| 雨滴溅蚀下压实黄土变形破坏规律研究 |
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| 引用本文： | 周春梅,王宇,吕雷,张静波,邵伟,赵梦霄.雨滴溅蚀下压实黄土变形破坏规律研究[J].水文地质工程地质,2018,0(6):93-93. |
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| 作者姓名： | 周春梅 王宇 吕雷 张静波 邵伟 赵梦霄 |
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| 作者单位： | 1.武汉工程大学土木工程与建筑学院，湖北 武汉430073；2.中交第二公路勘察设计研究院有限公司，湖北 武汉430056；3.南京信息工程大学水文与水资源工程学院，江苏 南京210044 |
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| 基金项目： | 国家自然科学基金青年基金项目资助（41002112；41807286）；武汉工程大学青年科学研究基金项目资助（2014）；中交第二公路勘察设计研究院有限公司科技项目资助（KJFZ-2015-077） |
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| 摘 要： | 针对工程建设中存在的裸露黄土路堤边坡水土流失现象，为进一步研究降雨条件下雨滴击溅对路堤边坡的破坏作用，本文通过室内模拟单雨滴溅蚀试验，观测试件表面溅蚀坑深度随时间的变化情况，分析不同地表压实度和雨滴击溅速率两种因素作用下压实黄土的溅蚀破坏规律。在此基础上，研究了压实度、含水率对黄土耐溅蚀性的影响，分析了降雨强度与土体溅蚀破坏的关系。结果表明:当溅蚀坑内存在薄层积水时，短历时降雨易使土体发生表层破坏；反之，容易产生二次溅蚀，二次溅蚀易造成黄土路堤边坡的深层破坏。
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| 关 键 词： | 压实黄土 雨滴溅蚀 溅蚀坑 入渗性 |
| 收稿时间： | 2018-04-22 |
| 修稿时间： | 2018-08-03 |
Research on deformation of compacted loess under raindrop splash erosion |
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| ZHOU Chunmei,WANG Yu,LYU Lei,ZHANG Jingbo,SHAO Wei,ZHAO Mengxiao.Research on deformation of compacted loess under raindrop splash erosion[J].Hydrogeology and Engineering Geology,2018,0(6):93-93. |
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| Authors: | ZHOU Chunmei WANG Yu LYU Lei ZHANG Jingbo SHAO Wei ZHAO Mengxiao |
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| Affiliation: | 1.School of Civil Engineering and Architecture, Wuhan Institute of Technology，Wuhan，Hubei430074，China；2.CCCC Second Highway Consultants Co，Ltd，Wuhan, Hubei430056，China; 3.School of Hydrology and Water Resources, Nanjing University of Information Science and Technology, Nanjing, Jiangsu210044, China |
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| Abstract: | Soil erosion of exposed loess slopes in construction of engineering projects is examined in this paper. In order to further study the damage effect of raining splash on compacted loess slope, the splash depth and the change in pore size with time are observed by simulating tests of the single splash erosion and the splash failure law of compacted loess under the two factors of surface compaction degree and raindrop velocity is analyzed. The impact of compactness and moisture content on the splash erosion of loess is studied. The relationship between rainfall intensity and soil splash damage is also analyzed. The results show that when there is shallow flow in the splash pits, the short duration rainfall is easy to damage the shallow layer soil. On the contrary, the second splash is produced, which is the main factor of deeper failure of the loess embankment. |
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