Numerical Investigation on the Barrier Dam Risk Caused by Landslide-A Case Study on Caijiaba Landslide | Zendy

Zeng Nianchang | Zendy; Bolong Liu | Zendy; Xie Junning | Zendy

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Numerical Investigation on the Barrier Dam Risk Caused by Landslide-A Case Study on Caijiaba Landslide

Author(s) -

Zeng Nianchang,

Bolong Liu,

Xie Junning

Publication year - 2021

Publication title -

iop conference series earth and environmental science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.179

H-Index - 26

eISSN - 1755-1307

pISSN - 1755-1315

DOI - 10.1088/1755-1315/658/1/012036

Subject(s) - landslide , geotechnical engineering , debris flow , geology , debris , weir , dam break , pore water pressure , geomorphology , geography , flood myth , cartography , oceanography , archaeology

To research the risk of barrier dam induced by landslide, Caijiaba landslide was studied as an example in the present study. The burst risk was assessed as well. To begin with, the region scope of quasi-landslide was obtained by stability calculation. Then the landslide process is analyzed by Partical Flow Code (PFC3D). On the basis of the numerical simulation results, the forming mechanism and motion characteristics of the barrier dam were analyzed. Subsequently, the Classical assessment model was employed to evaluate the burst risk of the barrier dam. Numerical results show that the highest body reaches 68.1 m. As a result, the riverway will be blocked by the debris, forming a weir dam. In addition, the body shape along upstream resembles a wedge. The fastest part of the sliding body is 8 m/s, and some of the debris flow stay on the hill still.

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