  Discovery of supersymmetric (SUSY) particles at the Large Hadron
Collider(LHC) has been studied for the models where squarks and gluino are much
heavier than the lightest supersymetric particle (LSP). In this paper, we
investigate the SUSY discovery in the models with degenerated mass spectrum up
to m_LSP~0.7 m_sq. Such mass spectrum is predicted in certain parameter region
of the mixed modulas anomaly mediation (MMAM) model. We find that the effective
transverse mass of the signal for the degenerated parameters shows the
distribution similar to that of the background. Experimental sensitivity of the
SUSY particles at the LHC therefore depends on the uncertainty of the
background in this class of model. We also find that SUSY signal shows an
interesting correlation between M_eff and ETmiss which may be used to determine
the signal region properly to enhance the S/N ratio even if the sparticle
masses are rather degenerated. The structure is universal for the models with
new heavy colored particles decaying into visible particles and a stable
neutral particle, dark matter.
