| 摘要: |
| 就地固化是近年来逐渐得到应用的浅层软土处理技术。本文通过室内及现场试验,对就地固化在河塘淤泥处理中的应用及加固机理进行了研究,研究表明,结合强力搅拌头对河塘淤泥进行了就地改良固化,可在改良后的淤泥顶直接进行路基填筑等进一步工艺,实现了淤泥的就地资源化利用,同时减少了外弃土方,外借土方,有利于环境保护和造价节约。加固机理表明,强力搅拌头处理后的固化土中水泥分布相较于常规方法更加均匀,因此在相同的水泥含量情况下,能得到更高的强度。 |
| 关键词: 道路工程、固化法、原位固化、强力搅拌头 |
| DOI： |
| 分类号:U416 |
| 基金项目: |
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| Application and mechanism of in-situ solidification technology to treat shallow soft soil |
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xu liang1, Tang Tongzhi2, Bai Lanlan1, Hong Lei1
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1.JSTI Group;2.Nanjing Hydraulic Research Institute Nanjing
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| Abstract: |
| In-situ curing is a shallow soft soil treatment technology that has been gradually applied in recent years. In this paper, through indoor and field experiments, the application of in-situ solidification in the treatment of river pond sludge and the strengthening mechanism were studied. The research shows that the combination of strong stirring heads for the in-situ improvement and solidification of river pond sludge can improve the improved sludge. Further processes such as roadbed filling are carried out directly on the roof to realize the on-site resource utilization of the sludge, and at the same time reduce the amount of external spoil and borrow the earth, which is conducive to environmental protection and cost saving. The strengthening mechanism shows that the cement distribution in the solidified soil treated by the powerful mixing head is more uniform than that of the conventional method, so that under the same cement content, higher strength can be obtained. |
| Key words: Road engineering, solidification, in-situ solidification, powerful mixing head |
