南水北调天津干线沿线取土坑地基处理设计

The Foundation Treatment Design of South-to-North Water Diversion Tianjin Route Borrow Pits

天津干线穿越多处砖厂取土坑，这些取土坑范围广，深度大，都需要进行地基处理。通过对3种地基处理方案进行比选，选定碎石土＋双向土工格栅垫层的地基处理措施，并辅以有限元法对地基处理效果进行对比分析，证明碎石土＋双向土工格栅垫层的地基处理措施满足了工程要求，保证了工程安全。

Tianjin trunk of North to South transfer project passing through many brickfields borrows pits, which are of wide range and great depth and need for foundation treatment. The gravel soils plus two-way geotechnical grille were selected by comparing of three foundations treatment. The article compares the foundations treatment effects by finite element method, it proved that the foundation treatment measures of the gravel soils＋two-way geoteehnical grille can meet the engineering requirements and ensure the project safety.