Jiangxi Baoshan is a typical skarn-type polymetallic deposit in southern Yunnan. The ore body is mainly produced in the contact zone between granite and marble, showing a layered, nested, jagged, and flaming form. The changes in rules, attitudes and thickness have brought great difficulties to ore prospection in the deep-rooted mining areas. This paper describes the use of sampling drilling as the main exploration means in the actual production of the mining area, using the middle section of the laneway or the pulse tunnel as the drilling chamber. The sampling drill holes with different azimuth and angle are arranged in the drilling chamber to replace the tunnel exploration project. The good geological effects are received and the detailed introduction is given. The characteristics and layout methods of the sample drill are compared with the pit exploration project of 74 line to 94 line drilling in the middle section of -145 m, indicating that the sampling drill has the characteristics of high efficiency, bottom cost and reliable geological data. The method of sampling drilling and prospecting is of guiding significance and reference for similar deposits.%江西宝山是赣南地区典型的夕卡岩型多金属矿床,矿体主要产于花岗岩与大理岩的接触带中,呈似层状、巢状、锯齿状、火焰状产出,矿体形态不规则,产状、厚度变化大,给矿区深边部探矿工作带来很大难度.本文叙述了在该矿区实际生产探矿工作中,采用取样钻为主要勘探手段,利用中段运输平巷或穿脉巷道作为钻探硐室,在钻探硐室中布置不同方位和角度的取样钻钻孔以代替坑道探矿工程,收到良好的地质效果;详细地介绍取样钻的特性和布置方法,通过-145 m中段74线到94线钻探与坑探工程对比,说明取样钻具有效率高、成本低,取得地质资料可靠的特点.取样钻探矿方法对同类型矿床具有指导意义和借鉴作用.
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