deep excavation pit的用法和樣例：
例句
- New design and execution techniques are adopted in South Anchor Cushion Foundation Pit,namely freezing method of row piles.
其南錨定基礎深基坑支護採用了鑽孔灌注樁排樁加多道支撐擋土的排樁凍結法。 - According to the working characters of retaining piles for deep excavation, the arching effect in adjoining soil is analyzed.
根據深基坑樁排式支護中護壁樁的受力變形特點，分析了被支護土體中的成拱作用。
