絮凝–分级式水平排水板真空预压法处理工程废泥浆试验研究

doi:10.13722/j.cnki.jrme.2024.0047

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摘要针对目前竖直排水板真空预压法(PVDVP)处理高含水工程废泥浆存在板材弯折和淤堵严重的问题，结合2种防淤堵技术——絮凝和分级法，提出絮凝–分级式水平排水板真空预压法(F-G-PHDVP)。该方法可在单技术基础上进一步缓解细颗粒迁移造成的淤堵问题。针对温州桩基废泥浆展开室内模型试验，对比分析传统、絮凝、絮凝–分级式3种真空预压法处理后的加固效果及淤堵情况，试验结果表明絮凝–分级式加固效果最佳。相对于传统组，絮凝组可提升十字板剪切强度83.5%；而在絮凝基础上絮凝–分级式排水量提升4.03%～12.73%，平均十字板剪切强度提升1.91%～5.66%，平均含水率降低1.66%～4.27%。絮凝–分级式真空预压法不仅增大了平均粒径，同时减缓了细颗粒的迁移，有效防止了淤堵的加剧，进一步提升了加固效果，其中，30–80 kPa真空压力的真空加载方式可进一步提升4.1%加固效率。为验证该方法对现场处理桩基废泥浆的可行性，结合工期因素选取30–80 kPa方案进行真空预压现场试验，结果证实该方案处理高含水废泥浆具有良好的加固效果。

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	高紫阳1
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	李嘉明1
	王军1
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	按打日拉1
	2

关键词 ：桩基工程, 工程废泥浆, 絮凝, 分级式, 水平排水板, 防淤堵机制

Abstract：In response to the serious problems of plate bending and blockage in the treatment of high water content engineering waste slurry using vacuum preloading with vertical drainage(PVDVP)，a coagulation grading horizontal drainage plate vacuum preloading method(F-G-PHDVP) is proposed by combining two anti-blockage technologies-flocculation and grading method. This method can further alleviate the clogging problem caused by fine particle migration. Indoor model tests were conducted on Wenzhou pile foundation waste mud to compare and analyze the reinforcement effect and blockage of traditional，flocculation，and flocculation-graded vacuum preloading methods. The test results showed that the grading flocculation method had the best reinforcement effect. Compared to the traditional group，the flocculation group can increase the vane shear strength by 83.5%. On the basis of flocculation，the flocculation graded drainage capacity is increased by 4.03% to 12.73%，the average vane shear strength is increased by 1.91% to 5.66%，and the average moisture content is reduced by 1.66% to 4.27%. The flocculation-graded vacuum preloading method not only increases the average particle size，but also effectively slows down the migration of fine particles，preventing the aggravation of clogging and further improving the reinforcement effect. Among them，the vacuum loading method of 30–80 kPa can further improve the reinforcement efficiency by 4.1%. To verify the feasibility of this method for on-site treatment of pile foundation waste mud，a 30–80 kPa scheme was selected for vacuum preloading field tests. The results confirmed that this scheme has a good reinforcement effect on high water content waste mud.

Key words： pile foundation engineering waste pulp flocculate grade prefabricated horizontal drain clogging prevention mechanism

引用本文:

高紫阳1，2，3，李嘉明1，王军1，2，4，按打日拉1，2. 絮凝–分级式水平排水板真空预压法处理工程废泥浆试验研究[J]. 岩石力学与工程学报, 2024, 43(9): 2329-2340.
GAO Ziyang1，2，3，LI Jiaming1，WANG Jun1，2，4，ANDA Rila1，2. Experimental study on the treatment of engineering waste slurry by flocculation-graded prefabricated horizontal drain vacuum preloading. , 2024, 43(9): 2329-2340.

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https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2024.0047 或 https://rockmech.whrsm.ac.cn/CN/Y2024/V43/I9/2329

