

浏览全部资源
扫码关注微信
西南交通大学土木工程学院,四川 成都 610031
Received:03 January 2020,
Revised:2020-02-28,
Published:15 December 2020
移动端阅览
李小琴,富海鹰,张迎宾等.地形起伏对滑坡运动的影响规律研究[J].防灾减灾工程学报,2020,40(06):867-877.
LI Xiaoqin,FU Haiying,ZHANG Yingbin,et al.Study on the Influences of Topography on Landslide Mobility[J].Journal of Disaster Prevention and Mitigation Engineering,2020,40(06):867-877.
李小琴,富海鹰,张迎宾等.地形起伏对滑坡运动的影响规律研究[J].防灾减灾工程学报,2020,40(06):867-877. DOI: 10.13409/j.cnki.jdpme.2020.06.004.
LI Xiaoqin,FU Haiying,ZHANG Yingbin,et al.Study on the Influences of Topography on Landslide Mobility[J].Journal of Disaster Prevention and Mitigation Engineering,2020,40(06):867-877. DOI: 10.13409/j.cnki.jdpme.2020.06.004.
地形作为滑坡运动的重要约束条件,对滑坡运动行为及致损效应具有较大影响,研究其影响规律具有实际意义。通过分析地形对滑坡运动的作用机理,初步推导了考虑地形效应的雪橇模型,利用已有模型及试验结果验证其具有相当准确性,进而推导了地形引起的摩擦耗能增量
E
T
表达式。利用耗能增量
E
T
与总能量
E
G
的比值定义地形影响率
η
,作为地形影响程度的指标,对100个滑坡地形进行了计算分析。结果表明:(1)16%的滑坡地形影响率保持在20%以上,地形影响不可忽略;(2)局部地形为滑坡短时加减速创造了良好条件,对滑坡运动具有显著影响;(3)地形对近程滑坡的影响明显大于远程滑坡;(4)滑坡的地形缓急大致可以反映滑坡运动受地形影响的大小。建议对潜在下滑地形较平缓的不稳定坡体给予足够重视,且通过微小改变地形可能会大幅减小滑坡运动距离,以达到减灾目的。
Topography, as an important constraint condition on landslide movement, has great influences on the behavior and damage effect of landslide movement. Based on the analysis of the action mechanism of terrain on the landslide movement, the sled model considering the terrain effect was preliminarily derived. The existing model and test results showed that the new model is quite accurate. Then the expression of friction energy consumption increment
E
T
induced by terrain was derived. The ratio of energy consumption increment
E
T
to total energy
E
G
was used to define the terrain influence rate
η
. As an index of terrain influence degree, the ratio η of 100 landslides were calculated and analyzed. The results show that: 1) the topography influence rate for 16% of the total landslide is above 20%, which means the influence of topography cannot be ignored; 2) local topography creates good conditions for short-time acceleration and deceleration of landslide, which has a significant impact on landslide movement; 3) topography has a greater impact on short-distance landslide than on long-distance landslide; 4) the gradient of the topography can roughly reflect the influence of topography on landslide movement. It is suggested that enough attention should be paid to the unstable slope with gentle sliding terrain, and the sliding distance may be greatly reduced by changing the terrain slightly, so as to achieve the purpose of disaster reduction.
Gorum T , Van Westen C J , Korup O , et al . Complex rupture mechanism and topography control symmetry of mass-wasting pattern, 2010 Haiti earthquake [J]. Geomorphology , 2013 , 184 ( 15 ): 127 - 138 .
戴岚欣 , 许 强 , 范宣梅 , 等 . 2017年8月8日四川九寨沟地震诱发地质灾害空间分布规律及易发性评价初步研究 [J]. 工程地质学报 , 2017 , 25 ( 4 ): 1 151 - 1 164 .
