高填方机场的建设场地往往具有复杂的水文地质环境,解决好高填方地基冲沟底部多层次立体的排水问题,对机场保障长期的使用性能具有重大的现实意义。针对冲沟底部流水及两侧壁不同高度裂隙渗水,提出了引导式立体排水方法,并详细论述了高填方地基下引导式立体排水各工序(冲沟底部清理、碎石垫层铺设、构筑盲沟、回填土及铺设塑料排水板)的施工技术要点。排水效果和深层沉降监测两个方面的评价结果表明,引导式立体排水具有良好的排水效果,对高填方地基的长期使用性能起到了良好的保障作用,确保了机场的使用安全。 The construction site of high-fill airport often has complex hydrogeological environment. To solve the problem of multi-level drainage at the bottom of high-fill foundation is of great practical significance for the long-term use performance of airport security. Aiming at the water flow at the bottom of the gully and water seepage at different height cracks on both sides of the wall, a guided three-dimensional drainage method is put forward, and the three-dimensional guided draining process under high fill foundation (gutter bottom cleaning, gravel cushion laying, Blind ditch, backfill and laying of plastic drainage board) construction techniques. The evaluation results of drainage effect and deep settlement monitoring show that the guided three-dimensional drainage has a good drainage effect and plays a good role in safeguarding the long-term serviceability of high-fill foundation and ensuring the safe use of the airport.