christopherseiler

 Original Title: New Progress in Key Technologies for Underground metal Mining Underground metal mine mining is a systematic project, including development, development and mining (as shown in Figure 1, underground  of high drilling efficiency, safe operation and low pollution; China has independently developed a set of drilling jumbos. The fully computerized three-arm rock drilling jumbo, which integrates drilling and charging operations, has the advantages of simple operation, high safety factor and low construction cost. These equipments ensure the quality and efficiency of rock drilling, reduce labor intensity and operation risks, and achieve a new level of automation, intelligence and environmental protection. At the same time,dth hammer bit, due to the different conditions of underground mining and the different application conditions of roadway excavation and mining operations, the blasting methods commonly used in traditional underground mines are diversified, such as millisecond blasting, extrusion blasting and smooth blasting, which improve the blasting quality to a certain extent. With the development of blasting technology, the traditional blasting technology is gradually developing towards precision blasting, green blasting and intelligent blasting. The mine precise removal in the pit. At present, it is widely used in foreign countries, but rarely used in China. With the increase of mining depth, the lifting distance is increasing, and the lifting technology is facing more and more challenges, accompanied by the increase of lifting costs of various ore materials. Therefore, it is particularly important to develop deep mine ore hoisting technology. On the whole, it is the future general trend of mine transportation and lifting to develop in the direction of large-scale, heavy load and high automation. After a long period of development, in deep mining, the vast majority of mines use rail transport, belt conveyor or trackless equipment to carry out multi-level shaft lifting. For example, in TauTona Gold Mine in South Africa, dth rock bit ,Tapered Rock Bit, a three-stage shaft lifting method is used, and then the transfer between shafts is carried out by belt or trackless equipment. Although the traditional open belt conveyor system has a simple structure, it is easy to cause dust and slide, pollute the underground environment, and has poor climbing ability and low safety factor. SiCON has developed a closed belt conveyor system to prevent sliding and dust during transportation. The transportation speed can exceed 3 m/s and the lifting slope can reach 36 °. Appropriate improvement of the system is expected to be applied to the ore transportation and lifting in deep mining in the future. At present, hydraulic lifting is mainly used in deep-sea mining. In recent years, some researchers have tried to apply hydraulic lifting in deep mines. This process can be carried out continuously, which is easier to realize the automation and intellectualization of the lifting process. However, the use of hydraulic lifting requires the establishment of ore crushing system and grinding system in deep mines, which is difficult to be applied in practice at present. At the same time, there is alsesh-shotcrete support belong to composite support. Bolt-shotcreting support has become the main reinforcement technology of rock strata in metal mines. Full-length groutedregation and no dehydration of slurry. At present, China has built the world's first industrial paste filling test platform, covering an area of about 2 000 m ², with mna. The key technologies of remote control are mainly embodied in three aspects: remote sensing of mining environment, remote operation of mining process and remote management and control of mining system, so as to realize the functions of automatic sensing and analysis, unmanned operation, remote allocation,rock drilling tools, automatic early warning and remote decision-making. Break through the key technology of intelligent mining of underground metal mines, improve the market competitiveness of mining enterprises and mining equipment manufacturing enterprises in China, and provide technical support for China to move from a big mining country to a powerful mining country. Return to Sohu to see more Responsible Editor:. wt-dthtools.com