Technical research on accelerating consolidation of sea embankment closure earthwork;

The first stage of Xiaoshan Reclamation Engineering solved the two key problems in Qiantangjiang strong tide area with low river-bed which is always near deep-water region: one is deep water jackstone in strong tide rush area;the other is gap closure and earthwork water tight.

There are four types of obturation pattern suitable for wedge breechblock.

The construction measures of "air closure first and then river closure" are adopted which makes the construction period to be shortened over a month.