  We discuss production of four jets $pp \rightarrow j j j j X$ with at least
two jets with large rapidity separation in proton-proton collisions at the LHC
through the mechanism of double-parton scattering (DPS). The cross section is
calculated in a factorizaed approximation. Each hard subprocess is calculated
in LO collinear approximation. The LO pQCD calculations are shown to give a
reasonably good descritption of CMS and ATLAS data on inclusive jet production.
It is shown that relative contribution of DPS is growing with increasing
rapidity distance between the most remote jets, center-of-mass energy and with
decreasing (mini)jet transverse momenta. We show also result for angular
azimuthal dijet correlations calculated in the framework of $k_t$-factorization
approaximation.
