| 研究生: |
毛雅盈 Mao, Ya-Ying |
|---|---|
| 論文名稱: |
土石壩殼層降雨入滲行為監測及滲流預警值推估 Determination of Threshold Seepage Discharges of a Earth-rockfill Dam with Infiltration Monitoring Systems on Shell |
| 指導教授: |
張文忠
Chang, Wen-Jong |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 土木工程學系 Department of Civil Engineering |
| 論文出版年: | 2018 |
| 畢業學年度: | 106 |
| 語文別: | 中文 |
| 論文頁數: | 93 |
| 中文關鍵詞: | 無線監測模組 、體積含水量量測 、滲流量 、降雨 、滲流預警值 |
| 外文關鍵詞: | wireless sensing module, volumetric water content sensing, seepage discharge, rainfall, threshold seepage discharge |
| 相關次數: | 點閱:170 下載:7 |
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本研究以於水庫下游殼層建立之降雨入滲行為長期監測系統,針對水庫下游殼層入滲對下游濾層量水堰之量化影響進行探討。於大壩拋石下游坡面之殼層上層、中層、下層裝置土壤分層含水量無線監測模組形成無線監測網路,即時連續監測分層土壤水分變化,用以對水庫下游殼層之降雨入滲行為進行長期監測,由含水量監測結果與雨量測站資料做進行比對,顯示系統可即時反應現地降雨事件。應用統計分析軟體SPSS進行量化分析,藉以了解降雨、水庫水位及壩體滲流量之間的相互關係,將降雨對於壩體滲流量所造成之影響加以排除,進而求得實際由庫區上游所提供之壩體滲流量與水庫水位間之迴歸曲線關係,可供水庫管理單位作為評估大壩心層完整性之參考。由歷年量水堰監測結果及降雨資料顯示,當庫區發生降雨事件時,部分降雨量確實會經由壩體下游殼層入滲至濾層形成額外之滲流量,影響量水堰之壩體滲流量量測值,將此增量列入考量範圍才能更嚴謹的進行壩體安全之滲流預警值之推估。
Constructed a wireless sensing network by using the soil wireless sensing modules to continuously monitor the soil volumetric water content changes for long-term monitoring of rainfall infiltration behavior on the downstream shell of dam. Monitoring results show that change of volumetric water content fit rainfall event. To understand the relationship between rainfall, reservoir level and seepage discharge of dam by statistical analysis method, then obtain the regression curve between reservoir level and seepage discharge that provided by the upstream of reservoir, can be used as a reference for assessing the integrity of the dam's core layer. Monitoring results of flow measuring weir and rainfall show that the rainfall has a significant effect on the measurement value of flow measuring weir of downstream shell, so it is necessary to take the impact of rainfall into consideration to determine the threshold seepage discharges of a earth-rockfill dam.
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