吊神山地區水文與地質特性之相關性研究; Integrated Study on Hydrologic and Geologic Characteristics in Tiaoshenshan Area

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题名:	吊神山地區水文與地質特性之相關性研究;Integrated Study on Hydrologic and Geologic Characteristics in Tiaoshenshan Area
作者:	余嘉凌;Chia-Ling Yu
贡献者:	應用地質研究所
关键词:	河流坡降指數;水系密度;大安溪;大甲溪;吊神山;Taanhsi;Tiaoshenshan;Tachiahsi;S-L Index;Drainage density
日期:	2004-06-25
上传时间:	2009-09-22 09:58:52 (UTC+8)
出版者:	國立中央大學圖書館
摘要:	本研究選擇苗栗縣卓蘭鎮與台中縣東勢鎮交界之吊神山地區，進行水文與地質特性之相關性研究。以地形學的原理來分析本區水系的分佈型態及特徵，並進而探討地形、地質構造與水系發育之相關性。本研究使用水系空間分析方法與水系密度分析方法，以進行地表水文特性之研究。水系空間分析分為平面空間分析與縱向空間分析，前者是以水系及河道型態來分析水系的分佈情形；後者則是以垂直方向來探討地形或地質構造在河流縱向空間所造成之異常現象，並檢討其成因。在本研究中，縱向空間分析主要以河流的縱剖面分析為主，並輔以河流坡降指數（S-L Index），以加強遷急點之判識。另外，在垂直空間分析中，繪製貫穿大安溪、大甲溪及其河階地之河流橫剖面，以討論此剖面上所顯露之地形特徵。水系密度分析則是利用單位面積內之水系線密度進行研討，藉由網格內水系密度變化與地質構造之對比，則可建立其間之相關性。研究結果顯示，本區水系的發育，主要受控於地形及地質構造，受岩性之影響較小。紅土台地堆積層覆蓋之區域，水系多依地勢發育；褶皺構造發達之區域，水系沿著地層的走向發展；無構造且單純為卓蘭層出露之區域，水系的發展則是沿著地層之傾向發育。水系密度的分析結果顯示，自吊神山地區北側約一公里處至石岡以東一公里處之帶狀區域，水系密度值較高，對比至地質構造圖，推測為東勢背斜軸部之延伸。 The main purpose of the study is to investigate the evolutional relationship in the hydrologic and geologic characteristics in Tiaoshenshan area at the border between Cholan, Miaoli and Tungshih, Taichung. Patterns and characteristics of the drainage systems have been analyzed based on the topographical principles, and all the available data on landforms, geologic characteristics and the drainage development in the area are studied. Spatial method and density methods are used to set up the hydrologic characteristics for the drainage systems in the area. Spatial analysis on drainage pattern is aimed to realize both the surface and longitudinal distributions of the drainage ways. Drainage density analysis is also done to serve as the assisted data in the interpretation. And besides, S-L Index is analyzed in combination with longitudinal space analysis to obtain the more accurate knickpoint positions. The study results show that the development of drainage pattern is mainly dependent on terrain gradient and geologic structures, and is less correlated to rock properties. In the area with laterite cover on the ground surface, the drainage development is highly restricted in the laterite distribution in the area. In the area with folded rock layers, the drainage development is mainly in the strike direction of rock layer. In the area covered by Zhuolan formation, rock layers are homogeneously inclined with no specific geologic structures, the drainage development is in dip direction. The result of drainage density analysis shows a banding distribution, extending from the location to the north of Tiaoshenshan to Shihkang, where drainage density is higher than other places.
显示于类别:	[應用地質研究所] 博碩士論文

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