中文摘要：

通过麦秸秆和石灰加筋黄土对黄土公路边坡进行坡面防护,试图解决黄土公路边坡因强降雨引起的坡面冲蚀破坏问题。为了研究麦秸秆加筋黄土的抗侵蚀性能及其防护效果,制备了原状黄土、麦秸秆加筋黄土、加石灰的麦秸秆加筋黄土试样,进行直剪试验、崩解性试验和抗冲刷性试验,分析抗剪强度特性、崩解性以及抗冲性的变化规律,评价麦秸秆加筋黄土的抗冲蚀性能,最后通过模拟降雨冲刷对比试验,验证麦秸秆加筋黄土的防护效果。研究结果表明：直剪试验中麦秸秆加筋增强了土体的抗剪强度,主要表现为粘聚力随着龄期的增长呈明显增长趋势,最大粘聚力增长率达到了311.6%,内摩擦角的增长趋势较不明显,最大内摩擦角增长率约为50%,加石灰的麦秸秆加筋黄土的粘聚力、内摩擦角比不加石灰的分别提高了44.5%和19.8%,石灰的加入改善了麦秸秆的加筋效果;崩解性试验和抗冲试验中,麦秸秆加筋降低了土体的崩解速率,提高了土体的抗冲刷系数,最小崩解速率降低了79.9%,最大抗冲刷系数增长了156.9%,土体的抗蚀性、抗冲性得到明显提高,石灰的加入进一步增强了麦秸秆加筋黄土的抗蚀、抗冲性;降雨冲刷试验明显地显示了麦秸秆加筋黄土防护效果,最大累计冲蚀量降低率达到41.9%,加石灰的麦秸秆加筋黄土的防护效果比不加石灰的防护效果更好。采用麦秸秆加筋黄土是黄土边坡值得推广的一种防护措施。

英文摘要：

Erosion of loess highway slope, which is caused by heavy rain, is to be solved by reinforcing loess with wheat straw and lime to protect the loess highway slope. In order to study the anti-eroding property and protective effect of reinforced loess with wheat straw, some samples were prepared, including undisturbed loess, reinforced loess with wheat straw, and reinforced loess with wheat straw and lime. Then direct shear tests, disintegration tests and anti-scouring tests were carried out to analyze the shear strength, disintegration and anti-scouring were analyzed and to evaluate the performance of anti-erosion of reinforced loess with wheat straw.Finally, simulated rainfall comparison tests were conducted to verify the protection effect of the reinforced loess with wheat straw. The results show that reinforcement with wheat straw enhances the shear strength of soil. To be specific, cohesion has a obvious growth trend with the growth of age, and the maximum increment of cohesion reaches to 311.6 % ; the growth trend of frictional angles is not significant, and the maximum increment of frictional angle reaches approximately to 50 %; the cohesion and frictional angles of reinforced loess with wheat straw and lime increase by 44.5% and 19.8% compare with that without lime, which indicates that lime improves the reinforcement effect of wheat straw. In disintegration tests and anti-scouring tests, reinforcement with wheat straw reduces the disintegration ratio of soil, and enhances the anti-scouring coefficient, the minimum disintegration ratio decreases by 79. 9% while the maximum anti-scouring coefficient increases by 156.9%; the anti-scouring and anti-eroding ability of soil are improved significantly; lime enhances the anti-scouring and anti-eroding ability of the reinforced loess with wheat straw. The protection effect of the reinforced loess with wheat straw is significant, the maximum decreasing ratio of accumulated erosion amount reaches to 41.9%, and the protection effect of the reinforced loess with wheat st