横沙八期吹填土粒径分布规律

Particle size distribution law of Hengsha-eighth-stage dredger fill

横沙八期工程由于吹填面积巨大,导致了吹填土质的多样性和分布的差异性。为了研究超大围区内吹填土土质的变化规律,通过对实际吹填场地钻孔取样,进行土工颗分试验,分析了吹填管口横向和纵向吹填土质的分布规律。结果表明:超大围区内吹填土泥面下约3.0 m深度范围内基本为粉砂,该深度以下则为细砂;距吹填管口150.0 m范围内主要为细砂,该范围以外主要为粉砂。分析结果可为吹填造陆过程中的管线布设和平整度控制提供参考依据。

Due to the huge reclamation area of Hengsha Phase 8 project, the soil quality of the reclamation is diverse and the distribution is different. To study the change law of the soil quality of the blown fill in the super-large enclosed area, the distribution law of the horizontal and vertical blown fill at the mouth of the blown fill pipe is analyzed through borehole sampling of the actual blown fill site. The results show that the depth of about 3.0 m below the surface of the filling soil in the super-large enclosure area is basically silt, and the depth below is fine sand. Within the range of about 150.0 m from the mouth of the filling pipe, fine sand is the main component, and outside this range, silt is the main component. These results can provide a useful reference for pipeline layout and flatness control in the process of land reclamation.