Di Song’s research while affiliated with Chongqing Jiaotong University and other places

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Publications (2)


Experimental Study on Landslide-Generated Waves Overtopping in Reservoirs with Arch Dams
  • Article

September 2024

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13 Reads

Journal of Hydraulic Engineering

Pingyi Wang

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Di Song

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Lu Hua

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[...]

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Figure 1. (a) Water channel profile diagram; (b) model planar graph and position diagram of G1-G22 wave gauge; (c) landslide body.
Figure 4. (a) Water surface process line in front of dam. (b) Wave pressure duration curve of dam center section along water depth distribution.
Parameters of landslide blocks.
Specific location of pressure measuring point.
Test conditions.

+1

Experimental Study on Pressure Characteristics of Gravity Dam Surface under Impact of Landslide-Generated Impulse Waves
  • Article
  • Full-text available

January 2023

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101 Reads

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4 Citations

Sustainability

Landslide-generated impulse waves of a mountain-river reservoir will endanger the dam body’s stability and the dam structure’s safety and even pose a significant threat to the property safety of downstream residents. Timely prediction of dam surface pressure is essential for dam safety assessment. The pressure distribution characteristics and variation law of the gravity dam surface under the impact of landslide-generated impulse waves are studied through a three-dimensional physical model test. The results show that the landslide volume and angle are the key control factors of the first wave amplitude in front of the dam. The maximum and minimum pressures are near the water surface and at two-thirds of the water depth, respectively. The maximum pressure has a power function relationship with the maximum amplitude of the wave in front of the dam. Furthermore, the maximum amplitude of the first wave in front of the dam significantly influences the total pressure of the single-width wave on the dam surface. Based on the research results, the single-width wave total pressure prediction method is constructed under different first wave amplitudes in front of the dam, which can provide theoretical guidance and technical support for dam safety assessment and landslide-generated surge risk assessment.

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Citations (1)


... When employing a double cutoff, the minimal uplift pressure, gradient, and seepage occur when the upstream and downstream cutoffs have i = 45° and 120°, respectively. The study by [5] performed experimental study on pressure characteristics of gravity dam surface under impact of landslidegenerated-impulse waves. The results indicated that the primary determinants of the initial wave amplitude in front of the dam are the landslide volume and angle. ...

Reference:

Pore water pressure estimation under concrete dam subjected to seismic load
Experimental Study on Pressure Characteristics of Gravity Dam Surface under Impact of Landslide-Generated Impulse Waves

Sustainability