中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 黄土地区降雨的优势入渗深度 水土保持通报 2017 (3) 231-236
Position: Home > Articles > Advantage Infiltration Depth of Rainfall in Loess Area Bulletin of Soil and Water Conservation 2017 (3) 231-236

黄土地区降雨的优势入渗深度

作  者：
同霄;彭建兵;朱兴华;马鹏辉
单  位：
西部矿产资源与地质工程教育部重点实验室;长安大学地质工程与测绘学院
关键词：
黄土;降雨入渗;降雨监测;优势渗流通道;颗粒流
摘  要：
[目的]分析黄土地区降雨入渗深度,为研究黄土滑坡破坏机理提供依据。[方法]通过现场观测实验监测不同深度土体的含水量变化趋势,并基于颗粒离散元方法对降雨入渗过程进行数值计算。[结果]监测结果表明黄土地区降雨入渗深度不超过1.5m。进一步通过数值计算发现:优势通道入渗的深度和裂缝几何尺寸有关,裂缝越深、越宽,降雨入渗的深度越大,影响范围越广,且裂缝的几何形态随着降雨入渗过程的发展而发生变化。[结论]黄土降雨入渗分为非饱和入渗和优势通道入渗2种,非饱和入渗深度有限,优势通道入渗深度更大,易诱发大规模滑坡灾害。
译  名：
Advantage Infiltration Depth of Rainfall in Loess Area
作  者：
TONG Xiao;PENG Jianbing;ZHU Xinghua;MA Penghui;College of Geology Engineering and Geomatics,Chang'an University;Key Laboratory of Western Mineral Resources and Geological Engineering of Ministry of Education;
关键词：
loess;;rainfall infiltration;;rainfall monitoring;;preponderance flow path;;particle flow
摘  要：
[Objective]The depth of rainfall infiltration in loess region was analyzed in order to provide the basis for studying the mechanism of loess landslide.[Methods]The variations of soil water content at different depths were monitored by field observation,and the numerical simulation of rainfall infiltration process was carried out based on the particle discrete element method.[Results]The monitoring results showed that the depth of rainfall infiltration in loess area was less than 1.5m.Numerical calculation found that the dominant channel infiltration depth is related to the geometry of the cracks,the deeper or the wider of the cracks,the deeper and wider of the rainfall infiltration.Besides,the cracks had different geometry characteristics in the process of rainfall infiltration.[Conclusion]The rainfall infiltration in loess can be divided into 2types:unsaturated infiltration and dominant channel infiltration.The depth of unsaturated infiltration is limited,but the penetration depth of the dominant channel is comparatively larger that can potentially induce largescale landslide disaster.

相似文章

导出引用
计量
文章访问数: 10
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46