NOVEL ORE MINING METHOD SUITABLE FOR MULTI-STOPE SYNCHRONOUS MINING OF LARGE AND THICK ORE BODY

摘要

A novel ore mining method suitable for multi-stope synchronous mining of a large and thick ore body, comprising: dividing an ore body into several working areas (20) along the trend of the ore body, and dividing each working area into four stopes; digging a vein-through transportation tunnel (5) in the center of the bottom of each working area, and digging, from two sides of the vein-through transportation tunnel, several ore removal passages (11) that pass through all the stopes and function as shoveling and transporting channels for stoping and ore removal, and arranging an ore gathering trench (15) and an undercutting space (7) in the bottom of each stope; all the stopes in each working area sharing one vein-through transportation tunnel, first performing synchronous stoping on a first stope (16) and a fourth stope (19) and filling same after the stoping is completed, then performing synchronous mining on the remaining two stopes. The method can achieve air flow ventilation and improve the working environment of a working surface; all the stopes share one vein-through transportation tunnel, such that the work amount of mining and cutting is reduced, and the production cost in ore mining is lowered; and one working area is subjected to synchronous mining twice, and thus the production efficiency of ores is improved.