language
eng
Author
Description
Cliffs located along the Isotake coast, Shimane, Japan, are characterized by the development of indents without rockfalls or by the occurrence of rockfalls without indents even though the geology is the same. An analytical method was developed to determine the mechanical properties of the rock surfaces on these coastal cliffs. Twenty continuous impact repetitions of the Schmidt hammer were applied normal to the cliff surfaces in each test. The results of the tests (26 with indents and 22 without indents) showed a gradual increase in the rebound as the number of repetitions increased. A new exponential equation was proposed in this study to describe the features of the weathered surfaces. The changes in the results were well approximated by the equation, and the approximation clearly distinguished between the two types of weathered surfaces, with higher rebound values at the surface of the indents than those at the surface of cliffs without indents. The homogeneity/heterogeneity of the surface and inner body of the cliff rock can also be modelled by coefficients appearing in the equation.
Subject
Schmidt hammer
repetitive impacts
rhyolitic pyroclastic rocks
exponential equation
coastal 28 cliff
weathering
Journal Title
Bulletin of Engineering Geology and the Environment
Volume
78
Start Page
3425
End Page
3432
ISSN
1435-9529
ISSN(Online)
1435-9537
Published Date
2019-07
DOI
Publisher
Springer Nature
NII Type
Journal Article
Format
PDF
Text Version
著者版
OAI-PMH Set
Department of Earth science, Faculty of Science and Engineering