韩国理仑片色情在线观看,a片在线观看免费看视频,双乳被和尚揉着玩弄在线看,一本无码av中文出轨人,单亲乱对白视频在线观看,日日噜噜噜夜夜爽爽狠狠,亚洲av成人无码精品电影在线,久久精品国产亚洲av天,16表妺好紧没带套经过

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.









?