Dam Assessment by Multi-channel Analysis of Surface Wave Technique, MASW
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Abstract
Multi-channel surfi ng for monitoring dams is a modernised technological approach that
saves time and money in dam maintenance. A Case studiy of the Krasio-Dam project
located in Aumpoe Dan-Chang Suphan-Buri province. The starting from the generate shear
ware source by beat the hammer to get the signal, then refl ected signal go through the
ground surface, then the receiver can get the signal. The receiver transforms into the data
and go to recording station by cable. The recording station process data with seisimager
S/W. This program transforms ware signal to 2 D-crossection photo of geological structure
of the surveyed section. The results showed that the speed of shear wave penetration
travels between 100 and 850 meters per second. It is able to classify the densities and types
of soil layer into four classes (labelled B to E). A low shear wave indicates high humidity
with low density. These are critical areas of weakness that need monitoring and fast
maintenance of the dam. The study showed the reductions in exploration working time as
well as budget reductions and improved accuracy of dam assessment.
Article Details
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