我们所施工的地区已经进入矿床勘探末期,勘探网密度小(40×50),钻孔质量要求高。现在施工的钻孔,都是在一批老孔中间穿插,孔斜要求十分严格,如在560米处切穿矿层,要求穿切点距设计轴线垂直距离不得超过12米,比工程规范要求高得多(工程规范允许达33米),加之受地质构造影响, Our construction area has entered the late exploration deposit, exploration network density is small (40 × 50), drilling quality requirements. Now the construction of drilling, are in the middle of a group of old holes interspersed, hole oblique very strict requirements, such as cutting through the seam at 560 meters, the required cutting point from the design axis vertical distance of not more than 12 meters, higher than the engineering norms Much more (engineering standards allow up to 33 meters), combined with the geological structure affected,