[1]谷志峰.絮凝-真空预压-逐级加压电渗法的试验研究[J].华南地震,2021,41(01):146-152.[doi:10.13512/j.hndz.2021.01.20]
　GU Zhifeng.Experimental Study on the Improvement of Dredged Slurry by Flocculation-Vacuum Preloading-Step-by-Step Loading Voltage Electro Osmosis Method[J].,2021,41(01):146-152.[doi:10.13512/j.hndz.2021.01.20]
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絮凝-真空预压-逐级加压电渗法的试验研究()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
41
期数:
2021年01期
页码:
146-152
栏目:
土木工程防震减灾
出版日期:
2021-03-20

文章信息/Info

Title:
Experimental Study on the Improvement of Dredged Slurry by Flocculation-Vacuum Preloading-Step-by-Step Loading Voltage Electro Osmosis Method
文章编号:
1001-8662(2021)01-00146-07
作者:
谷志峰
上海浦东工程建设管理有限公司，上海 201210
Author(s):
GU Zhifeng
Shanghai Pudong Project Development Co.，Ltd.，Shanghai 201210，China
关键词:
疏浚淤泥; 絮凝; 真空预压; 电渗
Keywords:
Dredged slurry;  Flocculation;  Vacuum preloading;  Electro osmosis
分类号:
TU443
DOI:
10.13512/j.hndz.2021.01.20
文献标志码:
A
摘要:
为解决真空预压联合电渗法排水板淤堵以及电渗中后期排水效率低的问题，提出了絮凝-真空预压-逐级加压电渗法。通过监测土体出流量、土体表面沉降和电流强度，分析最终含水量、十字板剪切强度等指标，研究了不同加载电压级数下絮凝-真空预压-逐级加压电渗法对疏浚淤泥的加固效果。结果表明:新方法的土体出流量更多，土体表面沉降更显著，十字板剪切强度更高且更均匀；逐级加载电压能有效减缓电渗过程中电阻剧增的趋势；采用加载电压级数越多，加固效果越好，处理后的十字板剪切强度达到64 kPa，含水量降至40.3%。
Abstract:
In order to solve the problems of blockage of drainage plate and the lower drainage efficiency of mid-late stage of electro osmosis by vacuum preloading in combination with electro osmosis method，flocculation-vacuum preloading-step-by-step loading voltage electro osmosis method was proposed. The drainage of soil，the soil surface settlement and the current intensity were monitored. The final water content，vane shear strength and other indicators were analyzed to investigate the influence of different loading voltage levels on the improvement of dredged slurry by flocculation-vacuum preloading-step-by-step loading voltage electro osmosis method. The results showed that this new method had more soil outflow and more significant soil surface settlement. The vane shear strength of the reinforced soil is higher and more uniform. The method of step-by-step- loading-voltage effectively slowed down the tendency of sharp increase in resistance during electro osmosis process. In addition，the more loading voltage stages are used，the better reinforcement effect will be. The vane strength of soil after treatment reached 64 kPa and the water content of soil reduced to 40.3%.

参考文献/References:

[1]WANG Jun，CAI Yuanqiang，FU Hongtao. Experi-mental study on a dredged fill ground improved by a two-stage vacuum preloading method[J]. Soils and Foundations，2018，58(3):766-775.
[2]WANG Jun，FU Hongtao，LIU Feiyu，et al. Influence of the electro-osmosis activation time on vacuum electro-osmosis consolidation of dredged slurry[J]. Canadian Geotec-hnical Journal，2017，55(1):147-153.
[3]FU Hongtao，CAI Yuanqiang，WANG Jun. Experimental study on the combined application of vacuum preloading-variable-spacing electro-osmosis to soft ground improvement[J]. Geosynthetics International，2016，24(1):1-10.
[4]SUN Zhaohua，GAO Mingjun，YU Xiangjuan. Vacuum Preloading Combined with Electro-Osmotic Dewatering of Dredged Fill Using Electric Vertical Drains[J]. Drying Technology，2015，33(7):847-853.
[5]赵 森，曾芳金，王 军，等. 絮凝-真空预压加固吹填淤泥试验研究[J]. 岩石力学与工程学报，2016，35(6):1291-1296.
[6]武亚军，陆逸天，牛 坤，等. 药剂真空预压法处理工程废浆试验[J]. 岩土工程学报，2016，38(8):1365-1373.
[7]LIU Feiyu，WU Wenqing，FU Hongtao. Application of flocculation combined with vacuum preloading to reduce river-dredged sludge[J]. Marine Georesources & Geotechno logy，2020，38(2):164-173.
[8]WANG Jun，SHI Wenjie，WU Wenqing. Influence of composite flocculant FeCl3-APAM on vacuum drainage of river-dredged sludge[J]. Canadian Geotechnical Journal，2019，56(6):868-875.
[9]刘飞禹，宓炜，王军，等. 逐级加载电压对电渗加固吹填土的影响[J]. 岩石力学与工程学报，2014，33(12):2582-2591.
[10]KARUNARATNE G P. Prefabricated and electrical vertical drains for consolidation of soft clay[J]. Geotextiles and Geomembranes，2011，29(4):391-401.
[11]房营光，徐敏，朱忠伟. 碱渣土的真空-电渗联合排水固结特性试验研究[J]. 华南理工大学学报:自然科学版，2006，34:70-75.
[12]GLENDINNING Stephanie，LAMONT Black-john，JONES Colin J F P. Treatment of sewage sludge using electrokinetic geosynthetics[J]. Journal of Hazardous Materials，2007，139(3):491-499.
[13]WANG Baotian，VU M.Q. Improvement of silty clay by vacuum preloading incorporated with electroosmotic method[J]. Journal of Rock Mechanics and Geotechnical Engineering，2010，2(4):365-372.；[14]INDRARATNA B，SATHANANTHAN I，RUJIKIAT-KAMJORN C. Analytical and numerical modeling of soft soil stabilized by prefabricated vertical drains incorporating vacuum preloading[J]. International Journal of Geomechanics，2005，5(2):114-124.

相似文献/References:

[1]杨展鹏,汤家郗,宋 琢.分层强夯联合电渗法处理疏浚淤泥宏细观试验研究[J].华南地震,2022,(03):85.[doi:10.13512/j.hndz.2022.03.11]
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备注/Memo

备注/Memo:
收稿日期:2021-01-10；基金项目:国家自然科学基金资助项目(51878402)
作者简介:谷志峰(1990- )，男，硕士，建筑工程师，主要从事市政项目管理。
更新日期/Last Update: 2021-03-20