[1]王山,梁广雪,陈先勇,等.真空预压处理高含水率疏浚泥室内足尺大模型试验研究[J].江苏水利,2022,(12):1-6,12.
 WANG Shan,LIANG Guangxue,CHEN Xianyong,et al.Full-scale model test on dredged clay at high water content treated by vacuum preloading[J].JIANGSU WATER RESOURCES,2022,(12):1-6,12.
点击复制

真空预压处理高含水率疏浚泥室内足尺大模型试验研究()
分享到:

《江苏水利》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2022年12期
页码:
1-6,12
栏目:
水利工程建设
出版日期:
2022-12-01

文章信息/Info

Title:
Full-scale model test on dredged clay at high water content treated by vacuum preloading
文章编号:
1007-7839(2022)12-0001-0006
作者:
王山1梁广雪1陈先勇2宋苗苗3姚达4
(1. 江苏禹衡工程质量检测有限公司,江苏 盐城 224000;2. 江苏省盐城水利建设有限公司,江苏 盐城 224014;3. 盐城工学院土木工程学院,江苏 盐城 224051;4. 江苏省工程勘测研究院有限责任公司,江苏 扬州 225000)
Author(s):
WANG Shan1 LIANG Guangxue1 CHEN Xianyong2 SONG Miaomiao3 YAO Da4
(1. Jiangsu Yuheng Engineering Quality Testing Co., Ltd., Yancheng 224000, China;2. Jiangsu Yancheng Water Conservancy Construction Co., Ltd., Yancheng 224014, China;3. School of Civil Engineering, Yancheng Institute of Technology, Yancheng 224051, China;4. Jiangsu Province Engineering Investigation and Research Institute Co., Ltd., Yangzhou 225000, China)
关键词:
疏浚泥真空预压高含水率塑料排水板足尺大模型试验
Keywords:
dredged clay vacuum preload high water content plastic drainage board full-scale model test
分类号:
TV851
文献标志码:
A
摘要:
采用真空预压法处理高含水率疏浚泥时,处理过程中疏浚泥将产生大幅度沉降,不可避免地将引起塑料排水板的弯曲,从而影响疏浚泥加固效果。为进一步明确塑料排水板弯曲对真空预压处理疏浚泥加固效果的影响,对塑料排水板联合真空预压处理高含水率疏浚泥开展了室内足尺大模型试验。结果表明:真空预压过程中塑料排水板将产生弯折型弯曲和非弯折型弯曲,且弯折型弯曲出现的位置随真空预压时间的增加逐渐向塑料排水板下部移动。弯折型弯曲的出现将引起排水板不同深度处真空度的较大幅度降低,且深度的真空度降低幅度大于浅部,可达到30%。同时,排水板中第一个弯折型弯曲的出现还将引起疏浚泥泥面沉降量增加幅度的降低,和处理后疏浚泥含水率随深度增加幅度的增大。
Abstract:
For dredged clay treated by the vacuum preloading at high water content, the bending deformation is observed in the plastic drainage board due to the large consolidation settlement of dredged clay, which would weaken the reinforcement effect. In order to further clarify the influence of plastic drainage board bending on the reinforcement effect of vacuum preloading treatment of dredged clay, an indoor full-scale large model test was conducted on plastic drainage board combined with vacuum preloading treatment of dredged clay with high water content. The results show that there are bending curve and non-bending curve in the plastic board during the process of vacuum preloading, and the bending curve would appear gradually to the lower part of plastic drainage board as the vacuum preloading continues. The appearance of bending type bending will cause a greater reduction of vacuum at different depths of the drainage board, and the reduction of vacuum at depth is greater than that at shallow parts, which can reach 30%. Meanwhile, when the first bending curve appeared, the increase in the surface settlement of dredged clay with preloading time begin to decrease, and the increase in the water content with depth for treated dredged clay appears to increase.

参考文献/References:

