[1]夏雄,谢献锟,仇宏勇,等.高密度聚乙烯(HDPE)土工膜覆盖层对垃圾填埋体中期稳定性影响分析[J].常州大学学报(自然科学版),2022,34(03):74-80.[doi:10.3969/j.issn.2095-0411.2022.03.010]
　XIA Xiong,XIE Xiankun,QIU Hongyong,et al.Analysis of the Effect of HDPE Geomembrane Cover Layer on the Medium-Term Stability of Landfill Body of Waste Soil[J].Journal of Changzhou University(Natural Science Edition),2022,34(03):74-80.[doi:10.3969/j.issn.2095-0411.2022.03.010]
点击复制

高密度聚乙烯(HDPE)土工膜覆盖层对垃圾填埋体中期稳定性影响分析()
分享到：

常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第34卷
期数:
2022年03期
页码:
74-80
栏目:
土木工程
出版日期:
2022-05-28

文章信息/Info

Title:
Analysis of the Effect of HDPE Geomembrane Cover Layer on the Medium-Term Stability of Landfill Body of Waste Soil
文章编号:
2095-0411(2022)03-0074-07
作者:
夏雄1; 谢献锟1; 仇宏勇1; 高兆国2
(1.常州大学环境与安全工程学院,江苏常州213164;2.江苏佰拓建设有限公司,江苏常州213164)
Author(s):
XIA Xiong1;  XIE Xiankun1;  QIU Hongyong1;  GAO Zhaoguo2
(1.School of Environmental & Safety Engineering, Changzhou University, Changzhou 213164, China; 2.Jiangsu Baituo Construction Co., Ltd., Changzhou 213164, China)
关键词:
HDPE土工膜;  界面抗剪强度;  填埋龄期;  安全系数
Keywords:
HDPE geomembrane;  interfacial shear strength;  age of landfill;  safety factor
分类号:
TU 413.6
DOI:
10.3969/j.issn.2095-0411.2022.03.010
文献标志码:
A
摘要:
城市垃圾填埋场在填埋和运营过程中,垃圾土的抗剪强度会随着填埋龄期的增长而改变,高密度聚乙烯(HDPE)土工膜作为现代卫生垃圾填埋场的中间覆盖层,其规格参数直接影响着垃圾填埋体的填埋中期稳定。文章对不同填埋龄期的垃圾土和不同类型HDPE土工膜进行界面剪切试验,得到土-膜界面抗剪强度参数,再结合数值模拟方法分析HDPE土工膜对分层垃圾填埋体稳定性的影响。结果表明:随着填埋龄期的增加,土-膜界面黏聚力呈现出总体下降的趋势,而界面内摩擦角呈现出总体上升的趋势,其中柱点式HDPE土工膜具有更高的界面抗剪强度; HDPE覆盖层起到了延缓上层滑移面的贯通,并阻断下方填埋体滑裂带的形成的作用; 布设HDPE土工膜能显著增强填埋体在填埋中期的整体稳定性。研究结果对垃圾填埋场设计及其安全性评价有重要的指导意义。
Abstract:
In the process of landfill and operation of municipal waste landfill, the shear strength of waste soil will change with the growth of landfill age. The specification parameters of HDPE geomembrane, the middle cover layer of modern sanitary waste landfill, its specification parameters directly affect the mid-term stability of landfill body. Conducting interface shear tests on waste soils of different landfill ages and different types of HDPE geomembranes to obtain soil-membrane interface shear strength parameters, this artical analyzes the influence of HDPE geomembranes on the stability of layered waste landfills by using numerical simulation methods. The results reveal that with the increase of landfill age, the cohesion of soil membrane interface shows an overall downward trend, while the friction angle of interface shows an overall upward trend. Among them, the cylindrical HDPE geomembrane has higher interfacial shear strength; HDPE overburden can delay the penetration of the upper slip surface and block the formation of the slip zone of the lower landfill body; laying HDPE geomembrane can significantly enhance the overall stability of landfill in the middle stage of landfill. The research results have important guiding significance for landfill design and safety evaluation.

