近年來，因氣候變遷導致極端氣候，台灣面臨了降水不均的問題，此情況在台灣西南部地區更為嚴重。本研究想藉由不同材料之添加觀察台灣西南部地區泥岩補強後之變化，因此選用台南市左鎮區之泥岩作為研究材料。泥岩地區容易發生邊坡崩壞、沖蝕及沉陷等災害，希望透過添加劑來提高泥岩土質穩定性、土壤強度。
本研究選用曾文南化聯通管工程旁之菜寮溪地區泥岩作為試驗材料，並選用石墨粉做為添加劑，石墨粉特性為高穩定性、可耐高溫、導電性、導熱性、潤滑性及可塑性等特性，因此希望透過研究探討泥岩添加石墨粉後之土壤強度變化狀況。
首先針對菜寮溪地區泥岩進行基本物性試驗了解其工程性質，接著使用不同含量(乾土重的5%、10%、15%、20%)的石墨粉作為泥岩的添加劑進行一系列試驗，包含標準夯實試驗、UCS無圍壓縮試驗(Unconfined Compressive Strength)、DIC影像分析(Digital Image Correlation)、迴歸模擬、電阻試驗。透過這些試驗，探討經石墨粉補強前後之泥岩在不同養置時間下的力學行為及穩定性是否發生變化。此外，藉由DIC試驗觀察試體破壞前後變形量狀況及利用迴歸模型方式預測泥岩在不同石墨粉含量下之強度變化狀況。
本研究試驗結果顯示，添加10%的石墨粉之泥岩在養置7天時抗壓強度從413.1 9 kPA增量534.65 kPA，抗壓強度提升百分比達47.23%。隨著石墨粉含量上升，其抗壓強度增量逐漸下降，但經石墨粉補強之泥岩抗壓強度仍高於未經石墨粉補強之泥岩，使用10%石墨粉之泥岩試體會使泥岩工程性能得到最顯著提升，除了達到最佳抗壓強度，還能有效抑制膨脹與收縮性。
再透過DIC試驗、迴歸模擬、電阻試驗等分析結果觀察試體之破壞情形、強度及電阻值變化趨勢，從而發現根據試體破壞前後之DIC影像無法完整呈現試體受力變化狀況。

In recent years, Taiwan has faced uneven precipitation issues due to extreme weather caused by climate change, with the problem being particularly severe in the southwestern part of the island. This study aims to observe the changes in mudstone reinforcement in southwestern Taiwan through the addition of various materials. Therefore, mudstone from the Zuozhen District in Tainan City was selected as the research material. Mudstone areas are prone to slope failures, erosion, and subsidence. It is hoped that the use of additives can improve the stability and strength of the mudstone soil.
This study used mudstone from the Tsai -Liao River area near the Tsengwen -Nanhua Link Pipe Project as the test material and selected graphite powder as the additive. Graphite powder is characterized by high stability, high temperature resistance, electrical conductivity, thermal conductivity, lubricity, and plasticity. Thus, the study aims to investigate the changes in soil strength after adding graphite powder to the mudstone.

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