针对成都地区特殊、复杂的地质条件，结合地铁工程的特点，通过分析地铁工程建设中主要的工程地质问题，分析地铁岩土工程勘察的重点和难点，合理选用地质调查、钻探、井探、物探、原位测试、室内试验等多种手段的综合勘察技术。同时对设计、施工、监测等提出合理、可行的工程措施建议。

On basis of the special and complex geological conditions in Chengdu area and the features of Metro works, the author analyzes the important and difficult aspects in the geotechnical investigations of Metro works by means of analyzing the major engineering geological issues in the construction of Metro works. The author states that comprehensive investigation and prospecting technologies, such as geological investigation, borehole prospecting, shaft prospecting, geophysical prospecting, insitu test and laboratory test, should be properly selected. Furthermore, the author recommends some rational and practical engineering countermeasures for the design, construction and monitoring of Metro works.