| 摘要 |
FIELD: coal-mining industry. ^ SUBSTANCE: the invention is dealt with mining and may be used at development of coal fields of flat and inclined dipping. The technical result is to increase efficiency of a coal deposit working off by cost reduction on transportation of coal and taken the stripped rocks out from a career. For this purpose the method includes baring of a coal field and a terrace by terrace excavation of stripped rocks and coal following the dipping of to the coal seam, transportation of coal and stripped rocks. For baring a coal deposit and transportation of coal it necessary to drive at least two collateral underground transport roadways on gradient of a seam, on its ground or under its ground in depth of a design contour of the open mining operations, and then the works are prolonged at an angle of 15-20 to horizon with an exit to the daylight surface. At that the coal excavated at terraces is transported by the conveyors placed on terraces, and conveyors in the indicated collateral underground transport roadways up to the consumer on a daylight surface, and taken out stripping rocks from the terraces are transported in a goaf career by conveyors of these terraces, and then by the conveyors installed at least on two, for example, single-span transport bridges, which are moved in direction of a seam inclination following the movement of front of mining operations making internal dumps of stripped rocks of the career. ^ EFFECT: the invention allows to increase efficiency of a coal deposits development and to reduce costs of coal and stripped rocks transportation. ^ 12 cl, 8 dwg, 1 ex |
