我矿从1962年起结束了山坡露天开采。由于露天开采逐步向下部延深,地下涌水量逐年增大,因而深孔积水日益严重。为了解决深凹露天开采中水孔爆破问题,我们组成了有工人、干部、技术人员参加的三结合试验小组,在长沙矿山研究院和鞍钢矿山研究所等单位的协助下,于1967年因陋就简、自力更生的试验成功了 Mine since 1962 ended the hillside open pit mining. As open-pit mining gradually deepened to the lower part of the underground water inflow increased year by year, so the deep-hole water is increasingly serious. In order to solve the problem of water hole blasting in deep open pit mining, we formed a three-in-one experimental group with workers, cadres and technicians. With the assistance of Changsha Research Institute of Minerals and Anshan Iron and Steel Research Institute, in 1967, Self-reliance test succeeded