Site investigation drilling na fundamental geotechnical engineering discipline wey form critical foundation for design and execute deep foundation project. Dis specialized work type involve systematic exploration of subsurface soil and rock strata through precision drilling technique to characterize ground condition, assess geological property, and evaluate potential construction challenge. Site investigation drilling provide essential data for foundation engineer, pile designer, and construction professional to make informed decision about pile foundation design, ground improvement requirement, and construction methodology. Process generate comprehensive borehole log, soil sample, and in-situ test result wey directly inform structural design of piling system, retaining wall, diaphragm wall, and other deep foundation element.
Rotary core drilling na critical site investigation technique within auxiliary works phase of deep foundation project, wey enable geotechnical engineer to obtain high-quality undisturbed soil and rock sample from various depth. Dis drilling method use rotating cutting bit—typically core barrel with diamond or carbide cutting edge—to penetrate through layer of soil, clay, silt, sand, gravel, and bedrock while preserve structural integrity of recovered core sample. Unlike percussion or auger drilling, rotary core drilling maintain precise control over drilling speed, pressure, and fluid circulation, make am preferred method for detailed stratigraphic analysis and geotechnical assessment prior to deep foundation design and installation.
Percussion drilling represent fundamental and widely-used drilling method in geotechnical and site investigation work, particularly for deep foundation project where understanding subsurface condition be critical to foundation design and construction success. Also known as cable percussion drilling or cable tool drilling, dis technique employ heavy percussion hammer wey dey suspend on steel cable to repeatedly strike and break through soil and rock layer, gradually advance borehole to significant depth. Method don remain preferred approach for foundation engineering and ground investigation due to simplicity, cost-effectiveness, and ability to produce disturbed soil and rock sample wey accurately represent subsurface stratigraphy across multiple layer and horizon.