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 blasting system is constructed mainly through the fine design of hole pattern parameters, the theoretical study of blasting energy consumption and the simulation of blasting scheme. The green blasting mainly uses new incendiary agents instead of explosives. ? No blasting gas is generated, which greatly improves the underground air environment and realizes underground green blasting; intelligent blasting is mainly designed by blasting intelligence. Intelligent equipment, intelligent prediction of blasting vibration and automatic identification of residual holes constitute an intelligent blasting system to realize the intellectualization of blasting technology. In the new era of technological progress and innovation, rock drilling and blasting technology has developed from traditional methods to non-blasting rock technology such as mechanical and physical rock breaking. For example, the continuous mining machine is used for mechanical rock breaking of medium hard and below ore rock, which has high working efficiency and good construction conditions and is beneficial to ground pressure control; The physical rock breaking technology of thermal crushing overcomes the limitation of rock breaking by mechanical energy alone, does not produce dust and sparks, and greatly improves the working environment. However,Mining Drilling Equipment, due to the problems of high energy consumption, high cost and serious wear and tear of props, it has not yet been popularized in China. At the same time, at this stage, China started late in the research and development of information technology and artificial intelligence technology, and the related core technologies of intellectualization are still mainly dependent on foreign countries. Therefore, at present, continuous mining has not been really realized in hard rock mines in China. 2. Transportation and lifting technology Transportation and lifting system plays an extremely important role in the production of underground mines. Through transportation and lifting, all links can be connected into an organic whole, so as to ensure the normal production of mines. The stope ore removal has experienced the development process of “manual, rail and trackless” transportation technology, and has formed a new situation from rail as the main and trackless as the supplement to trackless as the main and rail as the supplement. Underground truck is used for long-distance ore 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 ,mining drill 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 also an innovative idea of magnetic levitation elevator, but it still needs to be studied in depth and meticulously. These new technologies, new methods and new processes have injected fresh blood into the field of mine transportation and lifting, and greatly promoted the innovation and innovation of transportation and lifting technologies, methods and processes. 3. Strata reinforcement technology Metal mines are mainly aimed at reinforcing weak, broken and highly stressed rock strata. Rock reinforcement technology can be divided into passive support and active support. Passive support can not change the internal structure of rock, but can only passively bear the deformation of surrounding rock, such as traditional wood support, masonry support and steel arch support.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,dth drill bits, 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
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