[1]	于志强，朱耀庭，喻志发. 真空预压法加固软土地基的影响分析. 中国港湾建设，2001，(1)：26-30.(YU Zhiqiang，ZHU Yaoting，YU Zhifa. Analysis of influence of vacuum preloading method on strengthening soft soil foundation[J]. China Harbour Engineering，2001，(1)：26-30.(in Chinese))
[2]	NOZUE Y，KOSAKA H，KUMAGAI M，et al. The application of the vacuum compaction drain method to preloading the life of an offshore disposal field[J]. Nippon Koei Technical Forum，2007，16：9-19.
[3]	CHU J，YAN S W，YANG H. Soil improvement by the vacuum preloading method for an oil storage station[J]. Géotechnique，2000，50(6)：625-632.
[4]	ZHU W，YAN J，YU G. Vacuum preloading method for land reclamation using hydraulic filled slurry from the sea：A case study in coastal China[J]. Ocean Engineering，2018，152：286-299.
[5]	SHANG J Q，TANG M，MIAO Z. Vacuum preloading consolidation of reclaimed land：a case study[J]. Canadian Geotechnical Journal，1998，35(7)：740-749.
[6]	CHIBA T，SHINSHA H H，TANI Y. Development of a vacuum consolidation method employing horizontal drains[J]. Japan Dredging and Reclamation Engineering Association Tokyo，1992：7240669.
[7]	罗玉龙，彭华，何金平. 水平塑料排水带固结流态吹填土可行性研究[J]. 武汉理工大学学报，2008，30(6)：74-78.(LUO Yulong，PENG Hua，HE Jinping. Research on the feasibility of consolidating flowed dredger fill by horizontal plastic drainage strip method[J]. Journal of Wuhan University of Technology，2008，30(6)：74-78.(in Chinese))
[8]	王海燕，张文彬，刘凌云，等. 水平排水板真空预压法处理吹填土现场试验研究[J]. 中国港湾建设，2016，36(12)：57-62.(WANG Haiyan，ZHANG Wenbin，LIU Lingyun，et al. Field experimental study on dredger fill flow mud improved by vacuum preloading method employing horizontal drains[J]. China Harbour Engineering，2016，36(12)：57-62.(in Chinese))
[9]	SHINSHA H，KUMAGAI T. Bulk compression of dredged soils by vacuum consolidation method using horizontal drain[J]. Geotechnical Engineering Journal of the SEAGS and AGSSEA，2014，45(3)：78-85.
[10]	陈雷，张福海，李治朋，等. 排水板周围土体径向固结室内模型试验研究[J]. 岩土工程学报，2016，38(增1)：163-168.(CHEN Lei，ZHANG Fuhai，LI Zhipeng，et al. Experimental study on radial consolidation of soil around drainage plate[J]. Chinese Journal of Geotechnical Engineering，2016，38(Supp. 1)：163-168.(in Chinese))
[11]	FANG Y G，GUO L F，HUANG J W. Mechanism test on inhomogeneity of dredged fill during vacuum preloading consolidation[J]. Marine Georesources and Geotechnology，2019，37(8)：1 007-1 017.
[12]	娄晨晖. 排水板与初始含水率对真空预压加固吹淤泥效果及影响范围试验研究[硕士学位论文][D]. 温州：温州大学，2019.(LOU Chenhui. Experimental on the effect of PVDs and initial water content on vacuum preloading reinforcement and range of drainage dredger fill[M. S. Thesis][D]. Wenzhou：Wenzhou University，2019.(in Chinese))
[13]	苑晓青，王清，孙铁，等. 分级真空预压法加固吹填土过程中孔隙分布特征[J]. 吉林大学学报：地球科学版，2012，42(1)：169-176.(YUAN Xiaoqing，WANG Qing，SUN Tie，et al. Pore distribution characteristics of dredger fill during hierarchical vacuum preloading[J]. Journal of Jilin University：Earth Science，2012，42(1)：169-176.(in Chinese))
[14]	武亚军，杨建波，张孟喜. 真空加载方式对吹填流泥加固效果及土颗粒移动的影响研究[J]. 岩土力学，2013，34(8)：2 129-2 135.(WU Yajun，YANG Jianbo，ZHANG Mengxi. Study of impact of vacuum loading mode on dredger fill flow mud consolidation effect and soil particles moving[J]. Rock and Soil Mechanics，2013，34(8)：2 129-2 135.(in Chinese))
[15]	WANG J，CAI Y Q，FU H T，et al. Experimental study on the dredged fill ground improved by a two-staged vacuum preloading method[J]. Soils and Foundations，2018，58(3)：766-775.
[16]	李哲. 分级真空预压与逐级加压电渗法处理吹填土试验研究[硕士学位论文][D]. 上海：上海大学，2020.(LI Zhe. Experimental study on treatment of dredger fill by stepped vacuum preloading and stepped voltage electro-osmotic methods[M. S. Thesis][D]. Shanghai：Shanghai University，2020.(in Chinese))
