本文選題：公路路基 + 稻秸稈泥皮�。� 參考：《中國水土保持科學(xué)》2017年02期

【摘要】：為研究晴雨天氣下,稻秸稈泥皮護(hù)坡材料對(duì)路基水分遷移的影響,在測(cè)定該材料滲透系數(shù)和干濕循環(huán)抗?jié)B性能基礎(chǔ)上,進(jìn)行室內(nèi)路堤邊坡模擬試驗(yàn),分別在連續(xù)的自然照射和坡面沖刷條件下,測(cè)定路基內(nèi)部含水量變化,以此分析稻秸稈泥皮護(hù)坡材料在極端干旱和連續(xù)降雨條件下,對(duì)路基內(nèi)部水分遷移特征的影響。結(jié)果表明:稻秸稈泥皮材料滲透系數(shù)較小,干濕循環(huán)不會(huì)導(dǎo)致其抗?jié)B性能明顯降低;該材料能有效避免坡面泥皮結(jié)構(gòu)失水干裂,減少干旱天氣下,路基內(nèi)部水分向外過度蒸發(fā)遷移,保證路基含水量穩(wěn)定,坡面植被發(fā)育后,保水防裂作用更加明顯;該材料具備較強(qiáng)的水分隔阻能力,有效減少強(qiáng)降雨期間的坡面雨水入滲及水分進(jìn)一步向路基內(nèi)部擴(kuò)散遷移,同時(shí)有效促進(jìn)植被生長,泥皮+稻秸稈+草根復(fù)合泥皮結(jié)構(gòu),能進(jìn)一步提高坡面抗雨水沖蝕性能,形成可靠的邊坡生態(tài)防護(hù)系統(tǒng)。該研究對(duì)公路路基設(shè)計(jì)與施工具有重要的指導(dǎo)意義。
[Abstract]:In order to study the effect of rice straw mud skin slope protection material on the water migration of Subgrade under the clear rain weather. On the basis of measuring the permeability coefficient of the material and the anti seepage performance of dry and wet cycle, the indoor embankment slope simulation test was carried out. Under the condition of continuous natural irradiation and slope erosion, the change of water content in the subgrade was determined, and the rice straw was analyzed. The results show that the permeability coefficient of the rice straw mashed material is small and the dry and wet cycle will not lead to the decrease of its permeability. The material can effectively avoid the water loss and dry cracking of the mud crust in the slope, and reduce the internal water in the subgrade under the dry weather. The water content of the subgrade is stable and the water content of the subgrade is stable. After the vegetation is developed, the water preservation and anti cracking effect of the slope is more obvious. The material has strong water barrier ability, effectively reduces the infiltration of the slope surface and the diffusion of water to the subgrade, and effectively promotes the growth of the vegetation, and the mud skin + rice straw + grass. The composite mud skin structure can further improve the erosion resistance of the slope, and form a reliable ecological protection system for slope. This study has important guiding significance for the design and construction of highway subgrade.
【作者單位】： 長沙理工大學(xué)土木與建筑學(xué)院;廣西交通科學(xué)研究院有限公司;
【基金】：國家自然科學(xué)基金“路基土的水分?jǐn)U散和冷凝遷移及路基軟化機(jī)理研究”(51178063),“生態(tài)防護(hù)邊坡的雨水入滲及其對(duì)植被根系固土防滑作用的影響機(jī)理研究”(51578082) 廣西交通科學(xué)研究院科技項(xiàng)目“類植物根系有機(jī)坡面防護(hù)技術(shù)研究”(KJ2014-014)
【分類號(hào)】：U416.1

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本文編號(hào)：1996974