贡嘎山区一次特大泥石流
文献类型：期刊论文
| 作者 | 吕儒仁 |
| 刊名 | 冰川冻土
 |
| 出版日期 | 1992 |
| 卷号 | 14期号:2页码:174-177 |
| 关键词 | 贡嘎山 燕子沟 冰雪消融和雨水混合型泥石流 |
| ISSN号 | 1000-0240 |
| 其他题名 | An Extreme Heavy Debris Flow in Mt. Gongga |
| 通讯作者 | 吕儒仁 |
| 中文摘要 | 1989年7月26日贡嘎山东坡燕子沟内暴发一次特大型冰雪消融水和雨水混合型泥石流,流经30多公里后以9.41m/s流速,6 775.2 m3/s流量冲入并堵塞了大渡河,直接经济损失达245万元。这场泥石流总径流量达1 716.4×104 m3,总输沙量627.0×103 m3,弯道爬高15.5—16.5 m。中国西部高山区今后还会出现这类现象和灾害,这是必须深入研究的重大课题。 |
| 英文摘要 | A catastrophic debris flow of meitwater-rain type occurred in the Nanguan gully on the left bank of the middle reaches in ihe Yunzi Valley of the east slope in Mt. Gongga at 15-18 h, on 26 July, 1989. It destroyed a large highway bridge , blocked up the Dadu River and forced main flow line of the Dadu River towards the left bank. The Luding-Shimian Highway was washed out a length of 820 m, and the road had been closed for 9 months. The economy loss of 2.45 millions Yuan was estimated.The Nanguan gully, located at 101 ° 54 ’ 37.1 " -101 ° 59 ’ 11.3 " E, 29° 41 ’ 23.9 " -29 ° 44 ’ 39.5 " N, has an area of 19.8 km2 large with a glacier area of 0.84 km2. The elevation range is 3 988 m, average longitudinal gradient of main gully bed is 215.7‰.A length of flow way of the debris flow is above 30 km, it appears in gustiness lasting 3 hours. The fluid appears in viscousness. The maximum weight of the unit volume is from 2.0 to 2.4 t/m3. The velosity changes from 8.2 to 11.7 m/s. The peak flood changes from 2336.0 to 6775.2 m3/s. The total runoff into the Dadu River is about 1 716.4 × 104 m3, with the mud, sand and stone of 627.0 × 104 m3. The height creeping up of debris flow on the bend way is 15.5 to 16.5 m. A total of remaining sediments in the gully bed is 310.4 × 104 m3. The debris flow body filled all the gully bed on its flow way, made sedimentation of overflowing, decelerating and back flowing. |
| 学科主题 | 灾害学 |
| 收录类别 | CSCD ; 北大中文核心 |
| 语种 | 中文 |
| CSCD记录号 | CSCD:169794 |
| 公开日期 | 2011-08-26 |
| 源URL | [http://192.168.143.20:8080/handle/131551/3418]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） |
| 作者单位 | 中国科学院、水利部成都山地灾害与环境研究所 |
| 推荐引用方式 GB/T 7714 | 吕儒仁. 贡嘎山区一次特大泥石流[J]. 冰川冻土,1992,14(2):174-177. |
| APA | 吕儒仁.(1992).贡嘎山区一次特大泥石流.冰川冻土,14(2),174-177. |
| MLA | 吕儒仁."贡嘎山区一次特大泥石流".冰川冻土 14.2(1992):174-177. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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