摘要
By taking the sediment profile survey of debris flow ditch in Shicheng town, Miyun County of Beijing, as an example, the paper introduces the application of Electronic Total Station and GPS in geological profile survey, data processing and profile producing. The profile survey based on Electronic Total Station and GPS is more convenient and more precise in comparison with the traditional method of profile survey. In addition, the profile drawing system based on CAD is better in graphic expression.