臺灣地形受板塊擠壓影響，地勢較為陡峭，在梅雨時期及颱風季節的氣候降雨集中，導致各種自然災害頻傳。近年也推行海綿城市理念，四處設置滯洪設施，但因經費與土地限制，較難在都市內廣泛推行。而開發相對密度低的區域雖土地取得容易，但在費用和效益上，則需謹慎思考與取決。
農塘為農民用來蓄水的設施，除了農業用途之外，還可以用來延遲洪水逕流。因此如可適度的應用農塘成滯洪設施，搭配宣導農民進行疏濬、清淤等適當管理將可成為有效的策略。除滯洪外，農塘原本的功用蓄水灌溉，也將可做為減少突發乾旱極端氣候下的對應措施。
雖水保局已經規範農塘構築工法等的相關要求，但臺灣位於地震頻繁地帶，土壩可能受地震加速度力量作用下發生潰壩。而壩體後方蓄水區因經年累月的淤積，有一層厚沉積物在塘中佔據原本蓄水的空間，此類土壤在泡在水中時相當軟弱，在受一定震度的地震時將會發生軟化甚至達到土壤液化現象，此時對壩體將會產生額外側向壓力，可能造成壩體受損甚至發生潰壩。
因此本研究提供一套可考慮包含因淤積土導致之震害的完整評估方法，該方法以Taylor(1937)提出的穩定數(N)為基礎，再由Bell(1966)根據穩定數(N)提出無因次參數(λ)。採用極限平衡法進行大量變更參數分析，並將分析結果以回歸線製成穩定性圖表與圖表公式化。
研究結果顯示，此圖表能透過現地參數快速評估壩體穩定性，可以評估壩體在不同大小地震力、不同蓄水高度、不同沉積物厚度、不同土壤參數條件下的壩體穩定性。使工程師能針對不同區域不同條件的土壩進行震害潛勢判斷，以評估土壩的安全性。

The terrain of Taiwan is affected by plate extrusion, hence, the terrain is relatively steep. During the rainy season, the intense rainfall resulted in frequent natural disasters. In recent years, the concept of sponge city has also been implemented, and flood detention facilities have been set up everywhere for that. However, due to cost and land constraints, it is difficult to widely implement it in cities. In lightly populated areas, although the land is easy to obtain, the benefit-cost ratio must be considered.
On the other hand, farm pond is a convenient water storage facility for farmers, and in addition to agricultural use, it can also be used to attenuate flood runoff and provide water in drought periods. However, Taiwan is located in a seismically active area, the deposited sediment over the years in the rear side of the dam during the earthquake results in an increase soil-water pressure on the earth dam. When the soil liquefies on the rear side the dam, additional lateral pressure will be generated on the dam body, which may cause damage to the dam body or even dam failure. As a result of the dam's failure, tragedies and property losses in the downstream area could be occurred. To enable the Farm Pond to play a significant role in both flood detention and irrigation, the Soil and Water Conservation Bureau has regulated the relevant guidelines for the construction methods of agricultural ponds.
The present study presents a set of seismic stability evaluation methodology for Farm Pond earthen dams in various regions, allowing for a conviaent assessment of seismic safety for earthen dam. This method is based on the stability number N developed by Taylor (1937), and Bell (1966) who proposed later to make the chart more concise specifically with a dimensionless parameter (λ). Using limit equilibrium method (LEM) for the analysis of hundreds of different cases and their calculation results are used to trace the regression line to establish a stability chart. This chart would facilitate the rapid assessment of stability by calculating:(1) the allowable dam height.(2) the safety factor of the dam body for the seismic force of different magnitude.(3) stability estimation of dam under various storage heights and thickness of sedimentation. The method is able to monitor the regional dam stable state and instantly determine the regional dam allowable water storage and sedimention with a consideration of seismic event.

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