AHP應用於山區道路邊坡生態工法之評估

Using AHP in Evaluation of the Ecological Engineering Method for Road Slopes in Mountain Areas

陳冠宇(Kuan-Yu Chen)

指導教授 ： 林盛隆

朝陽科技大學/理工學院/環境工程與管理系/碩士(2010年)

摘要

台灣這幾年流行的上山休閒風潮，將民眾帶往山區發展，已對土地超限使用。大量使用傳統工法穩固山區道路邊坡，在南投的山區處處可見，其自然環境在歷經九二一之後，更加脆弱，根本無法因應大自然反撲的力量，每逢大雨，山區道路邊坡的災情更慘重。有鑑於此，國內開始推動生態工法，運用於南投水里鄉的山區道路的邊坡，以創造安全堅固且優質的環境。
本研究運用層級分析法調查南投縣水里鄉山區道路採用生態工法之情形，並建立一個當地適用的生態工法評估模式。在安全的前提下，就生態、環境、經濟及施工等四個層面和十六項評估準則，統計分析並計算山區道路邊坡防治運用生態工法與傳統工法的決策層面及評估準則的權重，並依其權重為依據，建立綜合評估方法。最後再以台21線道路邊坡採用生態工法的實際案例，檢驗本研究建立綜合評估方法。
研究結果顯示，受訪者認為以生態工法施工之邊坡工程優於以傳統工法為之，較能有效的保護邊坡；在所選定的評估準則中，維護原生植被(0.118)得到最高的權重，其次是減緩環境干擾(0.107)和多種類環境(0.098)。依本研究得到之權重建立的綜合評估方法，可應用於南投山區道路邊坡之評估，希望這些結果可提供決策者參考。

關鍵字

層級分析法 ； 邊坡工程 ； 評估方法 ； 生態工法

並列摘要

In recent years, the trend of going mountains for leisure time brings the public to develop the mountain areas. It causes the overuse of the lands in Taiwan. Huge amounts of the traditional structure methods being used in the mountain roads as well as the slopes are found in most mountain areas in Nantou County. After the 921 earthquake, these areas are frailer than before. It could not bear the strength of the natural fury when there were heavy rains. Therefore, the ecological engineering method are proposed and employed in the structures of the mountain road slopes in the Shuili Town of Nantou County, to create safe and the high quality environment.
This study employed the analytic hierarchy process (AHP) to investigate the situation of the mountain road slopes paved by the ecological engineering method in the Shuili Town of Nantou County, then to establish an integrated evaluation method of the ecological engineering method that is suitable for the mountain road slopes. Under the safe consideration, using statistical analysis to weigh the various policy-making stratification planes, by referring to the four aspects, i.e. the ecology, environment, economical and the construction stratification plane, and the sixteen assessment criteria. Then, according the result, an integrated evaluation method was established and applied in an actual case which using the ecological engineering method to protect the slope on the 21st highway.
The result shows that the ecological engineering method is better than the traditional engineering method. It’s effective to protect the slops. In the selected evaluation criteria, the factor of maintaining original plants scored the highest weighting (0.118), followed by factors of mitigating the disturbance to environment (0.107) and bio-diversity(0.098). According to the weighting factors got in the study, an evaluation method was established and adapted in the selected mountain road slopes in Nantou County. We hoped that the results could provide the policy-makers a solid information in the future decision making.

並列關鍵字

slope engineering ； evaluation method ； analytic hierarchy process ； ecological engineering method

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