对于砂矿,钻探是一种最基本的勘探评价手段,但采用何种钻探技术最有效、最经济是人们在探讨的一个问题.评论一种钻探技术,首要的问题是岩样的代表性.所谓代表性包含着两个含义,一是钻孔中取出的岩样对于矿体被该孔所钻过部位的代表性;二是从一个钻孔中取得地质资料对于整个矿体的代表性. For sand, drilling is one of the most basic exploration and evaluation methods, but what kind of drilling technology is the most effective and most economical is a question that people are discussing. Commenting on a drilling technology, the primary problem is the representativeness of rock samples. The so-called representation contains two meanings, one is the representativeness of the rock sample removed from the borehole for the orebody being drilled through the borehole, and the second is the representation of the geological data from one borehole to the entire orebody.