Time evolution and spatial accumulation of progressive failure for Xinhua slope in the Dagangshan reservoir, Southwest China
Time evolution and spatial accumulation of progressive failure for Xinhua slope in the Dagangshan reservoir, Southwest China
复制标题
大岗山水库新华斜坡渐进破坏的时间演化与空间累积
DOI：
10.1007/s10346-018-0946-8
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发表时间：
2018-01
期刊：
影响因子：
6.7
通讯作者：
Jia-wen Zhou
中科院分区：
文献类型：
--
作者：
Ming-liang Chen;Peng-fei Lv;Shi-lin Zhang;Xing-ze Chen;Jia-wen Zhou
本文对新华斜坡古滑坡堆积体渐进性破坏的时间演化和空间积累进行了初步研究。根据蓄水后的地质响应，新华边坡出现了后缘地裂缝、脚趾坍塌、强降雨局部浅层滑坡、渐进式蠕变位移等变形的空间积累。在全球导航卫星系统(GNSS)、无人机(UAV)和实地调查的协助下，对新华斜坡进行了大约2年的监测。水库滑坡的变形过程被认为是各种不利因素地质影响的综合复杂组合。现场调查和监测表明，大坝建成后的主要严重影响来自初期的大规模蓄水、水位的波动和汛期的存在。边坡堆积体的蠕滑变形是与坡体内部强降雨、强水流、瞬变渗流等不利水力条件综合作用的结果，也是水位波动激活的结果，这从汛期的两次明显变形可以得到验证。对于具有日调节能力的水库，7月份出现明显变形，凸显汛期水位调节方案对控制边坡淤积变形的重要性，运行期水位波动不超过10米。
This paper presents a preliminary study of time evolution and spatial accumulation of progressive failure for ancient landslide deposits in Xinhua slope. According to the geological response after impoundment, the Xinhua slope has shown the spatial accumulation of deformation, such as ground cracks in the rear edge, toe collapse, local shallow slides in intense rainfall, and progressive creep displacement. Approximately 2 years of monitoring was performed for the Xinhua slope with the assistance of the global navigation satellite system (GNSS), unmanned aerial vehicles (UAVs), and field investigations. The deformation process of a reservoir landslide is considered to be a comprehensive and complicated combination of geological influence from various adverse factors. Field investigations and monitoring indicate that the major serious influence after completion of dam construction comes from the initial large-scale impoundment, the fluctuation of water level, and the existence of a flood season. The creep/slip deformation of slope deposits is a result of integration with adverse hydraulic conditions, e.g., strong rainfall, intense currents and transient seepage flow inside the slope deposits, and activation by water level fluctuation, which can be verified from the twofold evident deformation in the flood season. For the reservoir with daily regulation ability, the occurrence of evident deformations in July highlights that the regulation plan for water level in the flood season is important for controlling the deformation of slope deposits, where the fluctuation of the water level is no more than 10 m in the operation period.
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影响因子：
6.7
作者：
A. Chelli;G. Mandrone;G. Truffelli
通讯作者：
A. Chelli;G. Mandrone;G. Truffelli
影响因子：
6.7
作者：
D. M. Duc
通讯作者：
D. M. Duc
DOI：
10.1007/978-3-642-32238-9_42
发表时间：
2013
期刊：
--
影响因子：
--
作者：
Masao Yamada;Kensuke Ichikawa;Takeshi Kuwano;Tomonari Takeuchi;Atsushi Nakagawa
通讯作者：
Masao Yamada;Kensuke Ichikawa;Takeshi Kuwano;Tomonari Takeuchi;Atsushi Nakagawa
DOI：
--
发表时间：
2011
期刊：
Journal of Sichuan University
影响因子：
--
作者：
Huang Run-qiu
通讯作者：
Huang Run-qiu
DOI：
10.1659/mrd.mm068
发表时间：
2010-05
期刊：
--
影响因子：
--
作者：
D. Petley
通讯作者：
D. Petley