木质素含量对客土喷播层抗剪强度影响的试验研究  

Effect of Lignin Content on the Direct Shear Strength of Sprayed Soil Base Layer in Slope Restorations

作　　者：李映[1] 陈金宏[1] 左双英[1] 叶明亮[1] 

机构地区：[1]贵州大学资源与环境工程学院,贵阳550025

出　　处：《土工基础》2014年第2期121-123,149,共4页Soil Engineering and Foundation

基　　金：贵州矿山开采成灾模式及预警预报关键技术研究(黔科合重大专项字[2011]6004)

摘　　要：防止水土流失和恢复生态环境是高速公路边坡生态防护的主要目的。根据目前国内外边坡生态防护的现状和发展趋势,介绍了一种添加木质素粘结基材的客土喷播技术。通过对木质素为粘结基材的客土喷播厚层的直剪试验和含水率的控制进行综合分析,论证了木质素粘结基材替代其他化学粘结基材进行道路边坡绿化的技术可行性,并且通过比选,优化木质素粘结基材的配比。Minimizing the soil erosion and maintain the ecological environment are the major objectives of the bioengineering restoration of slopes. This paper presents the state-of-the-art of bioengineering methods in the slope stabilization applications. The sprayed soil base layers with lignin as a bonding agent technology is also introduced in the paper. The direct shear tests on lignin bonded soil base layer samples and the moisture content control of the base iayer materials are examined. The feasibility of using lignin as the bonding agent instead of other bonding materials in the bioengineering method of slope stabilization and vegetation are also discussed in the paper. The optimum material ratios of bonding soil base layers using lignin is determined based on the testing comparisons.

关 键 词：边坡 木质素 客土喷播 边坡生态防护 

分 类 号：TU411[建筑科学—岩土工程]