Boring for exploration of soil

BORING FOR EXPLORATION

    

       When the depth of exploration is large, borings are used for exploration.  A vertical bore hole is drilled in the ground to get the information about the sub-soil strata.  Samples are taken from the bore hole and tested in a laboratory.  The bore hole may be used for conducting in-situ tests and for locating the water table.  Extensometers or pressure meter may also be installed in the bore hole for the measurement of deformation in the sub-strata.

     Depending upon the type of soil and the purpose of boring, the following methods are used for drilling the holes.

                  1.     Auger Boring
                  2.     Wash Boring
                  3.     Rotary Drilling
                  4.     Percussion Drilling
                  5.     Core Boring.

     A few holes are drilled during the preliminary investigation.  In the detailed investigations, a large number of holes are drilled to thoroughly investigate the sub-soil strata.

     The results of bring are presented in the form of boring-log and sub-surface profiles