目前大口径钻孔灌注桩,广泛的作为工业与民用建筑物(或构筑物)的基础。但由于这类钻孔口径较大,深度较浅,掌握不好容易产生偏斜。而钻孔(桩)的歪斜角度大小直接影响到桩的应力分布和建筑物的稳定性。显然,及时掌握钻孔的深度、方位角、顶角等地下空间位置或形态,是十分必要的。然而,在有关规范中都没有涉及到这类钻孔的测斜方法和要求。近几年,我们根据灌柱桩钻孔的特点,采用把 At present, large-diameter bored piles are widely used as foundations for industrial and civil buildings (or structures). However, due to the large diameter and shallow depth of this type of drilling, it is easy to get skew when it is not well-handed. The skew angle of the borehole (pile) directly affects the stress distribution of the pile and the stability of the building. Obviously, it is very necessary to timely grasp the depth, azimuth, top angle and other underground space locations or forms of drilling. However, the method and requirements for inclining such drilling are not covered in the relevant specifications. In recent years, according to the characteristics of bored piles, we have adopted