Dai L X , Xu Q , Fan X M , et al . A preliminary study on spatial distribution patterns of landslides triggered by Jiuzhaigou earthquake in Sichuan on August 8th, 2017 and their susceptibility assessment [J]. Journal of Engineering Geology , 2017 , 25 ( 4 ): 1 151 - 1 164 . (in Chinese)
易树健 , 李渝生 , 黄 超 , 等 . 金沙江杀威台子滑坡成因动力学特性研究 [J]. 防灾减灾工程学报 , 2018 , 38 ( 2 ): 297 - 304 .
Yi Sh J , Li Y Sh , Huang Ch , et al . The genetic dynamic characteristics of the Jinsha river Shaweitaizi landslide [J]. Journal of Disaster Prevention and Mitigation Engineering , 2018 , 38 ( 2 ): 297 - 304 . (in Chinese)
艾 挥 , 吴红刚 , 冯文强 , 等 . 多滑动面滑坡变形破坏机理的振动台试验研究 [J]. 防灾减灾工程学报 , 2018 , 38 ( 1 ): 65 - 71 .
Ai H , Wu H G , Feng W Q , et al . Shaking table study on deformation and failure mechanism of landslide with multiple slip surface [J]. Journal of Disaster Prevention and Mitigation Engineering , 2018 , 38 ( 1 ): 65 - 71 . (in Chinese)
王玉峰 , 许 强 , 程谦恭 , 等 . 复杂三维地形条件下滑坡⁃碎屑流运动与堆积特征物理模拟实验研究 [J]. 岩石力学与工程学报 , 2016 , 35 ( 9 ): 1 776 - 1 791 .
Wang Y F , Xu Q , Cheng Q G , et al . Experimental study on the propagation and deposit features of rock avalanche along 3D complex topography [J]. Chinese Journal of Rock Mechanics and Engineering , 2016 , 35 ( 9 ): 1 776 - 1 791 . (in chinese)
樊晓一 , 田述军 , 段晓冬 , 等 . 地形因子对坡脚型地震滑坡运动参数的影响研究 [J]. 岩石力学与工程学报 , 2014 , 33 ( 增2 ): 4 056 - 4 066 .
Fan X Y , Tian Sh J , Duan X D , et al . Study of topography factors influence on motion parameters for seismic slope-toe landslides [J]. Chinese Journal of Rock Mechanics and Engineering , 2014 , 33 ( Sup 2 ): 4 056 - 4 066 . (in Chinese)
樊晓一 , 冷晓玉 , 段晓冬 . 坡脚型与偏转型地震滑坡运动距离及地形因素作用 [J]. 岩土力学 , 2015 , 36 ( 5 ): 1 380 - 1 388 .
Fan X Y , Leng X Y , Duan X D . Influence of topographical factors on movement distances of toe-type and turning-type landslides triggered by earthquake [J]. Rock and Soil Mechanics , 2015 , 36 ( 5 ): 1 380 - 1 388 . (in Chinese)
Devoli G , De Blasio F V , Elverhøi A , et al . Statistical analysis of landslide events in central America and their run-out distance [J]. Geotechnical and Geological Engineering , 2009 , 27 ( 1 ): 23 - 42 .
郝明辉 , 许 强 , 杨 磊 , 等 . 滑坡-碎屑流物理模型试验及运动机制探讨 [J]. 岩土力学 , 2014 , 35 ( 增1 ): 127 - 132 .
Hao M H , Xu Q , Yang L , et al . Physical modeling and movement mechanism of landslide-debris avalanches [J]. Rock and Soil Mechanics , 2014 , 35 ( Sup 1 ): 127 - 132 . (in Chinese)
Fan X Y , Tian S J , Zhang Y Y . Mass-front velocity of dry granular flows influenced by the angle of the slope to the runout plane and particle size gradation [J]. Journal of Mountain Science , 2016 , 13 ( 2 ): 234 - 245 .
