The types of stone mines include rock drilling tools open-pit mining and underground mining Open-pit mining is divided into hillside open-pit mining sunken open-pit mining and well mining Underground mining is divided into cave mining and shaft mining 1 Open-pit mining A stone mine in which the overburden and weathered layer on the surface of the stone ore body need to be stripped before mining I Deposit mining dth bit development (transportation system) 1 Concept It is a transportation channel connecting each working bench inside the mine to the block yard or the external transportation system and the waste rock yard and plays a role in preparing various tunnel projects of new mining level in time Set up a connection stone quarry Engineering of the transport system of the yard and transport ground 。 2 Tasks (1) The mined blocks are transported outward or sent to the block yard Operation mode Various hauling operations can be completed by configuring different pulleys VII Slag removal and waste discharge Before the construction of stone mines it is necessary to consider the construction of a dregs yard with sufficient capacity which is a necessary preparation for continued production and safe production Attention should be paid to the protection of resources the protection of the environment the comprehensive utilization and the improvement of efficiency According to the requirements of the Technical Specification for Decorative Stone Open-pit Mines Mining Drilling Equipment the comprehensive recovery rate of decorative stone mines should not be less than 50% [Classification of Mining Methods for Stone Mines] I Mining method Splitting blasting cutting burning etc II Selection basis of mining method 1 Geological conditions of the deposit joint occurrence development degree orebody shape
Vertical cutting of rocks with high quartz content not horizontal cutting The higher the quartz content is the higher the cutting efficiency is; the lower the quartz content is the lower the cutting efficiency is III Equipment composition Air compressor oil supply system oxygen supply system flame thrower Operation Drawing of Downward Trench Excavation by Flame Cutting Machine IV Advantages and disadvantages High efficiency (15 ~ 25 ㎡/H) flexibility large cutting depth (up to 10 m) large cutting area smooth cutting surface not affected by season and climate High noise (100 ~ 120 db) high dust high fuel consumption high cost (200 ~ 250 yuan/㎡) and high labor intensity so it must be combined with other mining methods Flame cutting machine combined with hand-held rock drill drilling row holes combined with splitting mining method (referred to as burning rock drilling mining method) is the traditional longest and most widely used granite mining method Copyright notice If it involves copyright issues please contact us to delet it! Return to Sohu to see more Responsible Editor wt-dthtools.com
Our News
