堆载预压技术在潮汕机场大面积深厚软土地基处理中的应用

为解决潮汕机场大面积深厚软土地基处理的问题，系统地研究了以塑料排水板和砂井作为竖向排水通道的堆载预压技术并应用于该工程中。首先通过地质条件的分析确定采用堆载预压方案，然后详细论述了砂垫层铺设、砂井和塑料排水板施工以及工程中出现的问题及处理对策，最后通过监测结果对处理效果进行验证。结果表明，本方案技术可靠，加固效果良好，适用于对深厚软土地基的处理。

Application of Preloading Method to the Treatment of Large-scale Deep Soft Soil Foundation of Chaoshan Airport

To solve problems caused by large-scale deep soft soil foundation of Chaoshan Airport, the preloading method which takes plastic drainage board and sand drain as vertical drainage channels was systemically studied and was applied to the project. The preloading scheme was selected based on analysis of geological conditions of the construction site, and then the details of sand cushion laying, plastic drainage board and sand drain construction, problems and their solutions during construction were discussed. Finally the result of soil foundation treatment was verified by monitoring data. The results show that the method taken in this project is reliable, effective and suitable for the treatment of deep soft soil foundation.