在勘探工程中往往借用一个位置打两个倾斜角不同的鑽孔,勘探下部不同空间位置的矿脈变化情况。这一方法不仅可以大大減少迁移按装时间,而且在经济上也能大大节省资金,特别是在坑内鑽探时,此法尤为优越。为此,特将我队地表和坑内双孔的设计及其按装方法介绍如下,供大家考参。 In exploration projects, it is often necessary to borrow two holes with different inclination angles to explore the variation of the veins in different spatial locations in the lower part. This method can not only greatly reduce the migration time, but also save money economically, especially when drilling in pits. To this end, especially my team surface and pit holes in the design and installation methods are as follows, for everyone test parameters.