自受壓飽和含水層抽取地下水而導致之地層下陷，其分析解可作為地層下陷之近似模式，但式中包含兩控制參數－擴散係數D/sub o/與抽水係數N/sub o/。用於預測時，其值須為已知。根據實測與調查資料可求得兩係數的歷年值及由此而得的估算值。近似模式應用於雲林與嘉義沿海沉陷地區，依據觀測點之所在分成十一區，且求得兩係數之歷年值、估算值，並予以簡易預測。 The analytical solution of the land subsidence caused by an overdraftof groundwater from a confined aquifer could be deemed as anapproximate model, which consists of two controlling parameters, thediffusivity Do and the pumping coefficient No. In field applicationthese two coefficients should be known in advance. Field measurementsand the survey of well will yield the values of above two coefficientsacross each year, from which estimated values of coefficients can beobtained in turn. The approximate model is applied to Yuan-Chiaregion, which is further divided into 11 sub-regions based upon theobserving site. Estimated values of Do and No in these 11 sub-regionsare obtained, and a simple prediction is performed.
關聯:
第十二屆水利工程研討會論文集(上冊)=Proceedings of the 12th Hydraulic Engineering Conference，頁G 105-114
