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文章针对博茨瓦纳迪克戈洪粘土心墙堆石坝开挖工程中遇到特殊的地形地势特点,结合现场地形条件及对爆破料的质量要求,采用“先孔后网”的设计思路,随着爆破钻孔的形成,即时调整优化爆破网络设计,达到有效控制各级粒径的产量,保证爆破级配料达到要求。通过“先孔后网”的实例应用,总结出了地势高低起伏大、施工道路布置困难等特殊地形条件下“先孔后网”钻爆的成功经验,为类似工程提供了一定的借鉴作用。
In this paper, aiming at the special topographic and terrain characteristics of Dickonghong clay core rockfill dam in Botswana, with the topographic conditions of the site and the quality requirements of blasting materials, The formation of blasting borehole, real-time adjustment and optimization of blasting network design, to effectively control the output of all levels of particle size to ensure that the blast grade ingredients to meet the requirements. Through the application example of “first hole after net”, this paper summarizes the successful experiences of drilling before blasting in special topography, such as the ups and downs of the terrain and the difficult construction road layout, and provides a certain experience for similar projects The role of reference.