The miningwithfilling in goaf provides advantages for the rational mining of coal under buildings, railroads and water bodies.
采空区充填开采为“三下”煤炭的合理开采创造了条件。
2
Take an underground copper mine as studying object, on which the surface has to be protected, the mining method of sublevel filling method with roof reconstructing is studied.
以某地下铜矿为研究对象，研究了地表要求保护的前提下极破碎矿体的顶板再造上向分段充填采矿法。
3
The indoor experiment on the filling materials used for downward slicing drift miningwith cemented backfill in Gaolong Gold Mine was performed.