頁籤選單縮合
題名 | 提高異質性地下水文參數精確性之研究=A Study of Promotion the Accuracy of Groundwater Hydrological Parameters |
---|---|
作者姓名(中文) | 林賢宗; 余化龍; 譚義績; 陳主惠; |
作者姓名(外文) | Lin, Hsien-tsung; Yu, Hwa-lung; Tan, Yih-chi; Chen, Chu-hui; |
書刊名 | 臺灣水利 |
卷期 | 58:3=231 2010.09[民99.09] |
頁次 | 頁34-46 |
分類號 | 443.67 |
語文 | chi |
關鍵詞 | 有效流通係數; 抽水試驗; 伴隨狀態方法; 禁忌演算法; Effective transmissivity; Pumping test; Adjoint state method; Tabu search; |
中文摘要 | 水層地質特性的調查是瞭解地下水流通特性的重要工作,然目前利用抽水試驗的方式求得簡單的地下水參數,諸如有效流通係數、有效水力傳導係數、儲水係數等等。本研究利用伴隨狀態方法配合禁忌演算法運用於地下水文有效參數推估以提高精確性;再利用曲線法、直線法所推估參數代入Papadopulos 解析解及幾何平均法與算術平均法以推估水文參數以代表區域含水層的平均特性。由結果顯示,曲線法與直線法所推估參數及目標函數誤差較大;修正型禁忌演算法所推求目標函數誤差值較佳,其原因修正型禁忌演算法在優選過程中,可以減少人為誤差以致目標函數提高;因此所推估有效參數近似於幾何平均值,足以代表含水層之特性。 |
英文摘要 | Investigation of hydrological property of the aquifer is a key work in groundwatermodeling. Although it is well-known that there is a huge of variability among the spacedistribution of the aquifer parameters, the analysis of the temporal evolution of pumpinduceddrawdown is a common approach to estimate the effective transmissivity and storagecoefficients in the heterogeneous aquifer. In this study, we integrated an adjoint state methodinto the Tabu search method, called "Modified Tabu search Method (MTM)", and applied itto estimate the effective aquifer parameters. And the identified values of parameters by theMTM are compared with type-curve method (TCM), straight-line method (SLM), the geometricand the arithmetic means of local aquifer parameters. Results show that there are larger errorvalues of the estimated parameters and objective functions by TCM and SLM cooperated withPapadopoulos' solution, and there are better representative and effective aquifer parametersby using MTM. During the optimal process by MTM, the artificial errors are reduced, and thevalue of objective functions is lowered. Therefore, the estimation effective parameter by MTMis very close to the geometric mean, and it is enough to represent the property of the aquifer. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。