水利水电技术2018，Vol.49Issue(1)：156-160,5.DOI:10.13928/j.cnki.wrahe.2018.01.023
红土坝坡内置光纤土工膜抗震试验
Seismic experiment of laterite dam slope with built-in optical fiber geomembrane
摘要
Abstract
In order to study the seismic behavior of the interface between the built-in optical fiber geomembrane and soil,an experiment is designed in accordance with the relevant regulation,while a comparative analysis on its result is made with that from the composite geomembrane.The degrees of the impacts from all the vibration parameters on landslide are explored by vibrating table with variable slope model,while the adaptability of the geomembrane-soil interface to earthquake is discussed as well.Moreover,the destructive vibration experiments are made for three kinds of dam slope models,from which both the size and the change of the position of landslide under the joint-effect of seepage and earthquake are quantitatively analyzed.The result shows that among the seismic parameters,the intensity is the primary factor to cause the slide of the geomembrane-soil interface,while the shallow soil layer of dam slope is more prone to instability under seismic damage,and then makes a continuous landslide of the inner layer rock and soil mass due to the loss of the cover-weight therein.Under various working conditions of the variation of vibrating parameter,the seismic behavior of the dam slope with the built-in optical fiber geomembrane is obviously enhanced,and that all the bearing capacities of the sliding angles of the built-in optical fiber geomembrane for seismic intensity are slightly larger than those from the built-in composite geomembrane.Therefore,the optical fiber geomembrane cannot cause the decrease of the seismic behavior of the laterite dam slope,thus the seismic safety of the dam slope that taking the optical fiber geomembrane as its built-in anti-seepage blanket can meet the requirement from the relevant specification.关键词
防渗材料/光纤土工膜/红土坝坡/抗震试验Key words
anti-seepage material/optical fiber geomembrane/laterite dam slope/seismic experiment分类
建筑与水利引用本文复制引用
杨华舒,陈安,董卫..红土坝坡内置光纤土工膜抗震试验[J].水利水电技术,2018,49(1):156-160,5.基金项目
国家自然科学基金项目(41462013,50869003,51069003) （41462013,50869003,51069003）
云南省教育厅科学研究基金项目(2015Y072) （2015Y072）
