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<p>Waves generated by landslides possess specific lengths and heights that are influenced by geometric and hydraulic parameters. Wavelength, defined as the distance between two consecutive crests, is one of the most critical dynamic characteristics of waves. Variations in the weight of sliding bodies, the slope of the sliding bed, and the size of the rocks utilized have a direct impact on wave behavior. Dimensional analysis based on Buckingham’s Pi theorem was employed for data analysis. The derived dimensionless relationship is presented as <i>λ</i>/<i>b</i> = <i>f</i> (<i>S</i>, <i>w</i>/<i>b</i>, <i>d</i>/<i>b</i>, <i>y</i>/<i>b</i>), where <i>S</i> represents the slope of the sliding surface of the bodies, w/b denotes the sliding body weight ratio, <i>d</i>/<i>b</i> indicates the sliding body diameter ratio (regarding the size of the bodies), <i>y</i>/<i>b</i> represents the relative flow depth, and <i>λ</i>/<i>b</i> stands for the wavelength ratio. Experimental results indicated that increasing the weight ratio of the bodies significantly increases the wavelength. Conversely, increasing the s and the <i>d</i>/<i>b</i> leads to a decrease in wavelength. Regression analyses have demonstrated that the derived relationship exhibits a strong correlation with experimental data and is capable of predicting the wavelength with high precision. Quantitatively, it can be stated that increasing the weight ratio of the sliding bodies (from 0.16 to 0.26) increased the wavelength by approximately 20%. Furthermore, increasing the sliding surface slope from 30° to 60° decreased the wavelength by an average of 15%. Variations in the d/b ratio (from 0.08 to 0.20) resulted in a 10–15% reduction in wavelength. Moreover, under conditions where the weight ratio of the bodies was higher, its effect on the wavelength was significantly greater than the variations in the d/b ratio and bed slope. These results can be beneficial in the design of river engineering structures and the management of floods induced by sliding bodies.</p>

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Experimental Study of the Effects of Selected Parameters on the Wavelength of Waves Generated by Landslide Masses

  • 期刊论文

  • 发表日期：

    2026年6月15日

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  • Sahar Rostambeigi,
  • Shamsa Basirat,
  • Mohammad Heidarnejad,
  • Ehsan Delavari,
  • Mohammad Hosseini

摘要

Waves generated by landslides possess specific lengths and heights that are influenced by geometric and hydraulic parameters. Wavelength, defined as the distance between two consecutive crests, is one of the most critical dynamic characteristics of waves. Variations in the weight of sliding bodies, the slope of the sliding bed, and the size of the rocks utilized have a direct impact on wave behavior. Dimensional analysis based on Buckingham’s Pi theorem was employed for data analysis. The derived dimensionless relationship is presented as λ/b = f (S, w/b, d/b, y/b), where S represents the slope of the sliding surface of the bodies, w/b denotes the sliding body weight ratio, d/b indicates the sliding body diameter ratio (regarding the size of the bodies), y/b represents the relative flow depth, and λ/b stands for the wavelength ratio. Experimental results indicated that increasing the weight ratio of the bodies significantly increases the wavelength. Conversely, increasing the s and the d/b leads to a decrease in wavelength. Regression analyses have demonstrated that the derived relationship exhibits a strong correlation with experimental data and is capable of predicting the wavelength with high precision. Quantitatively, it can be stated that increasing the weight ratio of the sliding bodies (from 0.16 to 0.26) increased the wavelength by approximately 20%. Furthermore, increasing the sliding surface slope from 30° to 60° decreased the wavelength by an average of 15%. Variations in the d/b ratio (from 0.08 to 0.20) resulted in a 10–15% reduction in wavelength. Moreover, under conditions where the weight ratio of the bodies was higher, its effect on the wavelength was significantly greater than the variations in the d/b ratio and bed slope. These results can be beneficial in the design of river engineering structures and the management of floods induced by sliding bodies.