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简述流砂现象产生的原因？
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简述流砂现象产生的原因？
时间：2022-01-03 07:23
关键词：
国家开放大学(建筑施工技术)
CMS专题
专科
建筑施工与管理
答案解析
由于地下水的水力坡度大，即动水压力大，且动水压力的方向与土的重力方向相反，土不仅受水的浮力，而且受动水压力的作用，有向上举的趋势。当动水压力等于或大于土的浸水密度时，土颗粒处于悬浮状态，发生流砂现象。
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