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随着小口径钻探事业的发展,小口径孔斜问题也逐步暴露出来。原来认为小口径就能解决孔斜的问题,现在看来并不尽然。真正易斜地区,如某些变质岩(片岩、千枚岩、板岩)地区及部分沉积岩地区的孔斜问题,仍是比较突出的,需要认真研究和解决。我们进行了小口径孔斜的预防试验,取得了一定的效果。现结合试验情况,探讨一下有关孔斜及防斜的问题。一、明冲井田的地质、孔斜情况介绍
With the development of small-diameter drilling, the problem of small-caliber holes is gradually exposed. It turned out not to be the case now that the problem of hole slash could be solved with small caliber. Really inclined area, such as some of the metamorphic rock (schist, phyllite, slate) area and part of the sedimentary rock hole slope problem is still more prominent, need careful study and solution. We conducted a small diameter hole oblique prevention test, and achieved some results. Now combined with the experimental situation, to explore the issue of hole tilt and anti-ramp. A, Mingchong mine geology, Kong oblique introduction