Connect survey for haulage drifits is an improtant work of mine survey,it can play positive role for mining production,and it has effect for economic benefits of mine to a great extent.

• 运输巷道的贯通测量是矿山测量的一项重要工作。它对矿山生产建设起着举足轻重的作用，并在很大程度上影响矿山企业的经济效益。