| 雅砻江中游楞古水电站夏日滑坡发育特征及稳定性分析 |
| |
| 引用本文： | 裴小龙,杨瀚文,宋东阳,杨斌,田野.雅砻江中游楞古水电站夏日滑坡发育特征及稳定性分析[J].中国地质灾害与防治学报,2022,33(1):75-82. |
| |
| 作者姓名： | 裴小龙 杨瀚文 宋东阳 杨斌 田野 |
| |
| 作者单位： | 1.中国地质调查局廊坊自然资源综合调查中心, 河北 廊坊 065000 |
| |
| 基金项目： | 青藏高原自然资源要素综合观测试点(DD20208064);重点地区地下水流场调查(西安矿产中心)(DD20211563)。 |
| |
| 摘 要： | 位于雅砻江中游的楞古水电站工程地质条件十分复杂，大型-巨型滑坡发育。以雅砻江楞古水电站夏日滑坡为例，在现场详细调查的基础上，采用试验测试和数值模拟等方法，研究了蓄水后滑坡的稳定性发展趋势。根据地貌形态、物质组成、钻孔资料以及现场调查，将夏日滑坡划分为三个区，其中Ⅱ区目前已经出现一定的变形破坏，稳定性最差。数值模拟表明，蓄水前，夏日滑坡整体稳定性较好，只在前缘局部出现变形；蓄水后，滑坡变形明显扩大，前缘沿先存的次级滑带滑动。提出在夏日滑坡前缘进行格构锚和抗滑桩支护，并利用InSAR技术对滑坡灾害隐患进行早期识别和监测预警。该研究为楞古水电站库岸滑坡防治提供了重要依据，并对同类型滑坡研究具有一定的参考意义。
|
| 关 键 词： | 夏日滑坡 发育特征 稳定性分析 高山峡谷区 楞古水电站 |
| 收稿时间： | 2021-02-19 |
Characteristics and stability analysis of Xiari landslide at Lenggu hydropower station in the middle reach of the Yalong river |
| |
| PEI Xiaolong,YANG Hanwen,SONG Dongyang,YANG Bin,TIAN Ye.Characteristics and stability analysis of Xiari landslide at Lenggu hydropower station in the middle reach of the Yalong river[J].The Chinese Journal of Geological Hazard and Control,2022,33(1):75-82. |
| |
| Authors: | PEI Xiaolong YANG Hanwen SONG Dongyang YANG Bin TIAN Ye |
| |
| Institution: | 1.Langfang Comprehensive Survey Center of Natural Resources, China Geological Survey, Langfang, Hebei 065000，China2.Integrated Command Center for Natural Resources Survey, China Geological Survey, Beijing 100032，China3.Xi'an Center of Mineral Resources Survey, China Geological Survey, Xi'an, Shaanxi 710100，China4.Center for Applied Geological Survey, China Geological Survey, Chengdu, Sichuan 610000，China |
| |
| Abstract: | The engineering geological conditions of Lenggu hydropower station located in the middle reaches of Yalong River are very complex, and large-scale landslides are very developed. Taking Xiari landslide of Lenggu hydropower station on Yalong River as an example, the stability development trend of landslide after impoundment is studied by means of test and numerical simulation on the basis of detailed field investigation on the spot. According to the geomorphic morphology, material composition, drilling data and field investigation, the Xiari landslide is divided into three zones, among which the zone II has been deformed and damaged to some extent, and the stability is the worst. The numerical simulation shows that the overall stability of the landslide is fairly good before the impoundment, and the deformation only occurs at the front edge. After the impoundment, the deformation of the landslide is obviously enlarged and the front edge slides along the existing secondary slip zone. It is suggested that lattice anchor and anti-slide pile should be used at the front edge of the Xiari landslide, and the InSAR technology should also be used for early identification, monitoring and early warning of landslide hazards. This study provides an important basis for the prevention and control of reservoir bank landslide in Lenggu Hydropower Station, and has a certain reference significance for the study of the same type of landslide. This study provides an important basis for the prevention and control of reservoir bank landslide in Lenggu Hydropower Station, and has a certain reference significance for the study of the same type of landslide. |
| |
| Keywords: | Xiari landslide development characteristics stability analysis mountain and steepy gorge area Lenggu hydropower station |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国地质灾害与防治学报》浏览原始摘要信息 |
| 点击此处可从《中国地质灾害与防治学报》下载免费的PDF全文 |
|
