新吹填淤泥的工程性质变化特性研究  

Study on Variety of Engineering Characteristic of Fresh Hydraulic Fill Mud

作　　者：龚镭 余文天[2] 

机构地区：[1]招商局蛇口工业区有限公司前湾建设指挥部,广东深圳518000 [2]深圳鲲鹏工程顾问有限公司

出　　处：《工程勘察》2008年第6期23-25,共3页Geotechnical Investigation & Surveying

基　　金：科技部科研院所技术开发研究专项资金项目(NCSTE-2007-JKZX-261).

摘　　要：围海造地工程中新吹填细颗粒土会经过析水落淤-自重压密-排水固结的过程。晾晒蒸发失水在表层强度的增长中起重要作用,其影响深度约在2.5m。吹填完成60d后,晾晒蒸发失水作用获得表层淤泥强度的速率明显减小。加速吹填细颗粒落淤形成土体骨架,可提前获得更高的土体强度。结构强度在新吹填淤泥强度形成过程中可能存在明显的作用。Fresh hydraulic fill mud in the process of land reclamation will take the procedure of grain sediment, self-weight compression and drainage consolidation. Evaporation is the main factor in the increase of surface intensity. Its influence stretchs about 2.5m in deep. 60 days after hydraulic filling cease, increase velocity of surface silt intension by evaporation reduces dramatically. Higher soil intensity could be achieved earlier if new method of speeding up grain sediment can be developed. Structure intension plays possibly important effect in the vrocess of intention increase of fresh flown mud.

关 键 词：新吹填淤泥 围海造地 结构强度 促淤 

分 类 号：TU472[建筑科学—结构工程]