New Approach for Developing Correlation of NSPT and Shear-Wave Velocity (Vs): Bantul Case Study

Authors

  • Haifani Akhmad Muktaf Centre for Nuclear Reactor Technology, National Research and innovation Agency- BRIN,, Indonesia
  • Wiyono Wiyono Centre for Groundwater and Environmental Geology, ESDM Bandung,, Indonesia
  • Biatna Dulbert Tampubolon National Standardization Agency of Indonesia, Indonesia

DOI:

https://doi.org/10.17014/ijog.9.3.395-413

Keywords:

soil type, wave velocities, penetration, seismic, power regression, gradation approach

Abstract

DOI:10.17014/ijog.9.3.395-413

Predictions of ground motion levels that, under certain conditions, may cause liquefaction require a sufficient knowledge of the underlying soil characteristics. The utilization of the seismic refraction method applies measurements of the subsurface shear-wave velocities (Vs) as a representation of the properties of stiffness and soil amplification. This study, carried out in Bantul, Yogyakarta Province, Indonesia, is conducted to determine the relationship between Standard Penetration Test N values (NSPT) and Vs by using data from eighty-eight drill sites and twenty-nine seismic reflection investigations with the statistical method, namely the Statistical Gradation Approach. The new equations, developed from a power regression analysis, are applied to all soil and eight soil types: silty sand, sand, gravelly sand, clay, silt, sandy clay, clay sand, and sandy silt. The equations, proposed to predict Vs, show a strong relationship between NSPT and Vs values, which applied to other regions with the shear-wave velocity of <300 m/sec, shallow groundwater depth, and dominant sandy soil.


Author Biographies

Haifani Akhmad Muktaf, Centre for Nuclear Reactor Technology, National Research and innovation Agency- BRIN,

Centre for Nuclear Power Reactor, BAPETEN, Jakarta, Indonesia

Wiyono Wiyono, Centre for Groundwater and Environmental Geology, ESDM Bandung,

Centre for Groundwater and Environmental Geology, ESDM Bandung, Indonesia

Biatna Dulbert Tampubolon, National Standardization Agency of Indonesia

Center for Research and Human Resources Development, Tangerang Selatan, Indonesia

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Published

31-10-2022

How to Cite

Muktaf, H. A., Wiyono, W., & Tampubolon, B. D. (2022). New Approach for Developing Correlation of NSPT and Shear-Wave Velocity (Vs): Bantul Case Study. Indonesian Journal on Geoscience, 9(3), 395–413. https://doi.org/10.17014/ijog.9.3.395-413

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