Types of mines

In recent years, some new mining methods and equipment have been popularized and applied, and good results have been received. Such as hole grooving blasting splitting technology, hydraulic splitting technology, detonating cable row hole control blasting technology, flame cutting technology, burst pipe control blasting technology, static (expansion agent) expansion technology, black powder pot pre-cracking technology, diamond beaded rope sawing and circular saw cutting, etc., have different roles and effects in different stages of mining technology.

These mining technologies have their own advantages and disadvantages. In the case of understanding the principle of each technology and the performance of equipment and materials, combined with the actual situation of the mining area, the analysis of which technology is suitable for mining, and then optimize the combination, and finally determine the mining process and mining method applicable to the mine. It should be clear that for a mine mining, the use of a single mining method for production, from the technical and economic evaluation is not the best program, only different rocks, different geological conditions, different stages, with different combinations, is the most reasonable and most economic. The speed of the detonating cable is fast, but the blasting of two non-free surfaces at most, and the blasting of more than three free surfaces is not successful. The success of sawing with beaded saw is high, but the cost of single-side sawing is compared with blasting and flame cutting. The cost of single-side sawing is greater than that of black powder controlled blasting and hole grooving blasting. It is an indisputable fact that the cost of hole grooving blasting is low, but it can not complete the blasting of more than two free planes at the same time (at least not yet). Therefore, each method is not a panacea, although it can be done at the technical level, but the economic aspect should also be considered.

Some equipment manufacturers or technology holders, in the promotion of enterprises, blindly exaggerate the role of the technology, exaggerate the function of the equipment, this promotion with a certain exclusion, it seems that only this technology, this equipment can solve all the mining problems on the mine, other technology and equipment are not applicable, and even other technical equipment said nothing. Until you sell your stuff and make a profit. As for the applicability of the equipment after the use of problems in the process, it takes a perfunctory attitude, so that enterprises suffer losses. What is more, the theories and methods used for mining other kinds of minerals are transferred to stone mining without proof, spending hundreds of thousands or even millions of funds, making big explosions, blowing down a mountain or half the wall of the mountain at a time, and then searching for larger rocks in the rubble pile. Such a blast of the mountain volume of hundreds of thousands or even millions of cubic meters, and can use the block sorted out less than a few thousand cubic meters of waste, waste rate is extremely low, the waste of resources is extremely serious. There are also hidden cracks in the raw materials, and the rate of sheet metal production is reduced during processing, and the adverse effects caused by a blasting are very serious