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本文以工程为实例，介绍了大直径人工挖孔桩桩端持力层采用地质素描、桩端超前钻探的检验方法，并根据桩端持力层出现的不同地质情况，详述了几种处理措施，其经验可供类似工程借鉴。
In this paper, engineering is taken as an example to introduce the geological sketching method and the inspection method of advanced drilling at the pile end supporting layer of large-diameter manual digging piles. Several kinds of treatment are described in detail according to the different geological conditions of the pile bearing layer. Measures, their experience can be used for similar projects.