掏槽法在黄麦岭磷矿掘双壁沟爆破中的应用

Application of cutting method to double wall ditching blasting in Huangmailing Phosphate Mine

在黄麦岭磷矿露天开采的掘沟爆破中 ,根据掏槽法的机理 ,使用大孔径深孔掏槽 ,采用多排微差挤压爆破 ,一次形成开采所需的双壁沟 ,提高了掘沟效率 。

In the ditching blasting of open air mining in Huangmailing Phosphorus Mine, using large diameter and deep hole cutting and multi row millisecond extruding blasting, applying the mechanism of cutting method, a double wall slot is formed by blasting only once. It raises the ditching efficiency and broadens the applying scope of cutting methods.