| 摘要 |
FIELD: mining. ^ SUBSTANCE: invention refers to mining industry, and namely to development method of steep coal bed. Method involves development of coal bed by using pre-bored wells and a hydraulic monitor with a head piece. First, cross drift is made from the slope in the direction of the superface or soil of the bed, then in the cross drift there installed is a boring machine for boring inclined wells of large and small diametre at one and the same level through certain length; after that in the well of small diametre there installed is bore-hole hydraulic monitor with the head piece rotating at 180, and coal breakage is begun at the sub-level; at that, the well of large diametre, which is broken as the sub-level development proceeds, is used for transporting the broken mined rock to the slope. ^ EFFECT: complex and rational use of subsurface resources, manless mining operations, reducing costs for the bed preparation and increasing labour efficiency. ^ 5 dwg |
