| 上海软土地区盾构施工中采用泡沫改良剂的试验研究 |
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| 引用本文： | 陈昇. 上海软土地区盾构施工中采用泡沫改良剂的试验研究[J]. 路基工程, 2016, 0(6): 193-198. DOI: 10.13379/j.issn.1003-8825.2016.06.42 |
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| 作者姓名： | 陈昇 |
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| 作者单位： | 上海申通地铁集团有限公司, 上海 200233 |
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| 摘 要： | 以上海地区典型的3,4,5,6号土为对象,对盾构施工中采用泡沫改良剂进行了试验研究。结果表明:上海软土进行盾构施工时,当室内试验中切削仪扭矩低于2150 kN·m时可不进行土体改良。对于需要改良的土体,如高黏性的上海6号土,可通过添加30%的泡沫进行改良。添加一定量的水（添加土体含水率提高约10%的水量）后,改良效果更佳。
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| 关 键 词： | 上海软土 盾构法 泡沫改良 泡沫掺量 切削仪 |
| 收稿时间： | 2019-11-11 |
Experimental Study on Foam Modifier in Soft Clay Area of Shanghai during Shield Tunneling |
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| Abstract: | The Experiment of soil foam modifer during shield tunneling is researched by the typical soil #3,#4, #5 and #6 of Shanghai. The results show that during the shield tunneling in the soft clay area of Shanghai, soil improvement may not be performed if it is verified by a cutting dynamometer during laboratory test that cutting torque is less than 2 150 kN·m. For the soil needing improvement, for example of the soil #6, 30% foam may be used for improvement. After addition of a certain amount of water (in such a way that the moisture content of the soil is increased by 10%), improvement effect becomes better. |
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