Open AccessA case study of slope hazardous mitigation by ground monitoring system
Author(s) -
Ben Yang,
Jiunnren Lai,
Chiung Fen Cheng
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/615/1/012040
Subject(s) - foothills , geology , landslide , typhoon , inclinometer , conglomerate , geotechnical engineering , debris , mass movement , sedimentary rock , oil shale , slope stability , geomorphology , hydrology (agriculture) , structural basin , geochemistry , oceanography , paleontology , geodesy , ecology , biology
The western foothills geological zone of Taiwan contains sedimentary rocks such as conglomerate, sandstone, shale, and mudstone. These formations often cause severe damage to life and property during a natural disaster such as earthquake and rainstorm, especially on a dip slope. This paper presents the results of long-term ground monitoring on a high sliding potential dip slope located in the western foothills of central Taiwan. The slope has been went through substantial movements induced by rainstorms during the monsoon season or after a typhoon. By comparing the rainfall data and long-term in-situ measurement of ground displacement using total station and inclinometer, we find that the movement of this slope is highly related to regional rainfall. The slide mechanism can be attributed to the infiltration of rainfall that tends to increase the driving force of the upper sliding mass and decrease shear resistance on the interface between sandstone and shale.