| 泰宁县芦蓭坑沟5. 8特大泥石流成因和特性分析 | |
张勇1,2 ; 陈宁生1; 王涛1; 邓明枫1
| |
| 2019 | |
| Source Publication | 泥沙研究
 |
| ISSN | 0468-155X |
| Volume | 44Issue:4Pages:54-59 |
| Subtype | Article |
| Contribution Rank | 1 |
| Abstract | 通过对2016年5月8日泰宁芦蓭坑沟泥石流灾害的现场调查,分析了芦蓭坑沟泥石流形成的物源、地形和水源条件,采用现场调查与模型计算相结合的方法分析了泥石流灾害的特征与形成演化过程。分析结果表明:本次泥石流为低频黏性暴雨型沟谷泥石流,沟口处泥石流流速达到11. 7 m/s,泥石流流量达到721. 7 m~3 /s;极端雷暴雨是本次泥石流的激发因素,沟道复杂的地形地貌特征和丰富的松散坡积物为泥石流提供了演化条件;沟道内多处卡口和大石块堵塞放大了本次泥石流的规模和速度,沿途固体物质补给使泥石流容重逐步增大。通过分析芦蓭坑沟泥石流形成与演化特征,为类似低频泥石流灾害形成与演化提供一定的理论与技术支撑。 |
| Other Abstract | Debris flow formation conditions of source,terrain and water were analyzed according to field investigation at Luankeng gully. The characteristics and evolution process of debris flow are studied by field investigation and model calculation. Results show that this is a low frequency and viscous type debris flow. The largest velocity reached to 11. 7 m/s and the discharge of debris flow was as large as 721. 7 m~3 /s at the gully mouth. Combination of high frequency thunder and heavy precipitation were the motivating factor of this debris flow. The complicated topographic of the channel and abundant loose slope deposits provide the evolutionary condition for the debris flow. Scale and speed of the debris flow were magnified by disturbed cross sections and large stones. Solid material supply along the route made the density of debris flow increase gradually. This study provides an example of formation and evolution of this kind of debris flow. |
| Keyword | 泰宁芦蓭坑沟 成灾特征 运动参数 演化过程 |
| DOI | 10.16373/j.cnki.ahr.180058 |
| Indexed By | CSCD |
| Language | 中文 |
| CSCD ID | CSCD:6543909 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imde.ac.cn/handle/131551/27136 |
| Collection | 山地灾害与地表过程重点实验室 |
| Corresponding Author | 陈宁生 |
| Affiliation | 1.中国科学院-水利部成都山地灾害与环境研究所山地灾害与地表过程重点实验室; 2.中国科学院大学 |
| First Author Affilication | 中国科学院水利部成都山地灾害与环境研究所 |
| Corresponding Author Affilication | 中国科学院水利部成都山地灾害与环境研究所 |
| Recommended Citation GB/T 7714 | 张勇,陈宁生,王涛,等. 泰宁县芦蓭坑沟5. 8特大泥石流成因和特性分析[J]. 泥沙研究,2019,44(4):54-59. |
| APA | 张勇,陈宁生,王涛,&邓明枫.(2019).泰宁县芦蓭坑沟5. 8特大泥石流成因和特性分析.泥沙研究,44(4),54-59. |
| MLA | 张勇,et al."泰宁县芦蓭坑沟5. 8特大泥石流成因和特性分析".泥沙研究 44.4(2019):54-59. |
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| 泰宁县芦蓭坑沟_5.8_特大泥石流成因和（353KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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