The text introduces several problems of should be noticed during designing gravity type sinking-well in order to ensure the wellfoundation sunk to the design elevation smoothly.
The study shows that the permeability of the sand course has greater influence on the consolidation process of the sand wellfoundation and it relates to the parameters such as well resistance etc.
研究表明，砂垫层透水性对砂井地基固结过程有较大影响，且与井阻等参数有关。
3
Our country, as one of Group a Members States of IMO Council, is a big country in the shipping industry, and also it has certain experience and wellfoundation in the maritime education and training.