Improvement of the system of development of thick hollow seams by inclined layers
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- Ph.D., Dr.Sci. Leningrad Mining Institute
Abstract
Strong gentle strata in the USSR and abroad are developed mainly by inclined layers with roof collapse. In this system of development rack fasteners in cleaning faces allows to lay in each upper layer of wooden planking or metal mesh, which eliminates coal losses in the thickness of the seam and provides high completeness of excavation. But the use of rack support requires significant costs, heavy manual labor and reduces the production capabilities of the system, which in this form can not meet the requirements of the current period. ...
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