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坍塌是土方工程建设中的一种常见事故。它经常出现在土方开挖工程和模板工程中，其不良后果：一是延误工期。二是人身伤亡。三是经济损失。现介绍一下土方开挖工程坍塌的事故原因和预防措施。一、土方坍塌的原因在土方开挖工程中，由于开挖后基坑的坡壁土体在某一坡面产生滑动?
Collapse is a common accident in the construction of earthworks. It often appears in earthwork excavation works and formworks. The negative consequences are: First, delays the construction period. The second is personal injury. The third is economic loss. Now let us introduce the causes of accidents and preventive measures for earthwork excavation collapse. First, the reasons for earthwork collapse In the earth excavation project, due to excavation of the foundation pit slope soil on a certain slope surface slide?