九份二山崩塌特性與其地質生態旅遊和環境教育意義之探討

The Characteristics of Chiu-feng-er-shan Landslide and It's Implication for geo-ecotourism and Environment Education

10.30169/JRTR.200912.0004

巫宗南(Chung-Nan Wu)；徐美玲(Mei-Ling Hsu)；任家弘(Chia-Hung Jen)

地滑 ； 集集地震 ； 九份二山 ； 環境教育 ； 地質生態旅遊 ； landslide hazard ； Chi-Chi earthquake ； Chill-feng-er-shan ； Environment education ； Geo-ecotourism

鄉村旅遊研究

3卷2期（2009 / 12 / 01）

43 - 53

繁體中文

1999年9月21日集集地震造成南投縣國姓鄉九份二山崩塌，由地質與地形資料可知崩塌地為順向坡，是位於向斜軸的一翼，其具有平行和斜交走向節理。綜合地形與鑽探資料辨識，崩塌地至少有六層滑動面。出露滑動面距崩塌前地表的深度，從高至低，出現由淺變深再變淺的現象。由地震產生的地質現象，如左移斷層及岩體產生碰撞所產生的單斜構造等，配合崩塌前復地形的變動特徵，推測崩塌機制和次序為：地震發生時，崩塌地的岩體順著平行和斜交走向節理發生錯動，在崩塌地東翼近粗坑溪處，左移斷層造成岩體碰撞產生落石；主崩塌地下部岩體因地震使岩體靜摩擦力低於搖晃力量而開始滑動；主崩塌地上部岩體在地震搖晃超過滑動面與前述左移斷層的斷層面摩擦力，且下方岩體移動而失去支撐時開始下滑。主崩塌地崩落的滑動岩體進入韮菜湖溪而形成堰塞湖，東翼崩塌物質則進入粗坑溪。九份二山崩塌地雖屬於順向坡，但在並未處於發生崩塌的危險，是集集地震造成岩體的滑動，這種順向坡受到地震影響而產生崩塌將地表的地形發育作用充分展示，因此除了地形與地質意義的科學研究之外，對於大規模特殊地景而言，也具有地質生態旅遊與環境教育的意義，值得相關領域的研究與推廣，設計適合的環境教育教案和地質生態旅遊道程，適合的主題包括：砂頁岩互層、向斜、順向坡、單面山、地震造成災害、崩塌、平面型地滑與堰塞湖等，使九份二山崩塌地可以有更多的活動進行。

The Chi-Chi earthquake of Sep. 21st. 1999 caused the Chiu-feng-er-shan landslide in Kou-hsing township, Nan-tou county. The geological and geomprphological data shows that the landslide is located on a dip slope and also a part of big syncline. There are two sets of joints in the rock, one set of joints are parallel to the strike of the bedding and the other ones are oblique to the strike of the bedding. There are six different sliding surfaces identified from landform and drilling data. The sliding slabs in the main sliding area are thicker in the middle part and thinner in the higher and lower part. The left lateral fault, fold and bulking were produced by the earthquake and landslide. The sliding mass then came down to the channel and blocked the Jiu-tsai-hu creek and fanned a dammed lake. The sliding mass in the eastern part then moved to the Chu-ken creek to the east.The original Chiu-feng-er-shan area was on a dip slope. But it was not highly prone to landslide hazard. The Chi-Chi earthquake trgiiered the landslide, which also means the site can be with importance of many aspects, namely science, environment education and ecotourism. There are many suitable topics for the site, such as sand stone and shell interlayer, syncline, dip slope, cuesta, earthquake hazards, mass movement, translational landslide and dammed lake. The material for environment education and geo-ecotourism can be development for more activities in the future.

1. Bommer, J. J.,Rodríguez, C. E.(2002).Earthquake-induced landslides in Central America.Engineering Geology,63,189-220.
2. Chang, K.J.,Taboada, A.,Chan, Y. C.(2005).Geological and morphological study of the Jiufengershan landslide triggered by the Chi-Chi earthquake.Geomorphology,71,293-309.
3. Jibson, R.W.,Harp, E. L.,Schulz, W.,Keefer, D. K.(2006).Large rock avalanches triggered by the M 7.9 Denali Fault, Alaska, earthquake of 3 November 2002.Engineering Geology,83(1-3),144-160.
4. Keefer, D. K.(1984).Landslides caused by earthquakes.Geological Society of America Bulletin,95,406-421.
5. Keefer, D. K.(2002).Investigating landslides caused by earthquakes-a historical review.Surv. Geophys,23,473-510.
6. Lin, A.,Chen, A.,Liau, C-F.,Lee, C-T.,Lin, C-C.,Lin, P-S.,Wen, S-C.,Ouchi T.(2001).Frictional fusion due to coseismic landsliding during the 1999 Chi-Chi(Taiwan) ML 7.3 earthquake.Geophysical Research Letters,28(20),4011-4014.
7. Ma, K-F.,Tanaka H.,Song, S-R.,Wang, C-Y.,Hung, J-H.,Tsai, Y-B.,Mori, J.,Song, Y-F.,Yeh, E-C.,Soh, W.,Sone, H.,Kuo, L-W.,Wu, H-Y.(2006).Slip zone and energetics of a large earthquake from the Taiwan Chelungpu-fault Drilling Project.Nature,444,473-476.
8. Meredith, J.、Cantrell, D.、Conner, M.、Hunn, D.、Spector, P.、周儒編譯(2003)。Best Practices for Environmental Education: Guidelines for Success。台北市:環境教育學會。
9. Rodríguez, C.E.,Bommer, J.J.,Chandle R.J.(1999).Earthquake-induced landslides: 1980-1997.Soil Dynamics and Earthquake engineering,18,325-346.
10. Shou, K.J.,Wang, C.F.(2003).Analysis of the Chiufengershan landslide triggered by the 1999 Chi-chi earthquake in Taiwan.Engineering Geology,68,237-250.
11. Somerville, P.G.,Graves, R.W.(2003).Characterization of Earthquake Strong Ground Motion.Pure and Applied Geophysics,160,1811-1828.
12. Tibaldi, A.,Ferrari, L.,Pasquarè G.(1995).Landslides triggered by earthquakes and their relations with faults and mountain slope geometry: an example from Ecuador.Geomorphology,11(3),215-226.
13. Wang, W. N.,Chigira, M.,Furuya, T.(2003).Geological and geomorphological precursors of the Chiu-feng-erh-shan landslide triggered by the Chi-chi earthquake in central Taiwan.Engineering Geology,69,1-13.
14. Zaruba, Q.,Mend, V.(1982).Landslides and their control.Developments in geotechnical engineering,31,324.
15. Zêzere, J. Ĺ.,Ferreira, A. B.,Rodríguez, M. L.(1999).The role of conditioning and triggering factors in the occurrence of landslides: a case study in the area north of Lisbon in Portugal.Geomorphology,30,133-146.
16. 王鑫(1996)。大自然教室：教育部「自然教育中心」校外教學研習活動服務手冊。台北市:中華民國自然生態保育協會。
17. 李銘輝(1988)。觀光地理。台北市:南宏圖書。
18. 張石角(1987)。山坡地潛在危險之預測及其在環境影響評估之應用。中華水土保持學報，18(2)，41-62。
19. 黃鑑水、陳勉敏、曹恕中、許銘義(2000)。台灣山崩災害專輯（一）地質災害調查報告第一號。經濟部中央地質調查所。