Subsoil Exploration

Subsoil Exploration

1. Boring methods

   • Augers
   • Continuous flight augers
   • Rotary drilling
   • Wash boring
   • Percussion drilling

2. Common Sampling Methods

   • Standar split Spoon
   • Thin wall tube
   • Piston Sampler

3. Sample Disturbance

   • Expressed by area ratio
     • Undisturbed if less than 10%

4. Rock Drilling

   • Diamond to cut
   • Core barrel attached

5. Soil Exploration Report

   • VIsual Observation and test
   • Scope of investigation
   • General description of structure
   • Drainage facilities
   • Details of boting
   • Geo conditions

6. Other in Situ Tests

   • Vane shear test
   • Borehole pressuremeter