首钢大石河铁矿把计算机用于采矿设计 ,多圈定矿石 8万多吨 ,节约运费 50 0多万元。大石河采区自 1 960年建成投产 ,累计采出矿石 2 70 0多万 t,结存矿石 70 0多万 t。由于首钢大石河铁矿的尾矿库 (原设计坝高 1 3 0 m,经过 4次加高尾矿坝已达 1 72 m)进入服役末期 ,解决尾矿库 Shougang Dashihe Iron Mine used computers for mining design, more than 80,000 tons of delineated ore, saving more than 500,000 yuan shipping. The Dashihe mining area was completed and put into production from 1960, with a total of more than 70 million tons of ore and over 70 million tons of ore deposits. Due to the end of service of the tailings dam of Shishou Dashihe Iron Mine (original designed height of 1,300 m, which has reached 1 72 m after 4 additional tailings dams), the tailings reservoir