淤泥固化土破碎重塑后的强度变形特性试验研究

doi:10.3724/1000-6915.jrme.2024.0305

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (3617 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要为明确淤泥固化土破碎重塑后的强度损失及后期强度恢复特性，通过开展无侧限抗压强度试验，研究固化剂掺量、淤泥初始含水率、前养护龄期、二次固化方式、破碎程度以及后养护龄期对重塑土强度变形特性的影响，并与常规固化土进行对比分析。结果表明：当固化土的强度大于600 kPa，初期重塑土的强度趋于稳定；缩短前养护龄期、增加固化剂掺量均有利于重塑土后期强度的恢复，重塑土的最终强度可恢复到固化土强度的40%～70%；固化剂总掺量相同时，二次固化重塑土的强度总体上小于一次固化重塑土，且第1次的掺量越高，强度降低越明显；高强破碎后的二次固化重塑土初期强度小于正常破碎二次固化重塑土，但后期强度随第2次固化剂掺量的增加而增长，且有可能大于正常破碎二次固化重塑土；重塑土的抗压强度小于200 kPa时，破坏应变随着强度的增大而减小，当强度大于200 kPa，破坏应变与固化土接近，在1%～2%范围；重塑土和固化土变形模量与抗压强度之间的关系基本呈相同的线性关系，即E50 = 73.8qu。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	王柳江1
	臧耀辉1
	江后根1
	崔红斌2
	赵旸3

关键词 ：土力学, 淤泥固化土, 破碎, 重塑土, 强度损失, 强度恢复

Abstract：In order to investigate the strength loss and strength recovery characteristics of the sludge solidified soil after crushing and remodeling，a series of unconfined compressive strength(UCS) tests were conducted. The effects of curing agent content，initial water content of sludge，pre-curing age，two-stage solidification method，crushing degree and post-curing age on the strength and deformation characteristics of the remodeled solidified soil(RSS) were studied. In addition，the comparative analysis was carried out with that of solidified soil. The results show that the strength of the initial RSS tends to be stable as the strength of the solidified soil is greater than 600 kPa. Shortening the pre-curing age and increasing the amount of curing agent are conducive to the recovery of the strength of the RSS in the later stage，and the final strength of the RSS can be restored to 40%–70% of the strength of the solidified soil. For the two-stage solidified RSS，the strength is generally smaller than that of one-stage solidified RSS when the total amount of curing agent kept the same，and the higher the agent content used in the first stage solidification，the more obvious the strength decrease. For the influence of crushing degree，the initial strength of the two-stage solidified RSS after strong crushing is less than that of the normal crushing，but the later strength increases with the increase of the agent content used in the second stage solidification，and even be greater than that of the later strength after normal crushing. For the relationship between UCS and failure strain of the RSS，the failure strain decreases with the increase of strength as the UCS of the RSS is less than 200 kPa. As the UCS of the RSS is greater than 200 kPa，the failure strain is close to that of the solidified soil between 1%–2%. Finally，the relationship between the deformation modulus and the compressive strength of RSS and solidified soil is basically the same，which agrees linear relationship of E50 = 73.8qu.

Key words： soil mechanics sludge solidified soil crushing remodeled solidified soil strength loss strength recovery

引用本文:

王柳江1，臧耀辉1，江后根1，崔红斌2，赵旸3. 淤泥固化土破碎重塑后的强度变形特性试验研究[J]. 岩石力学与工程学报, 2025, 44(1): 197-208.
WANG Liujiang1，ZANG Yaohui1，JIANG Hougen1，CUI Hongbin2，ZHAO Yang3. Experimental study on the strength and deformation characteristics of sludge solidified soil after crushing and remodeling. , 2025, 44(1): 197-208.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.3724/1000-6915.jrme.2024.0305 或 https://rockmech.whrsm.ac.cn/CN/Y2025/V44/I1/197

