论文部分内容阅读
我队在某矿区施工采用取出式导斜器进行定向钻进和纠斜，对解决矿区钻孔弯曲有一定效果。现将使用情况介绍如下：一、矿区岩矿层及孔斜概况1．岩矿层矿体位于基性——超基性岩体与围岩的接触带附近，岩体近南北（155°——335°）走向，倾角50°——80°，向245°倾斜。矿体大部份在围岩（片岩及片麻岩）以下。片岩及片麻岩倾角40°——65°，向110°——140°方向倾斜，片理、层理发育，软硬不均，可钻性4——9级，绝大多数孔段采用钢粒钻进，极易孔斜。
My team in a mining construction using the withdrawable inclined guide for directional drilling and skew correction, to solve the drilling of drilling has a certain effect. Now the use of the introduction are as follows: First, the rock and mine rock and slant profile 1. The rock ore body is located near the contact zone between the basic-ultramafic rock mass and the surrounding rock. The rock mass travels nearly south-north (155 ° -335 °) with an inclination of 50 ° -80 ° and a slope of 245 °. The ore body is mostly below the surrounding rock (schist and gneiss). Silt and gneiss have inclination of 40 ° - 65 °, inclining to 110 ° - 140 °, with cleavage and bedding development, soft and hard unevenness, drillability of 4 - 9, most of the holes Drilling steel, easily inclined hole.