| Summary: | 碩士 === 國立臺灣海洋大學 === 應用地球科學研究所 === 97 === In order to study the soil physics and dynamics, we apply the drilling data from the Central Geological Survey and conduct several laboratory tests. The SPT values and several related digital results form a critical point to understand the soil liquefaction and other engineering geology of the Changhua area.
The results suggest that the soil characteristics and liquefaction have strong relationships: the bigger the grain size (such as the gravel), the less is liquidated; the bigger the density (such as the mud), the less is liquidated. The sand, a typical product of river sedimentary fan, becomes a major area of soil liquefaction. In the Changhua study area, it has the Ta-Do River in the north and the Tso-Sui River in the south. Naturally it is a sedimentary fan, hence, a candidate region for soil liquefaction.
The Tai-Plastics has successfully applied a soil compaction method to reduce the chance to be liquidated. However, it is difficult to apply the whole area to be compacted. Therefore, the study of soil physics and dynamics become a necessary way to understand the problem.
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