用小露天第二次开采可保证最完全和合理的回收残矿。用传统的方法进行爆破可能会引起空区顶板的崩落、破坏建筑物和构筑物,为此,需要寻求新的有效的爆破方法。杰兹卡兹甘露天矿采用顺序爆破和对角式微差爆破方案。由于药包组成直线布置,会加强垂直方向上的地震波,因此,在这一方向上的爆破地震作用并未降低。 With the second open pit mining can guarantee the most complete and reasonable recovery of residual ore. Blasting by the traditional method may lead to the vacancy of the roof and destroy the buildings and structures. Therefore, new and effective blasting methods need to be found. The Jez Kazz opencast mine uses sequential blasting and diagonal blasting. Because of the straight line arrangement of the kits, the seismic waves in the vertical direction will be strengthened. Therefore, the blasting seismic action in this direction has not been reduced.