1986年7月21日,我们成功地组织了一次定向控制爆破工程,用炸药3.286t,分63段起爆,炸开了三水源泵站取水口的挡土土坎,形成宽50m,深7.3m 的取水口,与用机械设备水下清方比较,节约投资达70余万元。一、工程概况郑铝是我国目前最大的铝基地,其产量占全国总产量的51%强,自投产以来,一直缺 On July 21, 1986, we successfully organized a directed-controlled blasting project using explosives 3.286t in 63 steps to detonate and blast the retaining ridge of the water intake of the Sanshui source pump station to form a platform with a width of 50m and a depth of 7.3m Of the water intake, and with mechanical equipment underwater Qing Fang, saving more than 70 million investment. First, the project overview Cheng aluminum is China’s largest aluminum base, the output of 51% of the country’s total output of strong, since production has been missing