[1]	黄英豪，戴济群. 我国疏浚淤泥处置与利用研究进展[J]. 中国水利，2024，(3)：25-28.(HUANG Yinghao，DAI Jiqun. Research progress on disposal and utilization of dredged sediment in China[J]. China Water Resources，2024，(3)：25-28.(in Chinese))
[2]	宋丁豹，蒲诃夫，胡海蓝，等. 水平排水板真空预压-碱激发矿渣固化联合法处理高含水率淤泥的试验研究[J]. 岩石力学与工程学报，2023，42(12)：3 109-3 119.(SONG Dingbao，PU Kefu，HU Hailan，et al. Experimental investigation on prefabricated horizontal drain-based vacuum preloading-alkali-activated GGBS solidification combined method for treatment of high-water-content mud slurry[J]. Chinese Journal of Rock Mechanics and Engineering，2023，42(12)：3 109-3 119.(in Chinese))
[3]	朱伟，闵凡路，吕一彦，等. “泥科学与应用技术”的提出及研究进展[J]. 岩土力学，2013，34(11)：3 041-3 054.(ZHU Wei，MIN Fanlu，LV Yiyan，et al. Subject of “mud science and application technology” and its research progress[J]. Rock and Soil Mechanics，2013，34(11)：3 041-3 054.(in Chinese))
[4]	陈萌，杨国录，徐峰，等. 淤泥固化处理研究进展[J]. 南水北调与水利科技，2018，16(5)：128-138.(CHEN Meng，YANG Guolu，XU Feng，et al. Research progress on solidification treatment of dredged silt[J]. South-to-North Water Transfers and Water Science and Technology，2018，16(5)：128-138.(in Chinese))
[5]	PU S，ZHU Z，WANG H，et al. Mechanical characteristics and water stability of silt solidified by incorporating lime，lime and cement mixture，and SEU-2 binder[J]. Construction and Building Materials，2019，214：111-120.
[6]	张春雷，管非凡，李磊，等. 中国疏浚淤泥的处理处置及资源化利用进展[J]. 环境工程，2014，32(12)：95-99.(ZHANG Chunlei，GUAN Feifan，LI Lei，et al. The progress in the reutilization treatment and disposal of dredged sediments in China[J]. Environmental Engineering，2014，32(12)：95-99.(in Chinese))
[7]	何俊，张驰，管家贤，等. 碱渣固化疏浚淤泥的动变形特性研究[J]. 岩石力学与工程学报，2023，42(增1)：3 712-3 721.(HE Jun，ZHAG Chi，GUAN Jiaxian，et al. Dynamic deformation for dredged soil solidified with soda residue[J]. Chinese Journal of Rock Mechanics and Engineering，2023，42(Supp.1)：3 712-3 721.(in Chinese))
[8]	骆嘉成，邵吉成，袁波，等. 分层加固法对温州淤泥类渣土加固的现场试验研究[J]. 岩石力学与工程学报，2021，40(增2)：3 483-3 492.(LUO Jiacheng，SHAO Jicheng，YUAN Bo，et al. Study of field test on reforcement of Wenzhou sludge by layered reinforcement method[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(Supp.2)：3 483-3 492.(in Chinese))
[9]	TANG Y X，MIYAZAKI Y，TSUCHIDA T. Practices of reused dredgings by cement treatment[J]. Soils and Foundations，2001，41(5)：129-143.
[10]	顾欢达，陈甦. 河道淤泥的流动化处理及其工程性质的试验研究[J]. 岩土工程学报，2002，24(1)：108-111.(GU Huanda，CHEN Su. Engineering properties of river sludge and its stabilization[J]. Chinese Journal of Geotechnical Engineering，2002，24(1)：108-111.(in Chinese))
[11]	桂跃，高玉峰，李振山，等. 高含水率疏浚淤泥材料化土击实时机选择研究[J]. 地下空间与工程学报，2010，6(5)：1 072-1 076. (GUI Yue，GAO Yufeng，LI Zhenshan，et al. Study on the compaction timing of the quicklime-stabilized dredged sediment of high-water-content[J]. Chinese Journal of Underground Space and Engineering，2010，6(5)：1 072-1 076.(in Chinese))
