GPS RTK technology was introduced to solve some existing problems about holes arrangement in domestic open pit mine.Theories of accurate and precise measurements and holes arrangement were analyzed .Results show that the application of the RTK technology , compared to the previous ways used to holes arrangement , significantly facilitates in the position accuracy and efficiency .The error of holes arrangement has been decreased by about 20%as well as the efficiency increased by 1 times.Block rate has been effectively reduced from 5.0% to 2.6%.Improvement of blasting effect has been achieved , the secondary blasting and digging costs are saved , and accordingly good economic benefits are obtained .%针对国内一些露天矿布孔现状及存在的问题，使用GPS RTK测量技术，分析精确测量、布孔理论，并在露天矿爆破设计及施工现场进行实验研究。结果表明：应用GPS RTK技术进行精确布孔，较之前的布孔方式，较大提高了布孔定位精度及工作效率，布孔误差降低了将近20％，工作效率约提高了1倍；使用精确布孔技术，可以有效降低大块率，爆破大块率由5．0％降低到2．6％；使用精确布孔技术，改善了爆破效果，降低了二次破碎费用，节省了挖运成本，取得了良好的经济效益。
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