As a result,the short hole shrinkage method with flat bottom structure was employed to mine the stope firstly,then stoping ore pillar by medium length hole caving method. 后溝金礦采用平底結構淺孔留礦法先采礦房，后用中深孔崩落法回采礦柱，經(jīng)兩年多的生產(chǎn)實(shí)踐，取得較好的技術(shù)經(jīng)濟指標。
Therefore, the mining technology of the permanent waterproof jambs in Kangjiawan Mine is entirely feasible using the backfilling method with the parameters above. 因此，在滿(mǎn)足以上研究參數條件下，采用充填法對康家灣永久防水礦柱進(jìn)行回收是完全可行的。
