is a crucial link connecting underground mine pre-cutting and blasting and mining. Ensuring the safety of raise boring construction and shortening the well completion cycle are of great significance to promoting the balance of the mine's three-level ore volume and achieving efficient and stable mine production.
Before the introduction of the raise borer, underground raise boring construction mainly used the traditional manual rock drilling and blasting method. Workers needed to operate in ultra-high confined spaces, which not only had a high risk factor and made on-site safety management difficult, but also resulted in low actual operating efficiency.
Dahongshan Mining Company uses CY-R40C a cutting raise borer, a new generation of digital crawler self-propelled raise borer specifically designed for various cutting slot excavation construction. This equipment compensates for the weaknesses in mine raise boring operations. The borer has a “punk” style sci-fi appearance and the “hardcore” strength of being agile and able to cut through rock like mud. Its well diameter is Φ 670mm ，maximum well depth 60m ，and the downward reverse reaming diameter can reach 1400mm, with a depth of 200m 。The total weight of the machine is 24 tons, consisting of a main unit, a cutter head, and a remote control. It can achieve automatic positioning, dynamic plate insertion, color digital display, and wireless operation, greatly improving the accuracy and efficiency of operation, reducing the safety risks of underground construction, and providing strong technical support and safety guarantees for underground infrastructure construction.
Significant Results from the Borer’s “Employment”
Wireless Remote Control Shows its Prowess
Facing the unique hardness conditions of Dahongshan mine rock, the raise borer has shown the characteristics of fast well completion and good quality. The well completion speed is approximately 8 meters / per day, compared to the average of only 2 meters / days for the original manual construction, an increase of 4 times. As of 2023 year 7 month, the raise borer has constructed 11 raises in the underground iron ore area, with a total length of 229.44m . It is operated wirelessly, eliminating the constraints of pipelines used by old raise borers. The entire construction control process is carried out under the safe top plate outside the raise, significantly improving the inherent safety level.
A loading worker who has worked underground for many years said: “Before, every time we had to climb into the narrow and high wellbore to load explosives, every step was nerve-wracking. Now, this high-tech raise borer construction does not require blasting, does not produce toxic and harmful gases, has low construction noise, and produces no dust, providing a better working environment for us underground. Moreover, it has its own crawler tracks and can move independently, eliminating the need for laying mobile tracks, making it convenient and time-saving to use. It is a true underground “mountain-piercing tool”.
Innovation-Driven Implantation “Technology Engine”
Steady Progress in Digital Mine Construction
In order to implement General Secretary Xi Jinping’s “lucid waters and lush mountains are invaluable assets” green development philosophy and the safety development requirements of “people first and life first”, in recent years, Dahongshan Mining has successively built an intelligent integrated control center, an intelligent safety training center, and a data sub-center for the concentrator, initially realizing the full-process control of safety production management; underground excavation, medium and deep holes, vertical construction, and pry-bar support production links have basically achieved mechanization; excavators and flat-road rail electric locomotives have achieved intelligent remote operation; the ore dressing production expert system has realized intelligent control of the production process; the exploration and use of high-efficiency and energy-saving equipment such as semi-autogenous mills, tower mills, and washing magnetic separators has also achieved significant benefits; underground ventilation, water pumps, electricity, and metering and other auxiliary facilities have achieved centralized control; a distributed photovoltaic power generation system has been built, and self-flowing water intake has been realized; it has become an outstanding representative of Yunnan Province's “Digital Industry·Digital Mine”.
In the future digital mine construction plan, Dahongshan Mining will continue to adhere to the theme of green and high-quality development, organically combining the improvement of mine production and operation levels with the construction of a safe mineral resource supply chain, leading all cadres and employees to grasp the implementation of “dual carbon” work, safety management improvement, digital mine construction, and the overall planning of capacity expansion and doubling plans. At that time, more equipment with different functions will “join” new positions, adding luster to Dahongshan Mining’s comprehensive construction into a safe, efficient, green, and intelligent new smart mine enterprise.
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