The paper introduces the construction principle and technical requirements for the secant pile retaining structure,applies the structure in the enclosure structure of the project by combining with the construction in some water conservancy project,and the construction technology and control measures are expounded,and points out the reasonable adoption of the technique can meet the demands of the projects and promote the integral construction quality.%介绍了钻孔咬合桩的施工原理及技术要求，结合某水利工程的实际施工情况，将钻孔咬合桩应用于该工程的基坑围护结构中，并对其施工工艺及控制措施进行了阐述，指出钻孔咬合桩的合理运用满足了工程施工需求，同时提升了工程的整体施工质量。
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