几种围堰施工技术在连云港滩涂区的应用

针对连云港海滨新区滩涂区淤泥层厚、承载能力差的特点,为探讨适合该区的围堰方式,介绍了在该地区正在应用的爆破挤淤围堰技术、袋装砂围堰技术和充灌固化土围堰技术,通过总结应用中的经验得出以下结论:爆破挤淤围堰、袋装砂围堰及充灌固化土围堰3项施工技术在该区开发建设中均可行;爆破挤淤围堰的施工安全性较差,而袋装砂围堰和充灌固化土围堰的施工效率难以保证;现阶段采用爆破挤淤围堰最适宜,但袋装砂围堰和充灌固化土围堰有广阔的应用前景。

Application of several kinds of cofferdam construction techniques in tidal flat of Lianyungang

Considering the features of the tidal flat of New Coastal Area of Lianyungang City with deep and soft mud foundation and poor bearing capacity,the suitable cofferdam construction techniques were investigated.The existing several kinds of techniques in the tidal flat were introduced,that is,explosive compaction,bulky sandbags and solidified soil.From the accumulated experience,a conclusion is drawn that the cofferdam construction techniques of explosive compaction,bulky sandbags and solidified soil are all feasible.The construction safety of the explosive compaction is poorer,while the construction efficiency of the sandbags and the solidified soil is difficult to be ensured.At present,the explosive compaction is the most suitable,and the sandbags and the solidified soil have wide application prospect.