输电线路基坑开挖常遇见软弱土层、流砂坑等，可采用换填法，或采用换填法结合联合式筏板基础等进行地基处理。本文提供了三个实际工程应用案例，以飨读者。%During transmission tower foundation ditch excavation , sometimes soft soil layer and frequent flow of sand oftenhappen .Many kinds of processing method can be used .For example, replacement of ground treatment or replacement of ground treatment with union raft foundation. Here are three successful applications of replacement method. Hope to provide readers with some project experience.
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