Development of thin shale beds by mounted rippers
Abstract
Continuous improvement of technology and mechanization of open-pit mining operations has made it possible to develop mineral deposits represented by thin layers of complex structural structure. From the point of view of economic efficiency the most interesting is the selective development of the formation, which has a number of advantages over partially selective and gross excavation: preparatory works are developed independently of excavation and loading; losses of oil shale are minimal; qualitative averaging of organic mass in the face is achieved; excavation and loading machines and technological transport do not dwell on the movement of rock layers; there is no need for mechanical method of enrichment of oil shale; drilling-and-blasting method is replaced by mechanical ripping.
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