黄河下游淤筑体固结技术研究与应用  

Research and Application of the Consolidation Technology of Silt-build Body in the Lower Reaches of the Yellow River

作　　者：赵彦彦 刘欣 崔天娇 

机构地区：[1]河南黄河勘测设计研究院,河南郑州450003

出　　处：《华北水利水电大学学报（自然科学版）》2014年第6期29-33,共5页Journal of North China University of Water Resources and Electric Power：Natural Science Edition

摘　　要：通过对黄河下游典型淤筑村台淤筑土的室内试验,获取淤筑土的工程地质特性及其固结沉降的基本变化规律,并基于试验数据对村台的淤筑过程进行模拟,研究淤筑体固结速度与土体物理性质指标之间的关系以及淤积黏性土在固结过程中压缩指标、孔隙比等指标的变化规律.结合当前施工技术,模拟了堆载预压和堆载+塑料板排水处理措施对淤筑体固结速度和沉降量的影响.堆载措施可加快土体固结沉降的速度,设置塑料板排水后,土体固结速度明显提高.研究结果对村台淤筑设计及村台建设有较好的参考价值.By choosing on-site drilling sampling of typical village, engineering geological properties and basic rule of consolidation set- tlement of silt-build soil were obtained with its basic physical and mechanical properties from the laboratory test. Numerical calculation were performed to simulate the process of the silt building. The laws of the void ratio, the compression index and the relationship between soil physical properties and the consolidation speed were obtained. Combining with the present construction techniques, the influence on the consolidation speed and settlement of the silt-build body were simulated from the engineering treatment measures of heapload preload method and the heap-load with plastic wick drain. Results show that heap-load can quicken the speed of consolidation settlement, and the consolidation speed of soil is obviously raised by setting plastic wick drain. These results have some practical value for the silt-buih design and construction of village platform.

关 键 词：黄河下游 淤筑体 固结速度 沉降量 

分 类 号：TV871.1[水利工程—水利水电工程]