Introduction to copper ore mining methods

Chinese copper ore mined primarily by open pit mining and underground mining. From the current amount of ore mined, underground mining accounts for 44.6%, and open-pit mining accounts for 55.4%. So what are the copper ore mining methods?

Underground mining method

At present, the depth of underground mining of copper ore is generally 300-800m, and individual reaching more than 1000m. The development method, according to the topography of the deposit and the ore body shape, scale and burial depth, etc., usually adopts four methods: shaft development, flat development, joint development and inclined well.

The Hujiatun Mine of the Zhongtiaoshan Copper Mine is used in the joints of the Nanhegou Hangkou and the Tongmugou Hangkou. The joints of the Yuzigou Mine above 669m are developed by Pingyi, and below 669m, the blind shafts are opened. Joint development is carried out by using flat rafts, chutes and auxiliary shafts.

The Fenghuang Mountain of the Tongling Copper Mine is developed by a single mixed shaft; Tongguanshan is developed by using shafts, inclined shafts, blind shafts and peaceful concrete.

The Tonglushan III and V ore bodies of the copper mine in Daye area are developed by the central shaft of the lower plate; the Chima Mountain is jointly developed by the Pingyu-shaft; the Longjiao Mountain is developed by the Pingyu and the blind shaft; the Fengshandong uses the lower shaft and Slope road development.

In the copper mines in central Guizhou, the Dongchuan Yinmin mine is jointly developed by Pingyi-Shaft, and the falling snow mines are developed for Pingshuo, chute and auxiliary shafts, and the Kaipingping mine is flat, slippery and auxiliary inclined wells. Shishan and Fengshan of Yimen Copper Mine jointly developed with Pingyi-Shaft. The upper part of Haojiahe Mine in Luding Copper Mine was developed with Pingyi blind inclined shaft, and the middle part was opened with the inclined shaft of the bucket. The upper oxidation zone of Dayao Copper Mine is jointly developed by Pingshuo, chute and auxiliary blind inclined wells. The lower sulfide ore mine is jointly developed with bucket shaft, chute, Shimen and auxiliary blind inclined well.

The Dongxiang Copper Mine in Jiangxi Province was jointly developed by the main and auxiliary shafts and the inclined shaft; the central shaft of the Wushan Copper Mine was opened.

Liaoning SITU + 250m above the level of the pit with adit develop, + 253m main adit or less, on the plate using flanking mixing shaft development; Chinese centralized copper mine shaft development; Huanren copper zinc ore with a flat open up the shaft hole . Hebei Shouwangfen copper mine, the upper part, that is, the middle section of zero meters (absolute elevation of 500m), is developed by Pingyi slippery well, and the lower part, that is, below the middle section of zero meter, is jointly developed with Pingyi-shaft.

2. Open pit mining method

Open pit mining has the advantages of high mining efficiency and low cost compared to underground mining, but the deposit must be open-pit mining conditions. At present, the number of copper deposits suitable for open-pit mining in China is small, but they are large and extra-large deposits. The pioneering methods are mainly road transport development and joint transportation development. The largest open pit mine that is now open is the southern mountainous area of ​​the copper deposit in the Dexing Copper Mine in Jiangxi. At present, the Nanshan open-pit mining site adopts automobile transportation and horizontal mining and stripping. In addition, open-pit mining mines include Jiangxi Yongping Copper Mine and Guangdong Shitong Mine. Yongping Mine uses trenching to develop and promote horizontally. The mine is transported by fixed trunk line above -44m.

There are also mineral deposits, first open-pit mining, and then transferred to underground mining. Gansu silver white bow Hill copper plant, two mines Flaming Mountains, that is pioneering this way. In 1959, the two mines began to open-pit mining, using the wiring of the permanent car roads to return to the upper part, and the lower part of the spiral to open up. The open pit has been closed and transferred to the deep mining ore body.

From this point of view, as the large and medium-sized copper ore mining equipment shifts to large-scale, high-speed development, and a variety of mining systems suitable for different types of operating conditions, China's copper industry chain will be more stable.

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