塑料排水带堆载法在填海造陆复杂地基处理中的试验研究

针对填海造陆形成的复杂地基的地质特点,采用分区处理,改进插板方式等多种方法联合摸清薄弱地带范围的处理方案;通过对塑料排水带堆载法加固后地基的沉降变形和孔隙水压力的测试,研究了地基沉降随时间的变化规律和孔隙水压力的时空分布规律,对比分析了加固前后土体物理力学性质的变化;处理后的地基经充分排水固结,土体物理力学指标有了明显的改善,结果表明采用的处理方案及塑料排水带堆载法处理填海造陆形成的复杂地基是合适的。

Experimental Study on Treatment of Complicated Ground Formed by Land Reclamation with Geodrain-Loading Method

According to the geologic characteristics of complicated ground formed by land reclamation,we adopted the combined methods including sub-area treatment and improvement of driving mode of plastic drainage plate,trying to find out the weak region;Through monitoring ground deformation and pore water pressure,we studied the variation law of ground settlement with time and pore water pressure with depth and time,and analyzed the variation of physical and mechanical properties of soil before and after consolidation,based on which,we found out that the physical and mechanical properties of soil were improved obviously by drainage consolidation.The examination results revealed that the scheme adopted and geodrain-loading method are appropriate for treating the complicated ground formed by land reclamation.