through the theoretical analysis and model experiment, the central bar and riverbed scouring deformation regularity are discussed in detail with the central bar protected or not;
详细论述了心滩在守护前后心滩和河床的沖刷变形规律,以及护心滩建筑物对汊道分流分沙比的影响;
one of the main reasons for the longitudinal deformation of river-crossing tunnels is riverbed scouring and siltation.