风蚀环境下膨胀性泥岩路堑边坡防护措施应用研究

Application Research on Slope Protection Measures of Railway Cutting in Swelling Mud Rock under the Environment of Wind Erosion

针对兰新第二双线新疆段膨胀性泥岩路堑边坡受膨胀性及强风蚀的影响,研究泥岩路堑边坡坡率及防护措施。通过工程类比、规范规定以及理论计算分析,从边坡坡率、分级高度以及边坡防护形式的选择上进行技术研究。解决膨胀性泥岩边坡膨胀力释放引起的防护破坏及风蚀破坏的问题,保证边坡稳定安全。工程的成功实施对新疆干旱地区泥岩路堑边坡防护具有较强的借鉴意义,为设计积累经验及规范修编提供参考依据。

Aiming at the influences on the railway cutting because of the expansibility and strong wind erosion of swelling mud rock in Xinjiang section of the second double line of Lanzhou-Xinjiang Railway,the slope ratio of the cutting in mud rock and the protection measures were studied in this article.Meanwhile,technical researches were carried out after considering the slope ratio,stepped height and the slope protection types by means of engineering analogy,standards execution and theoretical calculation.The purposes of the research is to solve the problems of the destructions of slope protection which are caused by the expansion force of swelling mud rock and the wind erosion so as to ensure the stability and safety of the cutting slope.The successful achievement of the project can serve as a mirror for slope protection of railway cutting in mud rock of drought region in Xinjiang,as well as can accumulate design experience and provide reference for standard revision.