中深孔一次成井爆破技术在马坑铁矿的试验及应用

Test and Application of Medium and Deep Hole Blasting Technology in Makeng Iron Mine

普通法施工天井有作业环境差、安全管理难度大、施工效率低、劳动强度大等缺点。为解决人员紧张及安全管理难度大等问题,马坑铁矿进行了中深孔一次成井爆破技术试验。试验首先通过破碎范围理论及补充空间理论确定布孔、爆破参数。试验取得了相应的成功,该次成井技术解决了安全管理难及人员紧缺等问题,确保了采矿生产安全及稳定。

The common method construction patio has some disadvantages,such as poor working environment,difficult safety management,low construction efficiency,high labor intensity and so on.In order to solve the problems of personnel shortage and safety management difficulty,the medium and deep hole one-time well blasting technology test was carried out in Makeng Iron Mine.Firstly,the crushing range theory and the supplementary space theory were used to determine the hole distribution and blasting parameters,and the corresponding successful experience was obtained.The one-time well blasting technology solves the problems of safety management difficulty and personnel shortage,and ensures the safety and stability of mining production.