What they're doing is they're reclaiming the land from the sea.
2
对围海造地或其他围海工程,以及采挖砂石,应当严格控制。
The reclamation of land from the sea or other projects to enclose sea areas and the excavation of sand and gravel shall be strictly controlled.
3
围海造地工程中新吹填细颗粒土会经过析水落淤-自重压密-排水固结的过程。
Fresh hydraulic fill mud in the process of land reclamation will take the procedure of grain sediment, self-weight compression and drainage consolidation.