At present, the amount of mining underground mining of manganese ore mining accounting for about 30% of the amount. The underground mining mines mainly include Hunan Xiangtan, Xiangtao Park, and Gangan Mountain; Guizhou Zunyi and Songtao; Shaanxi Lijiaying; Guangxi Longtou; Liaoning Wafang and other manganese mines.
1. Deposit development method
At present, most of them are open to Pingyi and inclined wells. There are also joint developments using Pingyi and inclined wells, such as Zunyi, Wafang and Xiangtaoyuan Phase III mining areas.
2. Mining method
The mining methods currently used include the empty field method, the filling method and the caving method.
(1) Empty field method China's underground mining of manganese mines is widely used, mainly including Zunyi, Longtou, Huayuan, Qujiashan, Lijiaying, Dounan, Heqing, Songtao and other mines. Nine of the 15 mines in the statistics use the open field method, accounting for 60%. Mines using the open field method use the comprehensive mining method, the room and pillar mining method and the mining and mining method according to the different conditions of the ore body.
(2) Caving method includes wall caving mining method, stratified caving mining method and sublevel caving mining method. The mines adopting such mining methods mainly include Xiangtan Manganese Mine Phase I Mining Area, Tuanxi and Hanyuan Manganese Mine.
(3) Filling method Includes water sand filling mining method and wall filling mining method. Mines adopting such mining methods include manganese mines such as Xiangtan Manganese Mine Phase II Mining Area, Xiangtao Garden, Qigan Mountain, and Tile House.
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