Page 9 - 2 Nurul Eilmy
P. 9

PROBLEM STATEMENT (cont.)



                                                                                              reg i on.
         3 .  Li mi t at i on  of  references  on  excav at ab i li t y  assessment  for  t rop i cal


                                                         S e i s m i c  m e t h o d s  a r e  w i d e l y  u s e d  i n  r o c k
                                 Met hod
                      Sei smi c                          e xc a v a t i o n ,  b u t  a c c u r a t e  r e s u l t  c a n n ot  b e
                      (Cater p i llar,1993 )             o b t a i n e d  b y  t h i s  m e t h o d  a l o n e .  S e v e r a l
                                                         f a c t o r s  a r e  n o t  t a ke n  i n t o  a c c o u n t  i n  t h i s


                                                         m e t h o d  N e e d  a n  e x p e r i e n c e  p e r s o n  t o
                                                                          d at a.
                                                         i nter p ret  t he
                d
                o
                h          Gr ap hi cal
                t                                        The   g r ap hi cal  met hod  i s  commonly   used   for
                e
                M         (Pe<i fer  and                 q ui ck  est i mat i on  (si mp le  &  more  p r act i cal).
                t                  1994)
                c        Fookes,                         Outd ated     d ue  to  t he  ad v ancement   of
                e
                r                                                                              test i ng ).
                i                                        technolog i es   (machi ner y   and
                d
                n
                I
                           Gr ad i ng                    Thi s  classi fi cat i on  system  i s  also  d i ffi cult
                                  2 0 16)
                        (Li ang ,                        to  p r act i ce  i n  t he  fi eld .  Over all  v alue  i s
                                                         obt ai ned  by  summi ng     t he  v alues  for
                                                         each   d i fferent  p ar ameter,  sub j ected  to
                                                                                             j ud g ement .
                                                         i nter p ret at i on  and  d i fferent





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