杜 娟 , 殷坤龙 , 王佳佳 . 基于有限体积法的滑坡–碎屑流三维运动过程模拟分析 [J]. 岩石力学与工程学报 , 2015 , 34 ( 3 ): 480 - 488 .
Du J , Yin K L , Wang J J . Simulation of three-dimensional movement of landslide-debris flow based on finite volume method [J]. Chinese Journal of Rock Mechanics and Engineering , 2015 , 34 ( 3 ): 480 - 488 . (in Chinese)
Fleitout L , Froidevaux C . Tectonics and topography for a lithosphere containing density heterogeneities [J]. Tectonics , 1982 , 1 ( 1 ): 21 - 56 .
Koons P O . Three-dimensional critical wedges: Tectonics and topography in oblique collisional orogens [J]. Journal of Geophysical Research , 1994 , 99 ( B6 ): 12 301 .
Lucas A , Mangeney A , Ampuero J P . Frictional velocity-weakening in landslides on earth and on other planetary bodies [J]. Nature Communications , 2014 , 5 ( 9 ): 3 417 .
Manzella I , Labiouse V . Empirical and analytical analyses of laboratory granular flows to investigate rock avalanche propagation [J]. Landslides , 2013 , 10 ( 1 ): 23 - 36 .
Wang Y F , Cheng Q G , Shi A W , et al . Sedimentary deformation structures in the Nyixoi Chongco rock avalanche: implications on rock avalanche transport mechanisms [J]. Landslides , 2019 , 16 ( 3 ): 523 - 532 .
Gao Y , Yin Y , Li B , et al . Characteristics and numerical runout modeling of the heavy rainfall-induced catastrophic landslide⁃debris flow at Sanxicun, Dujiangyan, China, following the Wenchuan Ms 8.0 earthquake [J]. Landslides , 2017 , 14 ( 4 ): 1 361 - 1 374 .
Xing A G , Wang G , Yin Y P , et al . Dynamic analysis and field investigation of a fluidized landslide in Guanling, Guizhou, China [J]. Engineering Geology , 2014 , 181 : 1 - 14 .
Kang C , Chan D , Su F , et al . Runout and entrainment analysis of an extremely large rock avalanche—a case study of Yigong, Tibet, China [J]. Landslides , 2017 , 14 ( 1 ): 123 - 139 .
邬爱清 , 丁秀丽 , 李会中 , 等 . 非连续变形分析方法模拟千将坪滑坡启动与滑坡全过程 [J]. 岩石力学与工程学报 , 2006 , 25 ( 7 ): 1 297 - 1 303 .
Wu A Q , Ding X L , Li H Zh , et al . Numerical simulation of startup and whole failure process of Qianjiangping landslide using discontinuous deformation dnalysis method [J]. Chinese Journal of Rock Mechanics and Engineering , 2006 , 25 ( 7 ): 1 297 - 1 303 . (in Chinese)
Dai Z L , Wang F W , Cheng Q G , et al . A giant historical landslide on the eastern margin of the Tibetan Plateau [J]. Bulletin of Engineering Geology and the Environment , 2019 , 78 ( 3 ): 2 055 - 2 068 .
兰恒星 , 仉义星 , 伍宇明 . 岩体结构效应与长远程滑坡动力学 [J]. 工程地质学报 , 2019 , 27 ( 1 ): 108 - 122 .
Lan H X , Zhang Y X , Wu Y M . Effects of rock mass structure on the dynamics of Long-runout landslide [J]. Journal of Engineering Geology , 2019 , 27 ( 1 ): 108 - 122 . (in Chinese)
Yin Y P , Xing A G , Wang G H , et al . Experimental and numerical investigations of a catastrophic long-runout landslide in Zhenxiong, Yunnan, southwestern China [J]. Landslides , 2017 , 14 ( 2 ): 649 - 659 .
0
Views
0
下载量
3
CSCD
Publicity Resources
Related Articles
Related Author
Related Institution
苏公网安备32010202012147号