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| 題 名 | 以現地測繪與人工風化實驗探討卓蘭層之風化特性=Investigating Weathering Properties of Cholan Formation by Field Surveying and Mapping and Artificial Weathering Experiments |
|---|---|
| 作 者 | 邱雅筑; 羅偉誠; 劉宸妤; | 書刊名 | 水土保持學報 |
| 卷 期 | 54:2 2024.12[民113.12] |
| 頁 次 | 頁3337-3348 |
| 分類號 | 358.5 |
| 關鍵詞 | 卓蘭層; 岩石風化; 西部麓山帶; 現地測繪; Cholan formation; Rock weathering; West foothill geological region; Field surveying and mapping; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 卓蘭層為台灣本島成岩時間僅長於頭嵙山層之年輕岩層,也是台灣西部南投以北都會區周 邊常見的岩層,具有易風化、膠結不良、強度低且易崩解的特性。本研究針對大安溪河谷的卓 蘭層進行室內人工風化試驗。結果顯示,所採集的砂岩樣本中夾有薄層頁岩,因此其耐久性接 近頁岩,但強度卻較頁岩低。而根據現地測繪與調查結果,取樣點之河岸邊坡崩塌主要機制為 平面及楔型破壞,另亦有區域可能發生傾覆破壞。除了風化侵蝕外,不連續面特性包含位態、 間距與延續性的影響也是決定破壞模式與崩塌量的重要因素之一。 |
| 英文摘要 | Cholan Formation is one of the younger rock formations on Taiwan, with its lithification time only slightly older than that of Toukoshan Formation. It is commonly found in the metropolitan areas north of Nantou in western Taiwan and is characterized by its susceptibility to weathering, poor cementation, low strength, and tendency to disintegrate. This study conducted indoor artificial weathering experiments on samples collected from Cholan Formation exposed in the Daan River valley. The results indicate that the sampled sandstone contains interbedded thin layers of shale, giving it a durability similar to that of shale, but with even lower strength. According to field surveys and mapping, the main collapse mechanisms along the sampled riverbank slopes are planar and wedge failures, with some local topple failures. In addition to weathering and erosion, the characteristics of discontinuities, including their orientation, spacing, and persistence, also play a significant role in controlling the failure modes and the extent of collapses. |
本系統中英文摘要資訊取自各篇刊載內容。