METHOD FOR RADIAL MINING OF OPENCAST END SLOPE REMNANT COAL

摘要

A method for the radial mining of opencast end slope remnant coal, comprising: arrangement of L-shaped main caverns (6, 13) or a U-shaped main cavern (11) and radial mining. Branch caverns (4, 9, 10) are formed by excavation from the L-shaped main caverns (6, 13) or the U-shaped main cavern (11) to a direction perpendicular to or oblique with respect to the main caverns (6, 11, 13). A coal mining system and a transportation system of the mining method are both remotely controlled. An excavator (1) excavates coal and a belt conveyor (2) conveys the coal. The ventilation of the main caverns (6, 11, 13) of the mining method is implemented in an exhaust manner, and the ventilation of the branch caverns (4, 9, 10) is implemented in a forced manner. The length of the branch caverns (4, 9, 10) of the mining method does not exceed the maximum operation and control distance of a remote control system, and the length of the main caverns (6, 11, 13) needs to ensure that all end slope remnant coal is excavated in the case that the length of the branch caverns (4, 9, 10) does not exceed the maximum operation and control distance of the remote control system. The end slope mining method features flexible cavern arrangement, high mining efficiency, a simple production process, human-machine separation, low manpower consumption, and low production costs, and has given economic benefits and social benefits.