辽东湾典型场地吹填土性质研究

Study on dredger fill properties of typical fields in Liaodong gulf

针对辽东湾地区吹填土理论研究较少的现状开展野外勘察研究,初步查明辽东湾吹填土分布特征和工程性质概况,发现吹填物源、固结时间、场地渗透条件等影响因素差异使得该地区吹填土性质多样。选定2个典型场地,通过压缩固结试验、压汞分析、扫描电镜等进一步深入分析,研究A、B两类型吹填土工程性质及微观结构特征,并结合埋深变化总结其固结规律。结果表明:A地吹填土不同埋深固结度不同,但其固结阶段相同;B地不同埋深吹填土固结度和固结阶段均不同。

Based on in-situ investigation and experiments,the paper introduces the distribution characteristics and engineering properties of the dredger fill in Liaodong gulf to supplement theoretic research of dredger fill,and their properties are various owing to effects of many factors,such as the different source of dredger fill,consolidated time and site conditions. To make further analysis, two typical fields（ A and B regions） are selected to research engineering properties and micro-structure through a series of experiments,such as compaction and consolidation, mercury penetration and scanning electron microscopy（ SEM）; then the rule of consolidation is obtained combining with the change of depth. Results show that A and B have different degrees of consolidation with different depths, however,A has the same consolidation phase and the consolidation phase of B is different.