shrinkage stoping method

常見例句

The paper introduced shallow hole shrinkage stoping method that has been used in Baoziwan Gold Mine for many years.
敘述了堡子灣金礦多年來應(yīng)用淺孔留礦采礦法的生產(chǎn)實(shí)踐以及對采切工程的改進(jìn)。
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.
對于急傾斜極薄礦脈的開采國內(nèi)外最常用的采礦方法是淺孔留礦法，實(shí)踐表明，該法存在人工勞動強(qiáng)度大、礦石貧化率高等缺點(diǎn)。
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(jié)構(gòu)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(jì)指標(biāo)。