The methods of pipe excavating and foundation treatment in silt and shifting sand areas were presented, which were proved feasible through a practical example.
着重从淤泥流砂地区的管槽开挖和基础处理两个方面进行分析论述，并引用实例论证该方法的可行性。
In coastal area deep foundation pit excavating meets problems of slope collapsing and shifting sand due to high water level and the sand soil geological condition.
沿海地区水位高，地质条件以砂土为主，大面积砂土深基坑开挖易坍塌或形成流砂，给施工带来巨大的困难。
The genetic types in river facies sand-body are divided into 5 types and corresponding measures of excavating remaining oil potential must be adopted for each type.
河流相储层剩余油成因类型丰富，可详细划分为5类成因类型，针对每一类剩余油分布形式应采取相应的挖潜措施。
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