The following link can help people with the same concern.

https://forum.detectation.com/viewtopic.php?t=385

Seismic crosshole, seismic downhole and seismic reflection or refraction (near surface) are the most common geophysical methods. In addition to those you can get some approximate results by using the so called "H/V ratio method" with ambient vibrations measurements.

Spectral Analysis of Surface Wave (SASW) or Multichannel Analysis of Surface Wave (MASW) can give you the shear wave velocity directly. Requires a seismograph (and computer), cables, geophones, a sledge hammer and trigger cable, software and a geophysicist/expert. No drilling required.

Dear Tan-No Nguyen

It is not just the choice of the equipment. Previously to instrumentation selection you have to define what data you need and what method you want to use to determine parameters suitable for your future studies.

Methods of shear wave velocity control were enumerated in Stoyan Andreev answer. I'd recommend crosshole or seismic downhole methods as they make it possible for building a soil profile before the evaluation of shear wave velocities. And the identification of fully saturated zones is possible to bigger depth.

SCPTU method also provides very good results, however the description of soils must be based on correlation methods. So some paralel drillings seem to be inevitable anyway.

Best regards

Jaroslaw Rybak

Dear Scholars,

I would like to say many thanks for your useful ideas.

I thought that I will apply SASW or MASW methods because of my object relating to the national treasure that is not able to apply the crosshole or seismic downhole techniques. It is quite good if I have chance to apply drilling test or SCPTu method.

Thank you so much for your help.

I wish you all success in research.

Best Regards,

Tan No Nguyen

Dear Prof. Mohamed Beneldjouzi

I would like to say thank you so much for your recommendation.

I just thought that It is better if we use the combination of HVSR and MASW techniques to estimate the soil condition.

Now, I wonder whether we can use a sledgehammer impact source to investigate the ground condition over 30 m in depth, especially the object is in the mountain. Due to the restricted areas and the traditional buildings relating to the national treasures, so there are any artificial sources to have enough power for excitation the ground to get the shear wave velocity of soil without using a big truck.

Would you recommend me some portable equipment for excitation the ground?

Thank you so much Prof. Mohamed Beneldjouzi

I hope you have a great day.

Best Regards,

Tan No Nguyen

Sledge Hammer may work depending on your ground conditions. Best to use an accelerated drop source or a Betsy seisgun.

Dear Prof. Val Donazzolo

I would like to say many thanks for your suggestion.

Thank you,

Tan No Nguyen