MINING METHOD FOR STRATIGRAPHIC ORE IN SOFT ROCK

摘要

The present invention relates to a mining method to exploit underground mineral resources, where an ore body to be mined containing concentrated target mineral ingredients is in an uncompacted or in a clastic state, and is present in a stratigraphically horizontal or inclined form in a soft rock. The mining method comprises: (a) a step of digging a skeletal mine of a certain shape and size in a bedrock stratum located under a mineral layer containing the ore body, and has a certain degree of compactness or higher to be safe; (b) a step of digging a main cross mine in a low slope from the skeletal mine in a direction of the inclination angle of the ore body; (c) a step of digging a drift mine from the main cross mine towards a varve among the veins of ore in four mining blocks divided from the ore body; (d) a step of digging a plurality of production cross mines from the drift mine in the direction of the inclination angles between the veins of ore for mining in the four mining blocks; (e) a step of dividing the veins of ore on the left and right of the production cross mines into unit mining areas in equal size, mining the ore starting from a blind end moving towards the drift mine, and ending at the main cross mine; and (f) a step of transporting the mined ore to the ground through the skeletal mine using a transporting means.