FIELD EXPERIMENT ON PROGRESSIVE FAILURE OF A LANDSLIDE DAM

2019 ◽  
Vol 75 (2) ◽  
pp. I_847-I_852
Author(s):  
Shoki TAKAYAMA ◽  
Hiroki HOSHIYAMA ◽  
Shusuke MIYATA ◽  
Masamitsu FUJIMOTO ◽  
Yoshifumi SATOFUKA
Keyword(s):  
Field Experiment ◽  
Progressive Failure ◽  
Landslide Dam

scholarly journals Numerical simulation method for predicting a flood hydrograph due to progressive failure of a landslide dam

Landslides ◽  
2021 ◽  
Author(s):  
S. Takayama ◽  
S. Miyata ◽  
M. Fujimoto ◽  
Y. Satofuka
Keyword(s):  
Field Experiments ◽  
Failure Modes ◽  
Initial Conditions ◽  
Progressive Failure ◽  
Landslide Dam ◽  
Failure Model ◽  
Reservoir Water ◽  
Erosion Model ◽  
Flood Hydrograph ◽  
Overtopping Erosion

AbstractReducing the damage due to landslide dam failures requires the prediction of flood hydrographs. Although progressive failure is one of the main failure modes of landslide dams, no prediction method is available. This study develops a method for predicting progressive failure. The proposed method consists of the progressive failure model and overtopping erosion model. The progressive failure model can reproduce the collapse progression from a dam toe to predict the longitudinal dam shape and reservoir water level when the reservoir water overflows. The overtopping erosion model uses these predicted values as the new initial conditions and reproduces the dam erosion processes due to an overtopping flow in order to predict a flood hydrograph after the reservoir water overflows. The progressive failure model includes physical models representing the intermittent collapse of a dam slope, seepage flow in a dam, and surface flow on a dam slope. The intermittent collapse model characterizes the progressive failure model. It considers a stabilization effect whereby collapse deposits support a steep slope. This effect decreases as the collapse deposits are transported downstream. Such a consideration allows the model to express intermittent, not continuous, occurrences of collapses. Field experiments on the progressive failure of a landslide dam were conducted to validate the proposed method. The progressive failure model successfully reproduced the experimental results of the collapse progression from the dam toe. Using the value predicted by the progressive failure model, the overtopping erosion model successfully reproduced the flood hydrograph after the reservoir water started to overflow.

Biodata response elaboration: A large-scale field experiment

2010 ◽  
Author(s):  
Julia Levashina ◽  
Frederick P. Morgeson ◽  
Michael A. Campion
Keyword(s):  
Field Experiment ◽  
Large Scale ◽  
Scale Field ◽  
Large Scale Field

Overcoming Conflicts and Improving Teamwork in Acute Hospitals using Care Pathways: A Field Experiment

2012 ◽  
Author(s):  
Svin Deneckere ◽  
Martin Euwema ◽  
Cathy Lodewijckx ◽  
Massimiliano Panella ◽  
Walter Sermeus ◽  
...  
Keyword(s):  
Field Experiment ◽  
Care Pathways ◽  
Acute Hospitals

Effects of fear and anger on perceived risks of terrorism: A national field experiment

2003 ◽  
Author(s):  
Jennifer S. Lerner ◽  
Roxana M. Gonzalez ◽  
Deborah A. Small ◽  
Baruch Fischhoff
Keyword(s):  
Field Experiment ◽  
Perceived Risks

A Field Experiment of Mothers and Fathers in the Workplace

2007 ◽  
Author(s):  
Nicole Endicott ◽  
Kathleen Fuegen
Keyword(s):  
Field Experiment ◽  
Mothers And Fathers

Evaluation of acaricides against false spider mite, Tenuipalpus aboharensis (Acari: Tenuipalpidae), a pest of pomegranate

ENTOMON ◽  
2020 ◽  
Vol 45 (1) ◽  
pp. 81-86
Author(s):  
Mohammad Yosof Amini ◽  
Ahamad Shah Mohammadi ◽  
Srinivasa N ◽  
Onkarappa S
Keyword(s):  
Field Experiment ◽  
Spider Mite ◽  
Spider Mites ◽  
Economic Losses ◽  
Fruit Crops ◽  
False Spider Mites ◽  
False Spider ◽  
False Spider Mite

False spider mites are serious pests of pomegranate and frequently cause considerable economic losses in other fruit crops as well. A field experiment conducted to evaluate eleven acaricides against Tenuipalpus aboharensis infesting pomegranate plants, revealed that wettable sulphur at 2.5 g and dicofol at 2.5 ml per litre were very effective and other acaricides viz. propargite, fenpyroximate, chlorfenapyr and buprofezin were also found effective against T. aboharensis.

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