Geotechnical investigations form an integral part of any dam design. It is essential for engineers to gain a complete understanding of the site’s geotechnical characteristics in order to design a safe and reliable structure.  A dam geotechnical investigation is a comprehensive analysis of the geology and soils beneath a proposed dam.

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Here are some guidelines:

The first step in a geotechnical investigation is to collect background information about the site, such as topography, climate, land use, and hydrology. This will help engineers understand the existing conditions and identify any potential problems or risks associated with the dam.

The second step is to collect field data, such as subsurface soil samples and groundwater measurements. This data will be used to assess the geotechnical characteristics of the site, such as soil type, strength, permeability, compressibility, etc. 

The third step is to analyze the data. This includes using laboratory tests to determine the physical and chemical properties of the soil samples, as well as using computer models to simulate how the dam will respond to different loading and water levels.

The fourth step is to review the results and recommendations of the geotechnical investigation. Engineers must ensure that the design is safe and that it meets all regulatory requirements. Finally, the geotechnical investigation should be monitored during the construction phase. This will help to ensure that the dam is being constructed as designed and that it is safe and reliable.