Page 4 - 2 Nurul Eilmy
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INTRODUCTION






                                                                                                                                           in
                                                                                                                        Crucial     pa:
               Excavatabil ity      is  defin ed   as  the  abil ity  of
                                                                                 Bl astin g                                                        stage
                                              method                                                                    pre-construction
               a  su 8ace    excavation

                (i.e.  breakin g   by   mechan ical ,     bl astin g)  to

                                                                                                  Excavatability
               u l timatel y  produ ce     a  smal l er  an d
                                         size.        Diggin g                                     Assessment
               man ageabl e       rock


                                                                                    Rippin g








                        weathered
     In  tropically
                                       :
     -  many     unce:ainties

            •
               determin ation       of  rock   mass    an d   rock
                            characteristic;
               material
                                                      method;
            •
               sel ection    of  the  excavation
                                                  an d
            •
               the   types    of  machin ery;
                                rate
            •
               produ ction

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