参考文献/References:

[1]高登. 扩建垃圾填埋场中间衬垫变形与稳定性状及其工程控制措施[D]. 杭州: 浙江大学, 2009.
[2]钱学德, 施建勇, 刘晓东. 现代卫生填埋场的设计与施工[M]. 2版. 北京: 中国建筑工业出版社, 2011.
[3]周敬超. HDPE土工膜在城市生活垃圾卫生填埋场中的应用[J]. 水利水电科技进展, 2003, 23(3): 53-56.
[4]WANG Z P, LAN C L. Experimental study on the solidification and influence factors of MSW stabilized soil[J]. MATEC Web of Conferences, 2015, 31: 14001.
[5]ABREU A E S, VILAR O M. Influence of composition and degradation on the shear strength of municipal solid waste[J]. Waste Management, 2017, 68: 263-274.
[6]冯世进, 高丽亚, 王印. 垃圾填埋场边坡上土工膜的受力分析[J]. 岩土工程学报, 2008, 30(10): 1484-1489.
[7]吴维兴, 周露明, 谢兴华, 等. 高密度聚乙烯土工膜与固体废物界面接触强度的试验研究[J]. 济南大学学报(自然科学版), 2020, 34(1): 30-34.
[8]PUNETHA P, MOHANTY P, SAMANTA M. Microstructural investigation on mechanical behavior of soil-geosynthetic interface in direct shear test[J]. Geotextiles and Geomembranes, 2017, 45(3): 197-210.
[9]HOSSAIN M S, GABR M A, ASCE F. The effect of shredding and test apparatus size on compressibility and strength parameters of degraded municipal solid waste[J]. Waste Management, 2009, 29(9): 2417-2424.
[10]陈雪珍, 简文彬. 基于强度折减法的分步施工边坡稳定性分析[J]. 水利与建筑工程学报, 2018, 16(1): 207-210, 223.
[11]STARK T D, EID H T, EVANS W D, et al. Municipal solid waste slope failure. II: stability analyses[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2000, 126(5): 408-419.
[12]FILZ G M, ESTERHUIZEN J J B, DUNCAN J M. Progressive failure of lined waste impoundments[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2001, 127(10): 841-848.
[13]CHEN Y M, XU W J, LING D S, et al. A degradation-consolidation model for the stabilization behavior of landfilled municipal solid waste[J]. Computers and Geotechnics, 2020, 118: 103341.
[14]林伟岸. 复合衬垫系统剪力传递、强度特性及安全控制[D]. 杭州: 浙江大学, 2009.
[15]中华人民共和国住房和城乡建设部. 生活垃圾卫生填埋场岩土工程技术规范: CJJ 176—2012[S]. 北京: 中国建筑工业出版社, 2012.
[16]北京金土木软件技术有限公司. PLAXIS岩土工程软件使用指南[M]. 北京: 人民交通出版社, 2010.
[17]幸雪松, 周长所, 曹文科. 考虑岩石应变软化特征的井筒稳定性分析[J]. 常州大学学报(自然科学版), 2021, 33(6): 58-61.
[18]刘少峰, 刘云, 苏永华. 基于收敛-约束原理的岩质隧道初衬安全系数计算[J]. 常州大学学报(自然科学版), 2021, 33(1): 85-92.
[19]BOLTON M D. The strength and dilatancy of sands[J]. Géotechnique, 1987, 37(2): 219-226.

备注/Memo

备注/Memo:
收稿日期: 2021-12-13。
基金项目: 中国博士后科学基金资助项目(2021M703507); 江苏省产学研合作资助项目(BY2021208)。
作者简介: 夏雄(1972—), 男, 四川成都人, 博士, 副教授。E-mail: xiaxiong@cczu.edu.cn
更新日期/Last Update: 1900-01-01