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湿润气候区带膨润土垫ET封顶的性能分析 被引量:1

Analyses on performance of evapotranspiration cover with GCL in humid region
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摘要 ET(evapotranspiration,腾发)封顶目前主要用于少雨地区的填埋场,本文考虑1500mm的年降雨量,分析一种加膨润土垫(GCL)的新型土工复合ET封顶在湿润地区的工作性能。建立渗流-腾发耦合模型,计算此新型ET封顶和典型单层土ET封顶的地表径流量、地表蒸发量、植被蒸腾量、最终透水量,对比分析两种ET封顶内的水分运移规律及其工作性能。结果表明:新型ET封顶产生的地表径流总量多于典型单层土ET封顶;新型ET封顶通过膨润土垫的低渗透性使上部土层能够储存更多的水分用于后期腾发,其腾发量大于典型单层土ET封顶,尤其是在降雨高峰期更为明显;在该地区,总厚度1.2m的典型单层土ET封顶并不能有效阻止水分渗透到填埋场中,而新型ET封顶能够满足设计要求。 ET(evapotranspiration,腾发)封顶目前主要用于少雨地区的填埋场,本文考虑1500mm的年降雨量,分析一种加膨润土垫(GCL)的新型土工复合ET封顶在湿润地区的工作性能。建立渗流-腾发耦合模型,计算此新型ET封顶和典型单层土ET封顶的地表径流量、地表蒸发量、植被蒸腾量、最终透水量,对比分析两种ET封顶内的水分运移规律及其工作性能。结果表明:新型ET封顶产生的地表径流总量多于典型单层土ET封顶;新型ET封顶通过膨润土垫的低渗透性使上部土层能够储存更多的水分用于后期腾发,其腾发量大于典型单层土ET封顶,尤其是在降雨高峰期更为明显;在该地区,总厚度1.2m的典型单层土ET封顶并不能有效阻止水分渗透到填埋场中,而新型ET封顶能够满足设计要求。
机构地区 上海大学
出处 《土木工程学报》 EI CSCD 北大核心 2011年第S2期190-193,共4页 China Civil Engineering Journal
基金 国家自然科学基金(50908140) 上海大学研究生创新基金(SHUCX112339)
关键词 ET封顶 膨润土垫 腾发作用 性能分析 ET cover GCL Evapotranspiration performance evaluation
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参考文献10

  • 1张文杰.填埋场腾发封顶系统中的水分运移分析[J].岩石力学与工程学报,2008,27(A02):3367-3373. 被引量:8
  • 2李志斌,徐超.竖向应力作用下GCL的膨胀特性和渗透性能[J].岩土工程学报,2007,29(12):1876-1880. 被引量:12
  • 3McGuire P E,Andraski B J,Archibald R E.Case study ofa full-scale evapotranspiration cover. Journal ofGeotechnical and Geoenvironmental Engineering . 2009
  • 4Albright W H,Benson C H,Gee G W,et al.Field waterbalance of landfill final covers. Journal ofEnvironmental Quality . 2004
  • 5Sun J L,Yuen S T S,Fourie A B.The effect of using ageotextile in a monolithic (evapotranspiration)alternativelandfill cover on the resulting water balance. WasteManagement . 2010
  • 6Khire M V,Benson C H,Bosseher P J.Water balancemodeling of earthen final covers. Journal ofGeotechnical and Geoenvironmental Engineering . 1997
  • 7Van Genuchten R.Closed-form equation for predicting thehydraulic conductivity of unsaturated soils. Soil ScienceSociety of America Journal . 1980
  • 8DWYER S F.Water balance measurements and computer simulations of landfill covers. . 2003
  • 9KAVAZANJIAN E J,BETH A G,TARIK H H.Unsaturated flow flux assessment for evapotranspiration cover compliance. The 4th International Conference on Unsaturated Soils . 2006
  • 10Roesler A C,Benson C H,Albright W H.Field Hydrology and Model Predictions for Final Covers in the Alternative Assessment Program-2002. Geo-Engineering Report No.02-08, University of Wisconsin, Madison, WI . 2002

二级参考文献24

  • 1LAGATTA M B, BOARDMAN B T, COOLEY B H, et al. Geosynthetic clay liners subjected to differential settlement[J]. Journal of Geotechnical and Geoenvironmental Engineering, 1997, 123(5): 402 - 410.
  • 2RUHL J L, DANIEL D E. Geosynthetic clay liners permeated with chemical solutions and leachates[J]. Journal of Geotechnical and Geoenvironmental Engineering, 1997, 124(4): 369 - 381.
  • 3PETROV R J, ROWE R K, QUILEY R M. Selected factors influencing GCL hydraulic conductivity[J]. Journal of Geotechnical and Geoenvironmental Engineering, 1997, 123(8): 683 - 695.
  • 4PETROV R J, ROWE R K. Geosynthetic clay liner (GCL)-chemical compatibility by hydraulic conductivity testing and factors impacting its performance[J]. Canadian Geotechnical Journal, 1997, 34:863 - 885.
  • 5LAKE C B, ROWE R K. Swelling characteristics of needlepunched, thermally treated geosynthefic clay liners[J]. Geotexfiles and Geomembranes, 2000, 18:77 - 101.
  • 6D6766 Standard test method for evaluation of hydraulic properties of geosynthetic clay liners permeated with potentially incompatible liquids[S]. Philadelphia, 2002.
  • 7DYWER S F. Alternative landfill covers pass the test[J]. Civil Engineering, ASCE, 1998, 12(1): 50- 52.
  • 8Environmental Protection Agency, US. Evapotranspiration landfill cover systems fact sheet[R]. [S. l.]: Environmental Protection Agency, US, 2003.
  • 9WEAND H V, GILL M. Natural covers for landfill and buried waste[J].JournalofEnvironmentalEngineering, 2001, 127(9) 768 - 775.
  • 10BENSON C, ABICHOU T, ALBRIGHT W, et al. Field evaluation of alternative earthen final covers[J]. International Journal of Phytoremediation, 2001, 3(1): 105- 127

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