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http://dx.doi.org/10.9720/kseg.2021.4.541

Development of Dynamic Cone Penetration Tester Module for Slope Vulnerability Assessment and Correlation of Its Results with Standard Penetration Test Values  

Chae, Hwi-Young (Geomecca Engineering Inc.)
Kwon, Soon-dal (Geomecca Engineering Inc.)
Publication Information
The Journal of Engineering Geology / v.31, no.4, 2021 , pp. 541-547 More about this Journal
Abstract
To assess the stability of a slope and the likelihood of its loss or collapse requires information about the ground, such as the composition of the stratum and its mechanical characteristics. This information is generally gathered through standard penetration testing (SPT) and cone penetration testing. SPT is not widely used due to problems with accessing slopes, most of which are steep and without ramps. A drop cone penetrometer, a portable device that can make up for these shortcomings, can be used in a limited way in some circumstances. Therefore, we developed a portable drilling machine and a small dynamic cone penetration test module that can easily access a slope site and perform SPT. The correlation of the developed system's results with those from SPT was analyzed. Analysis of the correlation between the energy shear rate passing to the load during the different test types established that the energy shear rate is reflected in the test result. The correlation between corrected dynamic cone penetration testing and corrected SPT was Nd' = 3.13 N'.
Keywords
vulnerable slopes; portable drilling machine; dynamic cone penetration; standard penetration test; correlation analysis;
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