[1]XIONG Jiang,TANG Chuan,GONG Lingfeng,et al.Evolution Indexes Selecting and Laws analyzing of Debris Flow Source in Strong Earthquake Area[J].Research of Soil and Water Conservation,2020,27(01):360-365.
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Evolution Indexes Selecting and Laws analyzing of Debris Flow Source in Strong Earthquake Area
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 01
Page number:
360-365
Column:
Public date:
2020-02-20
- Title:
- Evolution Indexes Selecting and Laws analyzing of Debris Flow Source in Strong Earthquake Area
- Keywords:
- debris flow; source evolution; quantitative index; laws
- CLC:
- P642.23
- DOI:
- -
- Abstract:
- In order to explore the evolution laws of debris flow source in strong earthquake area, the quantity, area, density, connectivity, length and shape coefficient of source are selected as quantitative indexes. The basic data were obtained through the interpretations and statistics of multi-phase images. The following conclusions are obtained through the analysis. The source area of the four phase images interpretation are 7.86 km2, 6.67 km2, 4.67 km2, and 3.25 km2, respectively, with the decreases of 15%, 30%, and 30%, respectively. The numbers of sources are 1 310, 1 582, 1 203 and 1 004, with the increases of 21%, -24% and -17%, respectively. After the earthquake, the numbers, connectivity and length of the source evolved in the form of increase firstly, and then decrease, which reached the maximum around 2011, but the area showed a decreasing trend. The evolution stage of source can be divided into four stages: infancy, youth, adulthood and old age by combining the previous research results and the evolution trend of indicators. After the earthquake, the evolution type of source on the slope will gradually change from the form of clastic flow and hill-slop flow to channel erosion, and the source erosion type is transformed from the early-stage revetment erosion and materials collapse supply on both sides of the channel to the deepened erosion by hydraulic downcutting in the later stage. These research results have positive significance for enriching the theory of debris flow source evolution in earthquake area.
- References:
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[1] 许冲,戴福初,姚鑫.汶川地震诱发滑坡灾害的数量与面积[J].科技导报,2009,27(11):79-81.
[2] 黄润秋,李为乐.汶川大地震触发地质灾害的断层效应分析[J].工程地质学报,2009,17(1):19-28.
[3] 黄润秋.汶川地震地质灾害后效应分析[J].工程地质学报,2011,19(2):145-151.
[4] 唐川.汶川地震区暴雨滑坡泥石流活动趋势预测[J].山地学报,2010,28(3):341-349.
[5] Tang C, Zhu J, Li W L, et al. Rainfall-triggered debris flows following the Wenchuan earthquake[J]. Bulletin of Engineering Geology and the Environment, 2009,68(2):187-194.
[6] 唐川,李为乐,丁军,等.汶川震区映秀镇“8·14”特大泥石流灾害调查[J].地球科学(中国地质大学学报),2011,36(1):172-180.
[7] 蒋志林,朱静,常鸣,等.汶川地震区红椿沟泥石流形成物源量动态演化特征[J].山地学报,2014,32(1):81-88.
[8] 姚维益,常鸣,李为乐.都江堰龙溪河流域典型泥石流物源演化特征遥感监测[J].水土保持研究,2018,25(3):205-209.
[9] 常鸣,唐川,夏添,等.强震区泥石流堆积物的演化特征与方量估算模型[J].水利学报,2012,43(S2):117-121.
[10] Chen H X, Zhang L M, Zhang S. Evolution of debris flow properties and physical interactions in debris-flow mixtures in the Wenchuan earthquake zone[J]. Engineering Geology, 2014,182:136-147.
[11] 柳金峰,游勇,范建容,等.汶川地震触发潜在性泥石流研究:以岷江上游关山沟为例[J].四川大学学报:工程科学版,2009,41(S1):70-75.
[12] 唐川,齐信,丁军,等.汶川地震高烈度区暴雨滑坡活动的遥感动态分析[J].地球科学(中国地质大学学报),2010,35(2):317-323.
[13] 张国宾,韩如雪,张健秀.高分辨率遥感影像解译方法探讨[J].科技创新导报,2018,15(13):77-78.
[14] 吕慧华,周峰,李娜,等.苏北里下河典型区河网水系演变特征研究[J].长江流域资源与环境,2018,27(2):380-385.
[15] 车小力.黄土高塬沟壑区董志塬沟头溯源侵蚀分布特征及其演化[D].陕西杨凌:西北农林科技大学,2012.
[16] 蒋志林.基于RS的震区泥石流物源演化特征分析[D].成都:成都理工大学,2014.
[17] Tang C, Zhu J, Qi X, et al. Landslides induced by the Wenchuan earthquake and the subsequent strong rainfall event:A case study in the Beichuan area of China[J]. Engineering Geology, 2011,122(1/2):22-33.
[18] 龚凌枫,唐川,李宁,等.急陡沟道物源起动模式及水土耦合破坏机制分析[J].地球科学进展,2018,33(8):842-851.
[19] 顾文韬.汶川地震极震区泥石流物源特征及启动机理研究[D].成都:成都理工大学,2015.
[20] Zhang S, Zhang L M, Chen H X, et al. Changes in runout distances of debris flows over time in the Wenchuan earthquake zone[J]. Journal of Mountain Science, 2013,10(2):281-292.
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Last Update:
2020-02-25