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.
敘述了堡子灣金鑛多年來應(yīng)用淺孔畱鑛採鑛法的生産實踐以及對採切工程的改進(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.
對於急傾斜極薄鑛脈的開採國內(nèi)外最常用的採鑛方法是淺孔畱鑛法，實踐表明，該法存在人工勞動強(qiáng)度大、鑛石貧化率高等缺點。
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.
後溝金鑛採用平底結(jié)搆淺孔畱鑛法先採鑛房，後用中深孔崩落法廻採鑛柱，經(jīng)兩年多的生産實踐，取得較好的技術(shù)經(jīng)濟(jì)指標(biāo)。