淤泥地层一直以来都是旋挖钻机施工的一个难点。其原因在于淤泥地层的工程性质特别差,其流塑状态导致旋挖钻机在该地层施工时缩颈、吸钻以及塌孔等不良工况频频发生。此外,由于淤泥质黏土的黏性较大,钻斗卸渣困难的现象也非常普遍。并且,由于淤泥地层承载力低,施工时也容易出现地层的不均匀沉降,存在大型钻机发生 Silt formations have always been a challenge for rotary drilling rig construction. The reason is that the engineering properties of the silt strata are particularly poor. The plastic state of the silt strata causes frequent occurrences of necking, aspiration and collapse of the rotary drilling rig during the construction of the stratum. In addition, due to the larger viscosity of muddy clay, drills are also very difficult to remove slag. In addition, due to the low carrying capacity of silt formations, uneven settlement of the strata may occur during construction, and large-scale rigs may occur