欧美大鸡巴操β,99精品免费久久久久久,色一区二区三区婷婷奇米,国模吧之大鸡巴操逼视频

Using the 3Ddeposit modeling system to guide underground prospecting according to the mineralization regularity and the complicated geological structure, and many blind and edge ore-bodies are found. The main adit + main-auxiliary shaft development method and the electronic signal control system are adopted in underground transportation to improve the transportation efficiency; implements the “four modernizations” of development, such as mining mechanization, production and management frontline, construction team   miniaturization, quality management standardization; adopts the mechanical equipments such as drilling trolley, prying trolley, driverless railcar to realize mechanization and automation of drilling ,charging, mining, transportation, filling and so on.


a.jpg

b.jpg








Inspect and apply the advanced equipments such as drilling trolley, prying trolley, driverless railcar to realize mechanization and automation of drilling, charging, mining, 

transportation, filling and other procedures.








c.jpg

The beneficiation puts the coarse crushing in the underground to avoid the surface noise 

and dust pollution, and realizes the environmental protection, energy saving and efficient 

utilization.

dd.jpg

The main adit + main-auxiliary shaft development method and the electronic signal control system are adopted in underground transportation to improve the transportation efficiency.









? 南涧| 永州市| 安康市| 柳江县| 鹤庆县| 福泉市| 公主岭市| 横峰县| 酉阳| 汝南县| 八宿县| 林西县| 瑞丽市| 康定县| 松原市| 乐安县| 襄城县| 蒙山县| 武冈市| 湖南省| 五河县| 松滋市| 胶南市| 克东县| 辽宁省| 札达县| 梓潼县| 永川市| 龙江县| 北川| 龙井市| 宁陕县| 襄垣县| 当雄县| 偏关县| 康定县| 铜山县| 新竹县| 武胜县| 固原市| 无极县|