夯實含水量對土壩行為之影響

Influence of Water Content of Compacted Fill on Performance of Earth Dams

吳偉康(Wei-Kan Wu) ； 林曉宗(Hsiao-Chung Lin) ； 莊賢達(Shang-Da Juang) ； 謝勝彥(Sheng-Yen Hwieh)

《地工技術》 50期 (1995/06) Pp. 27-34

https://doi.org/10.30140/SG.199506.0002

摘要

夯實含水量對土壩施工中及完工後之行為均構成影響，即使是含水量控制在施工規範規定的含水量範圍內，含水量的變化仍將對大壩行為顯現差異，本文蒐集一些國內土壩施工案例，探討含水量對壩心孔隙壓力的生成、壩體安定分析、壩體沉陷及壩體之滲透性等影響，綜合上述影響，建議在可確保施工階段安全的前題下，將含水量控制在最佳含水量略偏濕側對大壩整體而言較合適。

關鍵字

含水量 ； 土壩 ； 孔隙壓力 ； 最佳含水量

並列摘要

Water content of compacted fill inside an earth dam may influence the preformance of the dam during and after construction. Minor change in water content may cause significant difference in preformance of the dam even when the water content is kept within the allowable range as specified. Case studies on several domestic earth dams have been performed. The results are discussed here by evaluating the influence of water content on build - up of pore water pressure in the core of the dam as well as on the stability, settlement, and permeability of the dam. The water content is recommended to be kept slightly higher than the optimum water content, providing the dam is stable during construction, in order to result in a better preformance of the dam.

並列關鍵字

Water Content ； Earth Dam ； Pore Pressure ； Optimum Water Content