Driving the plastic drainage board could form the vertical drainage channel, accelerate the vent Of hole water and the concretion of clay, reduce the sedimentation after construction, enhance the load-bearing ability of the foundation. 它可以在软土层中形成竖向排水通道,加速孔隙水的排出和地基固结,减少工后沉降,提高地基土的承载力。