Under investigation in this paper is a -dimensional Korteweg-de Vries-type equation, which can describe the propagation of nonlinear waves such as the shallow-water waves, surface and internal waves. By virtue of the Bell polynomials, symbolic computation and auxiliary independent variable, the bilinear forms, Backlund transformations and soliton solutions are obtained. Solitonic propagation and elastic collisions between/among the two- and three-solitons are discussed analytically and graphically. It can be seen that, after each collision, solitonic shapes and amplitudes keep invariant except for some phase shifts, and the smaller-amplitude soliton moves faster and overtakes the larger.