scholarly journals Experimental Study of Sabo Dam Physical Measures Against Subsequent Sediment Flow Following Debris Flow Deposition

2021 ◽  
Vol 13 (3) ◽  
pp. 56-63
Author(s):  
Yongrae KIM ◽  
Takashi YAMADA
Keyword(s):  
Experimental Study ◽  
Debris Flow ◽  
Sediment Flow ◽  
Physical Measures

Deposition Prediction of Debris Flow Alluvial Fan Based on Experimental Study

2012 ◽  
Vol 518-523 ◽  
pp. 4819-4822
Author(s):  
Jin Feng Liu ◽  
Shun Yang ◽  
Guo Qiang Ou
Keyword(s):  
Experimental Study ◽  
Debris Flow ◽  
Statistical Method ◽  
Laboratory Experiments ◽  
Empirical Models ◽  
Alluvial Fan ◽  
Disaster Prevention ◽  
Average Accuracy ◽  
Hazardous Area ◽  
Debris Flow Disaster

The deposition prediction of debris flow hazardous area is very important for organizing and implementing debris flow disaster prevention and reduction. This paper selected the data base from laboratory experiments and applied the multiple regression statistical method to establish a series of empirical calculation models for delimiting the debris flow hazardous areas on the alluvial fan. The empirical models for predicting the maximum deposition length (Lc), the maximum deposition width (Bmax) and the maximum deposition thichness (Z0) under the condition of different debris flow volumes (V), densities (rm) and slopes of accumulation area (θd) were establised. And the verification results indicated that the established models can predict the debris flow hazards area with the average accuracy of 86%.

Experimental study on the performance characteristics of viscous debris flows with a grid-type dam for debris flow hazards mitigation

2019 ◽  
Vol 78 (8) ◽  
pp. 5763-5774 ◽  
Author(s):  
Dong Yuan ◽  
Jinfeng Liu ◽  
Yong You ◽  
Guangze Zhang ◽  
Dong Wang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Debris Flow ◽  
Debris Flows ◽  
Performance Characteristics

Experimental study of entrainment behavior of debris flow over channel inflexion points

2016 ◽  
Vol 13 (6) ◽  
pp. 971-984 ◽  
Author(s):  
Kai-heng Hu ◽  
Li Pu ◽  
Xie-kang Wang
Keyword(s):  
Experimental Study ◽  
Debris Flow

scholarly journals EXPERIMENTAL STUDY ON DEBRIS FLOW CAPTURING PROCESS OF GRID TYPE SABO DAM

2005 ◽  
Vol 49 ◽  
pp. 901-906
Author(s):  
Naoki MIYAZAWA ◽  
Toru TANISHIMA ◽  
Kengo SUNADA
Keyword(s):  
Experimental Study ◽  
Debris Flow

scholarly journals DESAIN SABO DAM TIPE CONDUIT SEBAGAI PENGENDALI DAYA RUSAK ALIRAN DEBRIS

2020 ◽  
Vol 16 (2) ◽  
pp. 105-116
Author(s):  
Yuli Fajarwati ◽  
Teuku Faisal Fathani ◽  
Fikri Faris ◽  
Wahyu Wilopo
Keyword(s):  
Rock Mass ◽  
Debris Flow ◽  
Return Period ◽  
Mass Movements ◽  
Flow Depth ◽  
Overturning Stability ◽  
Sediment Flow ◽  
The Stability ◽  
Building Stability ◽  
Flood Condition

ABSTRAKSungai Air Kotok di Kabupaten Lebong, Bengkulu memiliki litologi batuan yang rapuh akibat pengaruh panas bumi, kondisi tersebut menyebabkan rentan mengalami pergerakan massa tanah/batuan. Oleh karena itu, diperlukan upaya mitigasi untuk mengurangi risiko bencana dengan perencanaan bangunan pengendali aliran debris berupa sabo dam. Penelitian ini bertujuan untuk merencanakan desain sabo dam tipe conduit yang dirancang secara seri dan mengevaluasi stabilitas sabo dam berdasar SNI 2851:2015. Hasil perhitungan menunjukkan debit puncak untuk kala ulang 100 tahun sebesar 171,21 m3/detik. Empat seri sabo dam memiliki dimensi lebar pelimpah rerata ± 40 m, kedalaman aliran debris sebesar 1 m, dan tinggi pelimpah ialah 2,4 m. Stabilitas sabo dam saat banjir diperoleh faktor aman untuk stabilitas geser dan guling sebesar 3,46 ; 1,62. Adapun faktor aman terhadap pengaruh aliran debris untuk stabilitas geser dan guling adalah 3,30 ; 1,58. Berdasarkan hasil analisis, empat seri sabo dam tipe conduit yang dirancang mampu mengendalikan daya rusak banjir maupun aliran debris.Kata kunci: Hidraulika sungai, aliran sedimen, bangunan sabo, stabilitas sabo ABSTRACTAir Kotok River in Lebong Regency, Bengkulu Province has the lithology of weathered rock which is a result of geothermal process, this condition causes to be susceptible to land / rock mass movements. Therefore, the mitigation efforts are needed to reduce the risk from disaster by design debris flow control such as sabo dam. This study aims to design series of conduit type sabo dam and evaluate the stability based on SNI 2851: 2015. The calculation shows that the peak discharge for the 100-year return period is 171.21 m3 / sec. The four sabo dam series have dimensions of spill width of ± 40 m, debris flow depth of 1 m, and overflow height of 2.4 m. The stability of sabo dam has safety factor in flood condition for shear and overturning stability are 3.46; 1.62, while in a debris flow condition for shear and overturning stability are 3.30; 1.58. Based on the results, the four series of conduit sabo dam are able to control the destructive power of floods and debris flows.Key word: River hydraulic, sediment flow, sabo building, stability of sabo

Experimental study on impact and deposition behaviours of multiple surges of channelized debris flow on a flexible barrier

Landslides ◽  
2020 ◽  
Vol 17 (7) ◽  
pp. 1577-1589 ◽  
Author(s):  
Dao-Yuan Tan ◽  
Jian-Hua Yin ◽  
Jie-Qiong Qin ◽  
Zhuo-Hui Zhu ◽  
Wei-Qiang Feng
Keyword(s):  
Experimental Study ◽  
Debris Flow ◽  
Flexible Barrier
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