Prediction of the sliding type and critical factor of safety in homogeneous finite slopes

Salmasi, Farzin; Pradhan, Biswajeet; Nourani, Bahram

doi:10.1007/s13201-019-1038-1

Cited by 20 publications

(9 citation statements)

References 12 publications

(13 reference statements)

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“…Excavation increases the slope angle and results in a more unstable slope. The result is compliant with observations in practice (Salmasi et al, 2019). Addition of surcharge at the toe or backfilling of the slope helps to stabilise the slope, resulting in increased FoS.…”

Section: Change In Stratigraphy Geological and Slope Geometry For An ...supporting

confidence: 89%

Development of the scaled boundary finite element method for image-based slope stability analysis

Wijesinghe

Dyson

You

et al. 2022

Computers and Geotechnics

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Section: Change In Stratigraphy Geological and Slope Geometry For An ...supporting

confidence: 89%

Development of the scaled boundary finite element method for image-based slope stability analysis

Wijesinghe

Dyson

You

et al. 2022

Computers and Geotechnics

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“…However, according to Fig. 2, the safety factor almost exponentially reduces with the underwater depth of the device [37]. From Fig.…”

Section: A Designing Partmentioning

confidence: 89%

Semi Wireless Underwater Rescue Drone with Robotic Arm

Meem

Osman²,

Bashar

et al. 2022

Journal of Robotics and Control

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Wireless communication with underwater drones plays a vital role in rescuing an after-ship accident, and it is considered one of the most challenging technologies nowadays. The wireless underwater drone also contributes significantly to navy, gas and oil companies, underwater infrastructure, aquaculture industry, commercial diving, and deep archeological investigations. Bangladesh, a developing country with many rivers and seashores used by many water transport vehicles, faces boat and ship accidents as a typical scenario every year. Many lives, dead bodies, ships, boats, and valuable objects do not get rescued because of the lifetime risk of the divers or the rescue team. The rescue operation is exceptionally troublesome because of the absence of wireless underwater drone technology at the cheapest cost, whose innovation and function are very challenging for Bangladesh. Considering these problematic situations, in this paper, we have proposed a prototype of a semi wireless underwater drone designed and structured with the best quality PVC pipe of 6mm diameter, considering the weight as lowest as possible, maintaining its buoyancy properly. In this prototype, we have used three propellers, each connected with three servo motors, to move it up, down, back, and forth. A robotic arm is also utilized to rescue objects from under the water, and a 4K HD EKEN camera and two waterproof fog lights to search and visualize underwater objects on the mobile screen from the land. For wireless communication between the controller and the drone, we have used two nRF24L01 modules; one is for the controller, and the other is for the drone’s receiver to send and obtain the signals from the controller to the drone. 12V and 24V lithium-ion batteries are employed as power sources for the controller and receiver, respectively. Finally, real experimental tests of the proposed underwater device were performed in a swimming pool facility.

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“…Taylor (1937) proposed a term, n d , which is the ratio between the depth from the slope top to the stiff stratum and the depth from the slope top to the slope bottom, to identify the failure mode of the soil dump. When n d is smaller than 4 and the slope angle is lower than 58 °, it is possible to have the failure mode of toe circle (Petterson, 1955;Steward et al, 2011;Salmasi et al, 2019). In addition, the results indicate that the heap height has significant influence on the potential slide surface of soil dump.…”

Section: Effects Of Heap Height and Slope Gradient On Soil Dump Stabilitymentioning

confidence: 91%

Stability Satisfied Design and Construction of Excavated Soil Dumps in a Soft Soil Region in China

Wang

Zhan

et al. 2022

Front. Earth Sci.

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Dumping is the main disposal method of the excavated soil from underground engineering in China; however, due to a lack of construction experiences and technical standards, landslide disasters often occurred during rapid dumping of excavated soil in soft soil regions. In this paper, geotechnical tests were conducted on the excavated soil from a foundation engineering site in Hangzhou, where the excavated soil would be used to construct a piled mountain. On this basis, a numerical study was carried out to investigate the effects of the design parameters (heap height, slope gradient) and construction parameters (layer thickness, heap speed) on the dump stability and failure mode. The results show that the safety factor of the excavated soil dump decreases with increasing heap height, slope gradient, layer thickness, and heap speed. The potential slide surfaces are toe circle, and compared to layer thickness and heap speed, the heap height and slope gradient have more remarkable influence on the depth and area of potential slide mass. The heap height limit increases with a decrease in slope gradient, and the heap speed limit decreases with an increase in layer thickness. Under the premise of ensuring the slope stability, the optimal design and construction parameters were obtained, i.e., heap height 28 m, slope gradient 1:2.75, layer thickness 1.0 m, and heap speed 0.50 m/day. Compared to the original design scheme, the storage capacity increases by 20.01%, and the construction duration decreases by 30.25% in the optimal design.

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Prediction of the sliding type and critical factor of safety in homogeneous finite slopes

Cited by 20 publications

References 12 publications

Development of the scaled boundary finite element method for image-based slope stability analysis

Development of the scaled boundary finite element method for image-based slope stability analysis

Semi Wireless Underwater Rescue Drone with Robotic Arm

Stability Satisfied Design and Construction of Excavated Soil Dumps in a Soft Soil Region in China

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