Mathematics – Logic
Scientific paper
Sep 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001pnaoj...6...65y&link_type=abstract
Publications of the National Astronomical Observatory of Japan (ISSN 0915-3640), Vol. 6 No. 3, p. 65 - 74 (2001)
Mathematics
Logic
Alma, Geotechnical Property, Geological Property
Scientific paper
The Nobeyama Radio Observatory of Japan (NRO) is continuing to carry out design and development work on its Atacama Large Millimeter/Submillimeter Array (ALMA) at the area in the Cerro Chascón Science Preserve. In order to construct the larger-scale interferometer with 14 km base line, it is neccessary to make a detail survey on the geology, topography and geotechnical properties of the construction site. In this paper, additional to the survey by NRO, such tests as the analysis by X-ray diffractometer, observation by Scanning Electronic Microscope (SEM), pH test, test of resistivity are conducted to understand the geological properties. Furthermore, ultrasonic wave test, uniaxial compression test, slaking test and creep test are conducted to clarify the mechanical behavior in infinitesimal strain condition, the long-term stability and the deterioration of strength of the ground. The results are described in detail.
Endo Akihiro
Nishida Kazunori
Sakamoto Seiichi
Shigematsu Hiroaki
Yashima Atsushi
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