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Figure 1 Residue method for climbing tank lifters, materials and equipment
1-stage transportation lane; 2- return airway; 3-climbing patio;
4-way road patio; 5-reserved heap; 6-bottom column; 7-top column
Mining and mining method for climbing tank lifters and materials and equipment in Dajishan tungsten mine
Dajishan tungsten mine 467m stage 13 #脉有有矿å—留矿法 The mining yard adopts the climbing tank lifting personnel, materials and equipment, and the stope structure is shown in Figure 1. The veins are found in the interbedded layers of the Cambrian metamorphic sandstone and sandy slate . The ore is hard and stable, f=8~10. The mine has a length of 50m and a height of 52.8m. There is a transverse fault in the NNE direction, a fault along the strike direction in the EW direction and a fault in the NE direction at the height of 28m in the west; and a fault in the NE direction at the height of 37m in the east. Within the scope of the nugget, the veins along the strike and the trend tend to be sharp, reappear, swell, shrink, etc., which have adverse effects on the mining operation and control of the mining. The center of the mine is a patio for crawling tanks. The patio is excavated and thickly crawled and not removed. It is used as a lift for recovery. Stope ends each have a cylindrical metal drop courtyard, an inner diameter of 0.7m, welded on the inner walls of the art ladders, ventilation and as emergency exits. The top and bottom columns are each 3m high and the room pillar is 2m wide. The funnels are 7m apart and a vibrating miner is installed in each funnel. The working face of the mining is not divided into steps, and the two rock drills work at the same time, and the full working face is drilled once. A non-electrical millisecond detonation system is used for the detonating tube, and the entire network is ignited by a resistance wire to ignite the fire tube to detonate. The exit ventilation is descending, and the wind flow enters the stope from the climbing tank patio, from the cylindrical tunnel at both ends to the transport lane. Then use the local fan to lead the sewage to the return airway.