| 滑坡动态力学监测及破坏过程案例分析 |
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| 引用本文： | 陶志刚,罗森林,朱淳,何满潮.滑坡动态力学监测及破坏过程案例分析[J].工程地质学报(英文版),2022,30(1):177-186. |
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| 作者姓名： | 陶志刚 罗森林 朱淳 何满潮 |
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| 作者单位： | ①.深部岩土力学与地下工程国家重点实验室，北京 100083，中国 |
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| 基金项目： | 中央高校基本科研业务费;国家自然科学基金;越崎学者专项 |
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| 摘 要： | 边坡临滑预警一直是地灾研究的难点与热点问题。本文采用一种力学监测方法(牛顿力监测)对雅安宝兴县某傍山公路边坡进行监测，该边坡位于唐包滑坡老滑坡体下缘边界处。经过4个月的连续监测，获取了大量监测数据，并成功预报了两次局部滑坡。本文首先整合牛顿力监测数据和降雨量监测数据，再将监测曲线与滑坡演化过程进行对比分析，揭示滑坡过程中的力学演化规律，对降雨条件下诱发滑坡的原因进行了分析。然后对牛顿力监测预警成功的案例其临滑预警时长与滑坡体量间的关系进行拟合，发现存在明显的正相关关系。最后讨论了牛顿力监测方法与斋藤模型之间的关联性以及优劣势，并根据各自的特点提出了由面到点的监测预警思路。通过分析，牛顿力监测曲线与滑坡演化过程能较好对应，并可将土质滑坡分为3阶段:(1)牛顿力上升阶段; (2)牛顿力突降阶段; (3)滑坡阶段。本文为牛顿力监测系统的推广提供了实践经验，并为力学监测与位移监测结合的研究提供一个新的思路。
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| 关 键 词： | 滑坡 牛顿力监测 临滑预警 斋藤模型 工程案例 |
| 收稿时间： | 2021-01-20 |
DYNAMIC MECHANICAL MONITORING OF LANDSLIDE AND CASE ANALYSIS OF FAILURE PROCESS |
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| TAO Zhigang,LUO Senlin,ZHU Chun,HE Manchao.DYNAMIC MECHANICAL MONITORING OF LANDSLIDE AND CASE ANALYSIS OF FAILURE PROCESS[J].Journal of Engineering Geology,2022,30(1):177-186. |
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| Authors: | TAO Zhigang LUO Senlin ZHU Chun HE Manchao |
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| Affiliation: | ①.State Key Laboratory for Geomechanics and Deep Underground Engineering, Beijing 100083, China②.School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, China③.Key Laboratory of Geotechnical and Underground Engineering(Tongji University), Ministry of Education, Shanghai 200092, China④.School of Earth Sciences and Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | It is always a difficult and hot issue to study the critical-sliding warning. In this paper, we use the mechanical monitoring method(Newton force monitoring) to monitor the slope of a mountain side highway in Baoxing County, Ya’an. The slope is located at the lower edge of the old landslide of Tangbao landslide. After 4 months of continuous monitoring, we obtain a large number of monitoring data, and two local landslides are successfully predicted during the monitoring period. We first integrate the Newton force monitoring data and rainfall monitoring data, and then compare the monitoring curve with the landslide evolution process, reveal the mechanical evolution law in the process of landslide, and analyze the causes of landslide induced by rainfall. Then, we fit the relationship between the critical-sliding warning time and the landslide volume of the successful cases, and find that there is an obvious positive correlation. Finally, we discuss the relationship between Newton force monitoring method and Saito model, and put forward the idea of monitoring and critical-sliding warning from surface to point. According to the analysis, the Newton force monitoring curve can well correspond with the landslide evolution process. The soil landslide can be divided into three stages: a)the rising stage of Newton force;b) the drop stage of Newton force;c) landslide stage. This paper provides practical experience for the popularization of Newton force monitoring system, and provides a new idea for the research of the combination of mechanical monitoring and displacement monitoring. |
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| Keywords: | Landslide Newton force monitoring Critical-sliding warning of landslide Saito model Engineering case |
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