[17]	武亚军，牛坤，陆逸天，等. 工程废浆处理过程中药剂真空预压法的防淤堵机理[J]. 土木工程学报，2017，50(6)：95-103.(WU Yajun，NIU Kun，LU Yitian，et al. Anti-clogging mechanism of vacuum preloading with flocculation in treating construction waste slurry[J]. China Civil Engineering Journal，2017，50(6)：95-103.(in Chinese))
[18]	武亚军，周振，陆逸天，等. pH值对工程废浆稳定、絮凝及固结特性的影响[J]. 土木工程学报，2018，51(9)：92-101.(WU Yajun，ZHOU Zhen，LU Yitian，et al. Effects of pH value on stability，flocculation and consolidation characteristics of waste slurry[J]. China Civil Engineering Journal，2018，51(9)：92-101.(in Chinese))
[19]	武亚军，牛坤，唐海峰，等. 药剂真空预压法处理工程废浆中生石灰的增渗作用[J]. 岩土力学，2017，38(12)：3 453-3 461.(WU Yajun，NIU Kun，TANG Haifeng，et al. Enhanced permeability of calcium lime in construction waste slurry improvement by vacuum preloading with flocculation[J]. Rock and Soil Mechanics，2017，38(12)：3 453-3 461.(in Chinese))
[20]	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)：1 291-1 296.(ZHAO Sen，ZENG Fangjin，WANG Jun，et al. Experimental study of flocculation combined with vacuum preloading to reinforce silt foundation[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(6)：1 291-1 296.(in Chinese))
[21]	胡挺，武亚军，徐方. 氢氧化钙与聚丙烯酰胺对高含水率泥浆固结的影响[J]. 长江科学院院报，2018，35(8)：95-101.(HU Ting，WU Yajun，XU Fang，et al. Effects of calcium hydroxide and polyacrylamide on the consolidation of high moisture content mud[J]. Journal of Yangtze River Scientific Research Institute，2018，35(8)：95-101.(in Chinese))
[22]	蒲诃夫，潘友富，KHOTEJA Dibangar，等. 絮凝-水平真空两段式脱水法处理高含水率疏浚淤泥模型试验研究[J]. 岩土力学，2020，41(5)：1 502-1 509.(PU Hefu，PAN Youfu，KHOTEJA Dibangar，et al. Model test on dewatering of high-water-content dredged slurry by flocculation-horizontal vacuum two-staged method[J]. Rock and Soil Mechanics，2020，41(5)：1 502-1 509.(in Chinese))
[23]	蔡袁强. 吹填淤泥真空预压固结机理与排水体防淤堵处理技术[J]. 岩土工程学报，2021，43(2)：201-225.(CAI Yuanqiang. Consolidation mechanism of vacuum preloading for dredged slurry and anti-clogging method for drains[J]. Chinese Journal of Geotechnical Engineering，2021，43(2)：201-225.(in Chinese))
[24]	LIU J J，LEI H Y，ZHENG G，et al. Laboratory model study of newly deposited dredger fills using improved multiple-vacuum preloading technique[J]. Journal of Rock Mechanics and Geotechnical Engineering，2017，9(5)：924-935.
[25]	黄新，周国钧. 水泥加固土硬化机理初探[J]. 岩土工程学报，1994，16(1)：62-68.(HUANG Xin，ZHOU Guojun. Hardening mechanism of cement-stability soil[J]. Chinese Journal of Geotechnical Engineering，1994，16(1)：62-68.(in Chinese))
[26]	朱建才，温晓贵，龚晓南. 真空排水预压加固软基中的孔隙水压力消散规律[J]. 水利学报，2004，(8)：123-128.(ZHU Jiancai，WEN Xiaogui，GONG Xiaonan. Dissipation of pore water pressure in soft foundation reinforced by vacuum drainage preloading[J]. Journal of Hydraulic Engineering，2004，(8)：123-128.(in Chinese))
[27]	CHU J，YAN S W. Estimation of degree of consolidation for vacuum preloading projects[J]. International Journal of Geomechanics，ASCE，2005，5(2)，158-165.
[28]	CAI Y Q，XIE Z W，WANG J，et al. New approach of vacuum preloading with booster prefabricated vertical drains(PVDs) to improve deep marine clay strata[J]. Canadian Geotechnical Journal，2018，55(10)：1 359-1 371.
[29]	中华人民共和国行业标准编写组. JTS 147-1—2010 港口工程地基规范[S]. 北京：中国建筑工业出版社，2010.(The Professional Standard Compilation Groups of People?s Republic of China. JTS 147-1—2010 Foundation specifications for port engineering[S]. Beijing：China Construction Industry Press，2010.(in Chinese))