摘要
针对真空预压与电渗联合加固时存在水流方向相互干扰的问题,在室内试验中开展真空预压与电渗不同联合方式对淤泥脱水效果的研究。试验结果表明:真空预压与电渗异步加固时能够获得比其他联合方式更好的加固效果,而真空预压与电渗交替加固的时间对加固效果也有显著的影响。若交替时间太短,真空预压与电渗将不能充分发挥排水作用,若交替时间太长,真空预压与电渗所提供的能量将不能被充分利用。在现场实际应用中,应根据实测排水量或排水速率的变化不断调整真空预压与电渗交替加固时间。
The dewatering effect of dredger fill using the vacuum preloading incorporated with electro-osmosis in different ways is evaluated by implementing six laboratory tests. The test results show that the asynchronous consolidation effect of the vacuum preloading incorporated with electro-osmosis is better than that of the other tests. However, the vacuum preloading and electro-osmosis will not be able to give full play to the drainage effect if the alternate time is too short. Alternatively, the energy provided by the vacuum preloading and electro-osmosis will not be able to make full use if the alternate time is too long. There are some advantages when using the vacuum preloading and electro-osmosis asynchronous reinforcement. The alternate time of vacuum preloading and electro-osmosis has to be constantly adjusted according to the water discharge or drainage rate in engineering application.
作者
孙召花
余湘娟
高明军
吴坤
SUN Zhao-hua YU Xiang-juan GAO Ming-jun WU Kun(School of Architecture Engineering, Nantong University, Nantong 226019, China Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China)
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2017年第2期250-258,共9页
Chinese Journal of Geotechnical Engineering
基金
河海大学岩土力学与堤坝工程教育部重点实验室开放基金项目(201502)
江苏省住房和城乡建设厅科技项目(2015ZD79)
关键词
真空预压
电渗
吹填淤泥
固结试验
vacuum preloading
electro-osmosis
dredger fill
consolidation test
