露天爆破钻孔施工工艺研究

钻孔质量的好坏，直接关系到爆破效果的优劣。在露天矿山开采中，如果钻孔质量不好，爆破后易留有根底，直接影响铲装；大块率偏高，影响后续工作，对大专需要进行二次破碎处理，影响工程进度，并且提高了矿石的成本。本文阐述了露天深孔爆破的钻孔施工工艺，对露天爆破钻孔有参考和指导作用。

Studying on Techniques of Borehole in Surface Blasting

The quality of borehole directly influences the effect of blasting. In the course of surface mining, it is easy to exit bedrock and affect loading if the borehole is bad quality; if the quantity of massive rock is excessive, it will affect a series of work and need to reblast massive rock , interferes schedule of engineering and increase the cost of engineering. The essay expatiates the techniques of borehole in surface blasting, and instructs the construction of borehole in surface blasting.