土钉墙施工技术以其造价优势和良好的综合性能而被人们广泛使用,但针对部分水位较高的软土地层,往往多发流砂及管涌等故障,尤其是部分含粉粘土的冲击地层。这就需要根据实际情况,科学合理的在砂垫层地基基坑围护时应用土钉墙施工技术。 Due to its cost advantage and good overall performance, soil nailing construction technology has been widely used. However, for some soft ground strata with high water level, multiple runoff and piping faults often occur, especially the impact strata of some clay-bearing clay. This requires according to the actual situation, scientific and reasonable application of soil nailing wall construction technology in the foundation cushion of sand cushion.