  We study two-dimensional (2D) vortex quantum droplets (QDs) trapped by a
thicker transverse confinement with a>1um. Under this circumstance, the
Lee-Huang-Yang (LHY) term should be described by its original form in the
three-dimensional (3D) configuration. Previous studies have demonstrated that
stable 2D vortex QDs can be supported by a thin transverse confinement with
a<<1um. In this case, the LHY term is described by a logarithm. Hence, two
kinds of confinement features result in different mechanisms of the vortex QDs.
The stabilities and characteristics of the vortex QDs must be re-identified. In
the current system, we find that stable 2D vortex QDs can be supported with
topological charge number up to at least 4. We reformulated their density
profile, chemical potential and threshold norm for supporting the stable vortex
QDs according to the new condition. Unlike the QDs under thin confinement, the
QDs in the current system strongly repel each other because the LHY term
features a higher-order repulsion than that of the thin confinement system.
Moreover, elastic and inelastic collisions between two moving vortex QDs are
studied throughout the paper. Two kinds of collisions can be characterized by
exerting different values of related speed. The dynamics of the stable nested
vortex QD, which is constructed by embedding one vortex QD with a smaller
topological number into another vortex QD with a larger number of topological
charge, can be supported by the system.
