高速远程滑坡热-水-力耦合效应与沿程侵蚀研究

Research of High-Speed Landslide Thermo-Poro-Elastic Effect and Its Impact on the Landslide Erosion

作者：刘威(中国科学院山地灾害与地表过程重点实验室;中国科学院水利部成都山地灾害与环境研究所;中国科学院大学)；何思明(中国科学院山地灾害与地表过程重点实验室;中国科学院水利部成都山地灾害与环境研究所;中国科学院青藏高原卓越中心)；吴清(西安中交土木科技有限公司)

Author：LiuWei(KeyLab.ofMountainHazardsandSurfaceProcess,ChineseAcademyofSci.;Inst.ofMountainHazardsandEnvironment(IMHE),ChineseAcademyofSciences;Univ.ofChineseAcademyofSciences)；HeSiming(KeyLab.ofMountainHazardsandSurfaceProcess,ChineseAcademyofSci.;Inst.ofMountainHazardsandEnvironment(IMHE),ChineseAcademyofSciences;CAS Center for Excellence in Tibetan Plateau Earth Sciences)；WuQing(CCCCCivilEng.Sci.&Technol.Co.,Ltd.)

收稿日期：2015-01-06 年卷（期）页码：2015,47(5):54-59

期刊名称：工程科学与技术

Journal Name：Advanced Engineering Sciences

关键字：高速远程滑坡；热-水-力效应；沿程侵蚀；数值模拟

Key words：high-speedlandslide;thermo-poro-elasticeffect;erosion;numericalsimulation

基金项目：岩崩灾害颗粒分选机理与易损性定量评价资助项目(41472325)；国家自然科学基金资助项目(41272346;41502297)

中文摘要

为研究高速滑坡超强流动性及沿程侵蚀问题，在Goren热-水-力耦合模型的基础上结合滑坡侵蚀率公式，构建了考虑沿程侵蚀影响的1维高速远程滑坡热-水-力耦合物理模型，提出了有限体积法隐式格式与TDMA耦合算法，对高速滑坡运动热水力耦效应及侵蚀效应进行数值模拟。结果表明：高速滑坡运动过程中热水力耦合效应提升了滑坡的流动性并显著影响滑坡的沿程侵蚀作用。

英文摘要

In order to study the high mobility behavior and erosion effect of landslide,the erosion formula was combined with thermo-poro-elastic model to construct the one-dimension long-range landslide model.The coupling numerical method based on the implicit scheme of finite volume method and TDMA algorithm was proposed to simulate the thermo-poro-elastic effect and erosion effect during the movement process of landslide.Numerical results indicated that the thermo-poro-elastic effect enhanced the landslide mobility and affected landslide erosion significantly.

【关闭】

论文摘要

高速远程滑坡热-水-力耦合效应与沿程侵蚀研究

Research of High-Speed Landslide Thermo-Poro-Elastic Effect and Its Impact on the Landslide Erosion