[1]杨东旭,陈晓清,游勇,等.汶川地震区绵竹小岗剑沟泥石流发展趋势[J].山地学报,2012,(06):701.
　YANG Dongxu,CHEN Xiaoqing,YOU Yong,et al.The Debris Flow Development Trend of in Xiaogangjian Gully in Mianzhu County，Wenchuan Earthquake Zone[J].Mountain Research,2012,(06):701.
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汶川地震区绵竹小岗剑沟泥石流发展趋势()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2012年06期
页码:
701
栏目:
山地学报
出版日期:
2012-01-01

文章信息/Info

Title:
The Debris Flow Development Trend of in Xiaogangjian Gully in Mianzhu County，Wenchuan Earthquake Zone
作者:
杨东旭;陈晓清;游勇;柳金峰;陈兴长;赵万玉;
1.中国科学院水利部成都山地灾害与环境研究所/中国科学院山地灾害与地表过程重点实验室，四川 成都610041；
2.中国科学院大学，北京100049；
3.西南科技大学资源与环境工程学院，四川 绵阳621010
Author(s):
YANG Dongxu; CHEN Xiaoqing; YOU Yong; LIU Jinfeng; CHEN Xingchang; ZHAO Wanyu
1 Key Laboratory of Mountain Hazards and Earth Surface Processes，Institute of Mountain Hazards and Environment，CAS，Chengdu 610041，China；
2. University of Chinese Academy of Sciences，Beijing 100049,China；
3. School of Environment and Resource ，Southwest University of Science and Technology，Mianyang 621010,China
关键词:
汶川地震; 小岗剑沟; 泥石流; 发展趋势
Keywords:
Wenchuan earthquake; debris flow; Xiaogangjian; development trend
分类号:
P642. 23
文献标志码:
A
摘要:
小岗剑沟是汶川地震区内一条典型的泥石流沟,位于绵远河的左测,流域面积1.36 km2,沟床平均纵比降412‰。该沟在2008年"5.12"汶川地震后多次暴发泥石流,掩埋从沟口通过的汉(旺)清(平)公路,给四川省绵竹市清平乡的地震灾后重建造成重大危害。通过初步分析,小岗剑沟泥石流的形成过程为:暴雨作用下沟因上游良好的汇流条件而产生山洪→山洪冲刷堆积在沟道内的松散固体物质形成小规模泥石流→泥石流沿大比降沟道向下运动,因具有强大动能而具有强大冲刷下切侵蚀能力,下切侵蚀下游沟床质以及沟口的老台地→在沟口形成大规模泥石流。地震后4 a内共暴发泥石流10次,将沟口老堆积体下切侵蚀深度达35 m,泥石流冲出...
Abstract:
The Xiaogangjian Gully is typical for debris flow in the earthquake zone. Located in the left of Mianyuan river，it has a drainage area of 1.36 km2 and an average longitudinal slope of 412‰. After Wenchuan earthquake，many debris flow occurred in this gully，causing great disasters to the reconstruction of Qingping town，The debris flow formation process is as follows: torrents→ torrent scourage → smallscale debris flow → debris flow in mainstream channel，with powerful energy and strong capacity of scouring →，incision of streambed sediment and old deposit platform → largescale debris flow. at the outlet There were 10 debris flows in the following 4 years after the earthquake，which cut the gully up to the depth of 35 m，and brought 50 × 104 m3 of solid mass out of the gully. Debris flows buried the Hanwang-Qingping road，blocked the river and formed a dam lake，carried a huge volume of sediment to the downstream，uplifting the water level and silting the highway. At present，the gully still has 3343×104 m3 of solid material，of which about 156.8×104 m is prone to debris flow in the future when it encounters great rainstorms. The development trends of the debris flow in Xiaogangjian gully are as follows: 1) its strength of activity will keep reducing with the decrease of loose granular materials and total amounts of debris flow；2) the debrisflow's activity is transportlimited system right after the earthquake，followed by the transitional type between transportlimited system and weatheringlimited system and ultimately is weatheringlimited system.

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备注/Memo

备注/Memo:
收稿日期(Received date)：2012-07-24；改回日期(Accepted) : 2012-09-08。
基金项目（Foundation item）：国家科技支撑计划(2011BAK12B03) 和国家重点基础研究发展计划“973”计划(2011CB409903)资助。\[This research is supported by National Key Technology R&D Program (2011BAK12B03) and National Basic Research Program “973 ”Program ( 2011CB409903).\]
作者简介（Biography）：杨东旭(1985-), 男, 河南南阳人, 硕士研究生, 主要从事泥石流防治。\[Yang Dongxu, male, born in 1985, Nanyang of Henan province, master, mainly engaged in debris f low prevention and mitigation.\] *
通讯作者(Corresponding author)：陈晓清(1974-), 男, 四川遂宁人, 研究员, 研究方向为泥石流滑坡减灾理论与技术。\[Chen Xiaoqing, male, born in 1974, Suining of Sichuan province, doctor, professor, mainly engaged in mountain hazards prevention and mitigation.\] E-mail:xqchen@imde.ac.cn
更新日期/Last Update: 1900-01-01