![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
Minefield mining is carried out in three steps, namely, development, mining and cutting. These three steps reflect the basic production process of minefield mining .
(1) Development
Ida is to develop a series of underground construction excavation ore body accessible from the surface, the ground and the underground to form a complete upgrade, transport, ventilation, drainage, water supply, electricity, gas (aerodynamic pressure), filling system (commonly known as the eight mines System) to transport personnel, materials, equipment , filling, power and fresh air to the well, and to transport and remove ore , waste rock, wastewater and dirty air from the underground to the surface. The roadways that are boring for this purpose are called open roadways or basic roadways, including main roadways and auxiliary roadways.
The former refers to the development wells that mainly promote the transportation (ore), such as the main well, the main level, the main slope; the latter refers to other auxiliary lifting transportation (personnel, materials, equipment and waste rock), ventilation, Drainage, filling and other functions of the development of wells and other pioneering roadways, such as Shimen (connecting wellbore and main transport lanes), main filling wells, main slip mines, bottom pit yards, dedicated diverticulum and main transport lanes.
(2) Precision cutting
In the ore body that has completed the pioneering work, the necessary roadway engineering is divided into the mining unit, and the work of solving the pedestrian, ventilation, transportation, filling and other problems of the mining unit is called the mining; In the unit, the work of boring the cutting patio (both vertical or inclined wellbore with outlets at both ends) and cutting the roadway and forming the necessary recovery space is called cutting.
(3) Recovery
In the mining unit that completes the cutting work, the process of carrying out a large number of mining operations, called mining, includes rock drilling, blasting, ventilation, ore transportation, and ground pressure management. The mining method is different, and the content of the mining process is not exactly the same.
Christmas Gift Boxes,Christmas Gift Tin Box,Christmas Goody Gift Boxes,Christmas Empty Flip Gift Box
Dongguan Tielangtou Hardware Products Co., Ltd , https://www.tinboxtlt.com