[1]李明东,潘耀森,郎钞棚,等. 真空预压法处理吹填超软地基10a进展及展望[J]. 科学技术与工程,2020,20(1):15-22.
[2]XU G Z,GAO Y F,HONG Z S,et al. Sedimentation behavior of four dredged slurries in China[J]. Marine Georesources & Getotchnology,2012,30(2):143-156.
[3]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.
[4]刘金龙,栾茂田,汪东林,等. 土工织物与塑料排水板联合处理软基的效果分析[J]. 岩土力学,2009,30(6):1726-1730.
[5]YAN S W,CHU J. Soil improved for a storage yard using the combined vacuum and fill preloading method[J]. Canadian Geotechnical Journal,2005,42(4):1094-1104.
[6]郑爱荣,尹自强,王世宁. 软基加固后塑料排水板性能研究[J]. 中国港湾建设,2019,39(4):33-36.
[7]王婧,苏林王,李涛. 塑料排水板弯曲通水量对比试验研究[J]. 长江科学院院报,2017,34(2):17-22,40.
[8]孙立强,闫澎旺,李伟,等. 超软土真空预压室内模型试验研究[J]. 岩土力学,2011,32(4):984-990.
[9]朱群峰,高长胜,占鑫杰,等. 考虑板土相互作用的排水板通水特性试验研究[J]. 岩土工程学报,2017,39(12):2158-2164.
[10]俞炯奇,孙伯永. 长期在地下工作后的塑料排水板的性能研究[J]. 水利学报,2017(S1):711-715.
[11]应舒,陈平山. 真空预压法中塑料排水板弯曲对固结的影响[J]. 岩石力学与工程学报,2011,30(S2):3633-3640.
[12]宋苗苗,王正宏,徐桂中,等. 钙质絮凝剂对高含水率吹填淤泥自重沉积特性的影响[J]. 水利水电科技进展,2021,41(5):22-27.
[13]朱建才. 真空联合堆载预压加固软基机理及工艺研究[D]. 杭州:浙江大学,2003.
[14]朱群峰,高长胜,杨守华,等. 超软淤泥地基处理中真空度传递特性研究[J]. 岩土工程学报,2010,32(9):1429-1433.
[15]李波,程文亮,项存平,等. 大面积堆载预压处理深厚软基工后沉降预测研究[J]. 岩土工程学报,2021,43(S2):162-165.
[16]唐彤芝,董江平,黄家青,等. 薄砂层长短板结合真空预压法处理吹填淤泥土试验研究[J]. 岩土工程学报,2012,34(5):899-905.
[17]张崇旗,丁建文,万星,等. 真空联合堆载预压加固长江漫滩相软基孔压测试分析[J]. 防治减灾工程学报,2019,39(6):954-960.
[18]孙宏磊,陆逸,潘晓东,等. 真空预压作用下初始含水率对疏浚淤泥固结应用研究[J]. 岩土力学,2021,42(11):3029-3040.
[19]刘志中,丁建文,王刚,等. 考虑真空度衰减的真空预压沉降计算方法[J]. 东南大学学报(自然科学版),2016,46(1):191-195.
[20]夏玉斌,陈允进. 直排式真空预压法加固软土地基的试验与研究[J]. 工程地质学报,2010,18(3):376-384.
[21]曹玉鹏,孙宗军,丁建文,等. 高含水率疏浚泥轴对称大应变固结模型[J]. 岩土工程学报,2016,38(10):1904-1910.

相似文献/References:

[1]龚丽飞,朱玲.真空预压处理新近吹填淤泥土设计与施工要点浅析[J].江苏水利,2015,(10):31.
[2]龚丽飞,朱玲.真空预压处理新近吹填淤泥土设计与施工要点浅析[J].江苏水利,2015,(11):31.
[3]宗 姗.淮河入江水道运河西堤崇湾段变真空预压排水固结技术试验研究[J].江苏水利,2016,(04):10.
 ZONG Shan.Experimental study on drainage consolidation technology with variable vacuum preloading at Chongwan section of Huaihe-into-Yangtze River watercourse[J].JIANGSU WATER RESOURCES,2016,(12):10.
[4]杨卫星,江季忠.南通市九圩港提水泵站工程 深基坑开挖及降水施工分析与探讨[J].江苏水利,2016,(07):5.
 YANG Weixing,JIANG Jizhong.Analysis and discussion on deep foundation pit excavation and dewatering construction of Jiuweigang pumping station project in Nantong[J].JIANGSU WATER RESOURCES,2016,(12):5.
[5]王南江,冯英,翁佳兴,等.微劈裂管路真空预压法加固深淤土地基应用研究[J].江苏水利,2016,(09):1.
 WANG Nanjiang,FENG Ying,WENG Jiaxing,et al.Application research of micro split pipeline vacuum preloading method in reinforcing deep silt soil foundation[J].JIANGSU WATER RESOURCES,2016,(12):1.
[6]冯哲源,陶小玉,徐桂中,等.稻秸秆绳排水体真空固结处理高含水率疏浚淤泥可行性研究[J].江苏水利,2020,(07):56.
 FENG Zheyuan,TAO Xiaoyu,XU Guizhong,et al.Feasibility study on dredged silt with high moisture content treated by vacuum consolidation of straw rope drainage water body[J].JIANGSU WATER RESOURCES,2020,(12):56.

备注/Memo

备注/Memo:
收稿日期:2022-06-16
基金项目:国家自然科学基金项目(52008363);江苏省产学研合作项目(BY2021499);江苏省水利科技项目(2020018)
作者简介:王山(1973—),男,高级工程师,本科,主要从事疏浚泥处置及资源化利用等方面的研究。E-mail:1340973716@qq.com
通信作者:宋苗苗(1987—),女,讲师,博士研究生,主要从事疏浚泥处置及资源化利用等方面的研究。E-mail:songmiaomiao12@126.com
更新日期/Last Update: 2022-12-25