疏浚吹填工程中潜在酸性硫酸盐土体调查与处置措施

Investigation and disposal measures of potential acidic sulphate soil in dredging and reclaiming project

针对东帝汶帝巴湾项目港池内潜在酸性硫酸盐土在疏浚吹填过程中的酸害问题,通过对施工区内酸土的地勘、调研、实验分析,明确了酸土的空间分布,根据土体内酸碱物质的成分占比,分析珊瑚砂与潜在酸土的混合特点,验证了经绞吸工艺处理后珊瑚礁区域疏浚料具有足够的自我中和能力,有效解决了项目潜在酸土的处置问题。

Aiming at the acid hazard of the potential acidic sulphate soil during the dredging and reclaiming process,within the harbor basin of the Timba Bay project in East Timor,the spatial distribution of the acidic soil was clarified through geological survey,investigation,and experimental analysis of acid soil in the construction area.Based on the proportion of acidbase materials in the soil,the mixing characteristics of the coral sand and potential acid soil were analyzed.It is verified that the dredging material in the coral reef area after the cutter suction process has sufficient self-neutralization ability,which effectively solves the potential acid soil disposal of the project.