介绍了孔内深层超强夯法（SDDC）的基本原理，并将SDDC工法运用于处理某机场内厚层人工回填土地基，对无机固体废料进行了资源化回收利用。通过复合地基载荷试验、标准贯入试验和重型动力触探试验对SDDC施工质量进行检测，对SDDC桩体和桩间土的承载力效果进行评价。结果表明，经SDDC工法处理后的复合地基均匀性较好，承载力显著提高，达到工程使用要求。

This paper introduces the basic principle of SDDC method, applies it to the treatment of thick layer artificial backfill soil in an airport, and the inorganic solid waste is recovered and utilized as resources. The construction quality of SDDC is tested by loading test, standard penetration test and heavy dynamic sounding test. The bearing capacity of SDDC pile and soil between piles are evaluated and analyzed. The results show that the uniformity of composite foundation treated by SDDC method is good. The bearing capacity of foundation has significantly improved and meets the engineering requirements.

TU472