地滑地粘土電氣滲透排水法之研究

Studies on the Electro-Osmosis Drainage with Different Chemicals for the Landslide Clay

陳慶雄(Ching-Hsiung Chen) ； 謝豪榮(Hao-Jung Shieh)

《中華水土保持學報》 19卷1期 (1988/05) Pp. 58-70

https://doi.org/10.29417/JCSWC.198805_19(1).0005

摘要

電氣滲透排水法與化學穩定藥劑處理法，均爲地滑防治工法中，屬於改良土性方法之一類別。電氣滲透法對於飽和含水量之細顆粒與粘質性之土壤具有良好之排水效果，而穩定藥劑之處理，則對於土壤之穩定性及力學強度之加強具有很大之功效。本試驗之目的係爲探討兩種方法相互配合使用時，其對地滑防治上之功效，而以嘉義縣中埔鄉石硦地滑地之粘土，在室內添加NaCl，KCl，MgCl_2、6H_2O丶CaCl_2，FeCl_2、6H_2O及AlCl_3。6H_2O等藥劑處理後，進行電氣滲透排水試驗，藉以探討其對排水量和增加抗剪強度之影響效果。經試驗結果得知，藥劑處理後之電氣滲透，不但可以增加排水之效果，並可使土壤之抗剪強度增加，而達到穩定地滑地土壤之目的。其中以氯化鉀處理之排水量爲最大，而以較高價離子對增加抗剪強度之效果爲佳。

關鍵字

地滑地粘土 ； 電氣滲透排水 ； 化學穩定藥劑

並列摘要

Electro-osmosis can help the soil drain excess water for the fine-particled and clay soil. But the adding chemicals can only Induce particle flucculation. This experiment used above two methods In order to find their effects on landslide soli stabilization. The soil samples were collected from Chung-Pu of Chal-Yi, then treated with NaC1, KCl, MgCl_2．6H_2O, CaCl_2, FeCl_3．6H_2O and AlCl_3．6H_2O. Electrical current were plug into above treated soil samples. Afterward, we tested the pH, concentration of cation, quantity of water drained and shear strength of soil. The results showed that. using the electro-osmosis on landslide soil with chemical treatments. the quantity of water drained and shear strength of the soil were both greatly increased. Potassium chloride, which is high in hydration, can also Increase the rate of drainage and less time required for draining the excess water in soil. The higher valence cation could better improve the shear strength of the soil.

並列關鍵字

landslide clay ； electro-osmosis drainage ； chemical stabilization