在爆区周围环境复杂、岩体节理裂隙发育的条件下，研究采用了控制破碎岩石移动的台阶爆破技术和合理的装药结构及微差起爆技术，使岩体破碎后既解体充分又不产生爆破危害，同时爆破后的大块率小于１０％． Under the circumstance that the surrounding area of ​​the blasting area is complicated and the joints and fractures of the rock mass are developed, the bench blasting technique and reasonable charge structure and differential detonation technique that control the movement of the crushed rock are adopted to make the rock mass not only disintegrate but not produce after crushing Blast damage, while the bulk rate after blasting less than 10%.