  Employing the isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model,
the 1 GeV/nucleon deformed uranium-uranium ultra-central collisions are
simulated. Based on sensitive observables, mean square collective flow and pion
meson multiplicity, the impacts of high-momentum tails caused by short-range
correlations and the symmetry energy in high-density regions on geometric
effects are discussed under different reaction orientations. Finally, the
neural network model for identifying reaction orientations is also developed.
