深层搅拌法在回填土地基加固中的应用

The Application of Deep Mixing Method to The Reinforcement of Back Fill Foundation

深层搅拌法是一种被广泛用于加固软弱地基的方法,它是利用水泥、石灰等固化剂于土粒相混合经过一系列物理-化学反应使软土硬化的方法,多用于加固淤泥、软粘土等地基。新近回填土是压缩性高,强度低的人工堆积土。目前多用强夯进行加固,由于该工程位于市区内,必须考虑噪音、振动对人和邻近建筑物的影响,故选择深层搅拌法对回填土进行加固。通过科学的设计和严格的施工管理,加固后的地基完全满足设计要求。因此采用深层搅拌法对回填土进行加固是一种行之有效的方法。文末还指出了施工时的注意事项。

Deep mixing method is a generally used approach to reinforce weak foundation, which mix hardening agent, such as cement, lime, with soil particles and make weak foundation hard through a series of physical and chemical reactions. It is generally applied to treat weak foundation, such as silt and soft clay. The recently back fill is a kind of recently deposited soil with high compression and low strength and is commonly reinforced by dynamic compaction at present. The effects of noise and vibration to citizens and near buildings must be considered owning to this project lying in urban areas. So deep mixing method is chosen to reinforce back fill. Reinforced foundation can utterly meet the need of design by scientific design and stringent working management. As a result, deep mixing method is a useful way to treat back fill. Some attentions are pointed out at the end of paper.