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年度	108	專案性質	實驗性質
專案類別	模場試驗	研究主題	自訂
申請機構	國立交通大學	申請系所	土木工程研究所
專案主持人	張良正	職等/職稱	教授
專案中文名稱	新型光纖光柵多深度監測於水文地質與熱傳參數異質場推估技術之發展
中文關鍵字	水文地質,熱傳參數,光纖光柵,異質場
專案英文名稱	Development of a novvel tevhnology to identify the heterogeneous hydrogeological and geothermal parameters by using multi-depths fiber Bragg grating sensors.
英文關鍵字	Hydrogeological parameters, geothermal parameters, fiber Bragg grating sensor, heterogeneity, joint
執行金額	1,399,981元
執行期間	2019/1/1 至 2019/11/30
計畫中文摘要	本研究之主要目的為透過注藥時期量測多井多深度的水位與溫度進行研究場址之三維水文地質參數場推估，以建立精準的流場，協助預測污染團未來可能的流佈，以提供預警監測管理或建議、協助規劃更有效益的整治系統，以及掌握灌注後的整治藥劑分布情形。本研究本年度已完成兩次注藥，一次為重力注藥（五月），另一次為DPI注藥（十月）。DPI注藥期間共使用五套FBG觀測系統，一套含三組FBG水壓水溫感測器。此外，FBG感測器已進一步調整光纖快速接頭，增加光訊號的強度約50%以上。而在光纖光柵感測器之回收再利用流程部分，本研究增加了儀器的係數標定與環測（10-50oC，環測時間9100分鐘），讓整個回收流程更趨完整。本研究使用注藥期間蒐集之多組觀測資料推估場址之三維水文地質參數場，推估結果再與跨孔井下電阻施測所得電阻率變化比較，兩者結果一致，顯示推估參數之合理性。最後，本研究以推估之參數場設計案例，模擬藥劑灌注後之三維傳輸路徑與流佈，以找出藥劑之主要流向與無法抵達之區域（盲點區域），說明此模式具有展現藥劑三維流佈之能力，可有效協助廠商辨識藥劑傳輸路徑並適當調整注藥策略，以期讓藥劑可抵達注藥盲點區域，充分與污染物混合。後續本研究將持續與整治廠商進一步合作，將其注藥規劃輸入模式中模擬，並提供廠商注藥後之可能三維藥劑流佈資訊，以提升其污染整治之成效。
計畫英文摘要	The purpose of this study is to develop the accurate three-dimensional hydrogeological parameters fields based on the head and temperature measurements during the remediation agent injection events in the selected contaminated site. The accurate flow field enables us to understand and predict the spatial distribution of the plume, provide the necessary information for the design of the monitoring well groups of the early warning system, develop the effective site remediation system, and outline the spatial distribution of the major transmission after the injection of remediating agents. In this year, this study has completed two remediation agent injection events in May and Oct., respectively. During the injection event in Oct., there were five FBG sensing system, consisting of three FBG piezometer and thermometers each, installed in the selected five monitoring wells. Moreover, the connector of optical fiber is also improved to enhance the strength of the optical signal and obtain stable measurements. For the FBG recycle procedure, the FBG’s temperature - pressure cycling tests, used for FBG parameter calibration, are added to the standard procedure. The data collected during the injection events have been used to estimate the three-dimensional hydrogeological parameters of the study site, and these estimates are examined by the rate of electrical resistivity change from the cross-hole electrical resistivity survey, revealing the estimates of hydrogeological parameters are reasonable. Finally, these parameters are used to develop a solute transport model to study the transport pathway of the remediation agents. The results show the possible major pathway of the agents and identify the places where the agent may not reach. These findings demonstrate that the developed solute transport model based on the estimated parameters can predict and display the possible transport pathway of the agents. Shortly, we will cooperate with the remediation company to enhance its remediation performance by improving its agent injection strategy based on this developed model.