Design scale: The daily mining capacity of the mine is 10,000 tons, the daily mineral processing capacity is 133,000 tons, the well engineering capacity is 860,000 m3, and the total construction investment is 1.67 billion yuan. Technical Features: Introduction to large-scale deep mine mining project: Since 1987, our institute has completed the preliminary feasibility study of the technical and economic feasibility of the ore deposit, the feasibility study of exploration and mining, the combination of exploration and mining, and the strengthening of 3 million tons of mines in the deep well. A series of preliminary preparations such as mining comprehensive technology research and project feasibility study report. In December 1998, the State Council approved the establishment of a large-scale deep mine. The daily mining capacity of the mine is 10,000 tons, the daily beneficiation capacity is 133,000 tons, the well engineering capacity is 860,000 m3, and the total investment of the project construction is 1.67 billion yuan. Currently, large-scale construction is under construction, which is expected in June 2004. Put into operation.
In this country the first large-scale metal mining kilometer well designed, using a number of innovative technologies, specifically:
1. No waste mine design. In the first time a fully cemented tailings stone filling method, with the backfill Gob Dongguashan copper ore production process all the waste rock and output concentrator tailings produced 85% of the remaining tailings is used to Filling the old gob area formed by the Shizishan Copper Mine in the past, thus eliminating the tailings pond and waste rock yard and realizing no-waste mining.
2. Established a complete ground pressure rockburst monitoring system. Through design and scientific research, the first complete deep rock pressure rockburst monitoring system in China was established to predict and forecast rockburst.
3. Established a ventilation system consisting of multi-level machine stations that are centrally controlled and monitored by computers. A centralized control station is established, which monitors the operation of each fan by computer and adjusts the air volume of some fans through frequency modulation, thus achieving energy saving and ensuring effective ventilation and cooling.
4. For the first time, design and adopt the domestic 10m3 bottom side dump truck and micro-machine chain underground transport signal system.
5. For the first time in the deep well hoisting system of the kilometer, the main shaft of the flexible rope channel with a wire rope of more than 1,000 meters is made of steel wire rope flexible tank, while the kilometer auxiliary shaft lifting system is below -790m, and the rigid tank and flexible tank are mixed. The way is unprecedented in China. This ensures high-speed, smooth, safe and reliable operation, and also saves capital investment and wellbore assembly time.
6. For the first time, a straight drainage system was used in the deep wells of the country. The first large-scale drainage pump station in the country with soft start and over 1000 kilometers was built, which reduced the amount of wells and drainages in drainage equipment and pumping stations, and also facilitated management and saved operating expenses.
7. Innovate the whole tailings dewatering process.
8. For the first time, the grinding process of semi-autogenous grinding and ball milling is adopted.
9. For the first time, 130m3 large-scale flotation machine and ceramic filter dewatering equipment are used in China .
10. For the first time, the international advanced level DCS automatic control system is adopted in the grinding system and beneficiation system of new mines in China.
Through the above technological innovations, the full labor productivity of the Dongguashan Copper Mine reached 12.09t/person·d, making the mine a modern mine in production technology and equipment.
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