[12]	桂跃，余志华，刘海明，等. 滇池固化淤泥重塑土的重塑时机及强度恢复特性试验[J]. 吉林大学学报：地球科学版，2014，44(6)：1 928-1 935.(GUI Yue，YU Zhihua，LIU Haiming，et al. Suitable compaction moment and strength recovery properties of remodeled stabilized dredged soil from Dianchi Lake[J]. Journal of Jilin University：Earth Science，2014，44(6)：1 928-1 935.(in Chinese))
[13]	陈龙，陈永辉，李德晟，等. 明挖隧道固化土的重塑及重金属浸出特性研究[J]. 中国公路学报，2023，36(11)：335-344.(CHEN Long，CHEN Yonghui，LI Desheng，et al. Remolding and heavy metal leaching properties of solidified soil in open-cut tunnel construction[J]. China Journal of Highway and Transport，2023，36(11)：335-344.(in Chinese))
[14]	黄英豪，董婵，关云飞，等. 击实对固化淤泥物理力学性质的影响[J]. 岩土工程学报，2012，34(9)：1 728-1 733.(HUANG Yinghao，DONG Chan，GUAN Yunfei，et al. Effect of compaction on physical and mechanical properties of solidified dredged materials[J]. Chinese Journal of Geotechnical Engineering，2012，34(9)：1 728-1 733.(in Chinese))
[15]	SATO A，HATAKEYAMA O. Influence of preparation conditions on solidified-crushed soil characteristics and strength[J]. Geomate Journal，2021，20(79)：48-55.
[16]	佐藤厚子，西本聪，铃木辉之. 固化破砕土の强度特性[R]. 北海道：第2回日中地盘シンポジウム，2005.(in Japanese)
[17]	ZHU W，HUANG Y，ZHANG C，et al. Effect of curing time on mechanical behavior of crushed solidified dredged material[C]// GeoCongress 2008：Characterization，Monitoring，and Modeling of GeoSystems. [S. l. ]：[s. n. ]，2008：597-604.
[18]	HUANG Y，ZHU W，QIAN X，et al. Change of mechanical behavior between solidified and remolded solidified dredged materials[J]. Engineering Geology，2011，119(3/4)：112-119.
[19]	黄英豪，朱伟，张春雷，等. 固化淤泥重塑土力学性质及其强度来源[J]. 岩土力学，2009，30(5)：1 352-1 356.(HUANG Yinghao，ZHU Wei，ZHANG Chunlei，et al. Mechanical characteristics and strength source of remolded solidified dredged material[J]. Rock and Soil Mechanics，2009，30(5)：1 352-1 356.(in Chinese))
[20]	范昭平，朱伟，张春雷. 有机质含量对淤泥固化效果影响的试验研究[J]. 岩土力学，2005，26(8)：1 327-1 330.(FAN Zhaoping，ZHU Wei，ZHANG Chunlei. Experimental study on influence of organic matter content on solidified dredging[J]. Rock and Soil Mechanics，2005，26(8)：1 327-1 330.(in Chinese))
[21]	谢定义，齐吉琳，朱元林. 土的结构性参数及其与变形强度的关系[J]. 水利学报，1999，(10)：1-6.(XIE Dingyi，QI Jilin，ZHU Yuanlim. Soil structure parameter and its relations to deformation and strength[J]. Journal of Hydraulic Engineering，1999，(10)：1-6.(in Chinese))
[22]	陈鑫，俞峰，洪哲明，等. 新型GS固化土与水泥土的力学特性对比研究[J]. 工程地质学报，2022，30(4)：1 111-1 121.(CHEN Xin，YU Feng，HONG Zheming，et al. A comparable study on mechanical properties of soils stabilized by GS agent and cement[J]. Journal of Engineering Geology，2022，30(4)：1 111-1 121.(in Chinese))