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 > 基于模糊综合评判的崩岗重力侵蚀评价方法 亚热带水土保持 2013,25 (3) 1-5，21
Position: Home > Articles > Gravitational Erosion Assessment Method for Slope Disintegration based on Synthetic Fuzzy Evaluation Subtropical Soil and Water Conservation 2013,25 (3) 1-5，21

基于模糊综合评判的崩岗重力侵蚀评价方法

作  者：
张晓明;丁树文;李双喜
单  位：
华中农业大学资源与环境学院;长江水利委员会长江流域水土保持监测中心站
关键词：
模糊综合评判法;抗剪强度指标;崩岗;干湿效应
摘  要：
发育于花岗岩出露区的典型崩岗岩土受干湿效应影响,致使坡体在重力作用下产生崩坍,这是崩岗形成后最主要的侵蚀形式。通过对原状土进行5种干湿水平处理,采用直剪试验研究干湿效应下崩岗岩土抗剪强度及其指标变化规律。结果显示:从风干到增湿过程,抗剪强度及其指标衰减明显,粘聚力c下降幅度最大为92%,而内摩擦角φ最大降幅为48%。随着垂直压力递增,抗剪强度增大。此外,基于不同干湿效应下岩土抗剪强度指标变化规律,运用模糊综合评判法对不同干湿水平、干湿阶段崩岗坡体稳定性等级(重力侵蚀)进行评价,并讨论了完善该模型的途径,可为崩岗危害性分级、针对性治理提供技术支撑。
译  名：
Gravitational Erosion Assessment Method for Slope Disintegration based on Synthetic Fuzzy Evaluation
作  者：
Zhang Xiaoming;Ding Shuwen;Li Shuangxi;College of Resources and Environment,Huazhong Agricultural University;Yangtze Valley Soil and Water Conservation Monitoring Station of Changjiang Water Resources Committee,Ministry of Water Resources;
关键词：
fuzzy synthetic evaluation;;shear strength indices;;slope disintegration;;drying-wetting effect
摘  要：
The typical collapsed rock soils derived from granite outcropped area is significantly affected by the wetting-drying effect that causes collapse under the influence of gravity due to shear strength decrease. It is the major erosion form of slope disintegration. Direct shear strength tests with five wetting and drying treatments were conducted to identify effect of wetting- drying on shear strength and indices change rules of the slope disintegration. The results show that as wetting- drying levels increased,the shear strength and indices decreased obviously. The maximum decline extent in cohesion c was 92%,and in internal friction angle φ was 48%. While,shear strength increased with vertical loads. A fuzzy synthetic evaluation was performed for the evaluation of the slope disintegration stability( gravitational erosion) based on shear strength indices under wetting- drying levels and stages. It was discussed the improvement methods of the assessment model that would classify the harmfulness degrees of the slope disintegration and provide the technical support for erosion control.

相似文章

导出引用
计量
文章访问数: 8
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