| 摘要 |
A method for protection of development working includes construction, after propagation of the sections of mechanized support, at the boundary with worked out space and the protected working, of a protective construction, formation of a slot in the roofing at the boundary with worked out space before arrangement of protective construction, with feeding the cutter element there. To decrease pressure on the protective construction and to increase stability of the protected mine working, at decrease of energy consumption of the protective construction, the slot in the roofing is formed in V-like form in cross section, with orientation of the top to inside of the massif by the axis normal to rock stratification, at that the angle formed with the side facets of the slot is 25-30º, and its depth is 0.04-0.06 of the height of the overhanging rock console, after that the protective construction is formed as combined of the bearing and cutter elements, at that the cutter element is placed under the slot, with thrust at installation to its side facets, and the bearing element with respect to the cutter one is placed at the side of the protected working. |
