基于模型试验的泥石流坡面物源启动预警模型
Warning model study of debris flow slope source starting based on experimental method
查看参考文献15篇
|
文摘
|
为进一步探明银洞子沟物源区坡面物源启动机理与降雨的相关性,在进行详细的现场考察与工程勘察工作后选取了典型模型体,并采用20余组人工降雨物理试验方法将降雨强度与坡度设为控制变量,研究了4种坡形、5种雨强条件下,坡面松散物源的失稳机制及破坏模式。试验结果揭示了地表变形与地下物理力学参数变化的定量响应关系,并基于试验发生破坏的临界雨量,建立了银洞子沟传统I-D预警模型。之后提炼可靠预警参数(坡度、深部体积含水率) ,通过数学回归分析方法并采用Exponential模型,得出IGD、IGM多参数新型预警判别式,实现了传统I-D模型的有效修正,并具一定的可靠性和实用价值。 |
|
其他语种文摘
|
To further realize the correlation between rainfall and the starting mechanism of the slope debris flow in the source area of Yindongzi gully,a typical model was selected after a detailed fieldwork and engineering investigation. The rainfall intensity and gradient were set as control variables using 20 large artificial rainfall physical model tests under four gradients and five rainfall intensity conditions to research the instability mechanism and failure patterns of the slope debris flow. The experimental results revealed the starting and failure model of the source of the loose slope and the response relationship of the surface deformation and the underground physical mechanical parameters. Then,a traditional I-D ( rainfall intensity—duration) early warning model was established. Next,reliable warning parameters ( i. e. gradient and moisture content) were extracted and the exponential model and means of the mathematical regression analysis were used to determine the IGD and IGM multi-parameter forecast model,while the traditional model was effectively modified for dependability and practical utility. |
|
来源
|
水科学进展
,2018,29(1):64-72 【核心库】
|
|
DOI
|
10.14042/j.cnki.32.1309.2018.01.008
|
|
关键词
|
坡面物源
;
启动
;
人工降雨模型试验
;
预警临界值
;
滑坡
|
|
地址
|
1.
中国科学院水利部成都山地灾害与环境研究所, 四川, 成都, 610041
2.
中国科学院大学, 北京, 100049
3.
中国地质科学院地质力学研究所, 北京, 100081
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1001-6791 |
|
学科
|
水利工程 |
|
基金
|
国家自然科学基金资助项目
|
|
文献收藏号
|
CSCD:6226173
|
参考文献 共
15
共1页
|
|
1.
Zhang S. Impact of the 2008 Wenchuan earthquake in China on subsequent long-term debris flow activities in the epicentral area.
Geomorphology,2017,276:86-103
|
被引
13
次
|
|
|
|
|
2.
Berti M. Probabilistic rainfall threshold for landslide occurrence using a Bayesian approach.
Journal of Geophysical Research,2012,117(F04006):1-20
|
被引
1
次
|
|
|
|
|
3.
Raia S. Improving predictive power of physical based rainfall-induced shallow landslide models: a probabilistic approach.
Geoscientific Model Development,2014,7:495-514
|
被引
15
次
|
|
|
|
|
4.
周伟. 汶川震区暴雨泥石流发生的降雨阈值.
水科学进展,2013,24(6):786-793
|
被引
26
次
|
|
|
|
|
5.
Staley D M. Prediction of spatially explicit rainfall intensity-duration thresholds for post-fire debris-flow generation in the western United States.
Geomorphology,2017,278:149-162
|
被引
4
次
|
|
|
|
|
6.
张少杰. 基于水文过程的泥石流预报中前期有效降水量的确定方法.
水科学进展,2015,26(1):34-43
|
被引
7
次
|
|
|
|
|
7.
Younus A K. Critical antecedent rainfall conditions for shallow landslides in Chittagong city of Bangladesh.
Environment Earth Sciences,2012,67:97-106
|
被引
1
次
|
|
|
|
|
8.
余斌. 浅层滑坡诱发沟谷泥石流的地形和降雨条件.
水科学进展,2016,27(4):542-550
|
被引
20
次
|
|
|
|
|
9.
Huang J. Determination of rainfall thresholds for shallow landslides by a probabilistic and empirical method.
Natural Hazards and Earth System Sciences,2015,15(12):2715-2723
|
被引
3
次
|
|
|
|
|
10.
倪化勇. 中国泥石流起动物理模拟试验研究进展.
水科学进展,2014,25(4):606-613
|
被引
16
次
|
|
|
|
|
11.
陈晓清. 滑坡转化泥石流起动的人工降雨试验研究.
岩石力学与工程学报,2006,25(1):106-116
|
被引
57
次
|
|
|
|
|
12.
倪化勇. 人工降雨条件下冲沟型泥石流起动试验研究.
工程地质学报,2015,23(1):111-118
|
被引
9
次
|
|
|
|
|
13.
王腾飞. 暴雨条件下麻柳沟坡面泥石流形成过程试验研究.
水文地质工程地质,2014,41(4):119-124
|
被引
5
次
|
|
|
|
|
14.
唐红梅. 坡面泥石流演化模式及其试验.
山地学报,2014,32(1):98-104
|
被引
5
次
|
|
|
|
|
15.
Caine N. The rainfall intensity-duration control of shallow landslide and debris flows.
Geografiska Annaler,1980,62(1):23-27
|
被引
106
次
|
|
|
|
|
了解气象卫星更多信息，请访问