某金矿露天潜孔凿岩爆破参数的比较与确定

Comparison and Determine of Open-air DTH Drilling and Blasting Parameters in a Gold Mine

我国南方某金矿的矿石类型为:碎裂中细粒花岗岩、碎裂岩、隐爆角砾岩以及强硅化英安玢岩。矿山生产初期在进行露天开拓和开采时,参照类似矿山经验参数和经验公式,初步拟定该金矿按露天潜孔凿岩爆破参数进行穿爆作业,通过对爆破效果的详细对比与认真分析,确定出适合于该金矿矿岩开采技术条件的潜孔凿岩爆破参数,使穿爆作业达到安全、高效、经济合理之目的。

The types of a gold mine in southern China are cataclasm medium -fine granite ,cataclastic rock , cryptoexplosion breccia and strong silicification dacite -porphyrite . In the early production of exploration and mining , according to the experience parameters and experience formula from similar mine , the open -air DT H drilling and blasting parameters were initially proposed in this golden mine . After detailed con‐trasting and carefully analyzing the blasting effect ,the DT H drilling and blasting parameters fit for the technical mining condition of this mine were confirmed , on the basis of the drilling and blasting parameters , the exploding operation can achieve the purpose of safe , efficient , economic and reasonable .