頁籤選單縮合
題名 | 土壤保水劑對飛砂抑制效率之研究=Study on the Aeolian Sand Restrain Efficiency of Soil Water Holding Substance |
---|---|
作者姓名(中文) | 黃隆明; 黃律迪; | 書刊名 | 水土保持學報 |
卷期 | 48:2 2016.06[民105.06] |
頁次 | 頁1719-1732 |
分類號 | 434.22 |
關鍵詞 | 土壤保水劑; 飛砂; 風洞; Soil water holding substance; Aeolian sand; Wind tunnel; |
語文 | 中文(Chinese) |
中文摘要 | 本研究為瞭解土壤保水劑對飛砂抑制之效益,採取大安溪砂土,從事相關實驗,經由砂粒物性分析得知,砂粒平均含水率、密度及粒徑分別為0.5%、2.72g/cm3及0.313mm,為級配不良之砂土。而由土壤保水劑吸排水曲線及應用性分析得知,保水劑在多水時進行吸水,缺水時排水,不但有良好之可逆性,且效果持久;又當施用濃度提升時,有提高砂面膠結強度及降低土壤pH值之效果;再由百慕達草種發芽率分析得知,土壤保水劑雖不會降低發芽率,但隨濃度提升會延緩種子發芽。此外,由風洞試驗顯示,在10m/s風速下,土壤保水劑之濃度為0.1%時,飛砂抑制效率可達98.8%;而當風速達15m/s,濃度超過0.33%時,則無飛砂現象產生,因此,隨濃度提升,土壤保水劑對於抗風蝕及定砂有顯著的功效。 |
英文摘要 | This study was planned to investigate the aeolian sand control effect by soil water holding substance. According to the soil experiment results of the physical properties of the sand, the soil of Da-an river was sorted as poorly graded sandy soil, the moisture content was about 0.5%, the average particle size was about 0.313mm; the density was 2.72 g/cm3. Soil water holding substance not only had nice reversibility also lasting effect, when the moist carries on absorbing water, lacks the draining water, when the concentration was increase, the soil shear stress was be higher and soil pH was decrease but the germination potential of Bermuda grass seeds were not affect except the slow growth. As to the wind tunnel experiment, the results showed that when wind speed was 10m/s and concentration was 0.1%, could reach the aeolian sand restrain efficiency of 98.8%, additionally when wind speed increase to 15m/s and concentration more than 0.33% no aeolian sand would be found. Therefore, with the concentration increase, the aeolian sand control had significant effect. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。