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| 1 | 高分三号卫星在洪涝和滑坡灾害应急监测中的应用显示文摘在介绍合成孔径雷达(SAR)在洪涝和滑坡灾害监测中应用方法的基础上,采用高分三号(GF-3)卫星SAR数据对2017年吉林永吉'7·13'特大洪水灾害和四川茂县的'6·24'特大山体滑坡灾害开展应急监测。监测结果显示:洪水淹没区主要集中在吉林市境内的温德河和鳌龙河附近,永吉县境内和吉林市市辖区淹没面积(均不包含城市淹没区)分别为19.82km2和8.70km2;滑坡体长度为2620m,最大滑坡宽度为1135m,滑坡体面积为1.76km2,与无人机航拍影像的监测结果基本一致。应用结果表明,GF-3卫星具有较好的灾害应急监测能力,能够为中国的防灾减灾领域提供有力的数据支撑和信息服务。 | 马建威 孙亚勇 陈德清 黄诗峰 李小涛 崔倩 雍熙 | 2017 | 航天器工程2017，26，6： | 29 |
| 2 | Characteristics and triggering mechanism of Xinmo landslide on 24 June 2017 in Sichuan, China显示文摘At 5: 39 AM on 24 June 2017, a huge landslide-debris avalanche occurred on Fugui Mountain at Xinmo village, Diexi town, Maoxian county, Sichuan province, China. The debris blocked the Songpinggou River for about 2 km, resulting in a heavy loss of both human lives and properties(10 deaths, 3 injuries, 73 missing, and 103 houses completely destroyed). The objectives of this paper are to understand the overall process and triggering factors of this landslide and to explore the affecting factors for its long term evolution before failure. Post event surveys were carried out the day after the landslide occurrence. Information was gathered from literature and on-site investigation and measurement. Topography, landforms, lithology, geological setting, earthquake history, meteorological and hydrological data of the area were analysed. Aerial photographs and other remote sensing information were used for evaluation and discussion. Eye witnesses also provided a lot of helpful information for us to understand the process of initiation, development and deposition. The depositional characteristics of the moving material as well as the traces of the movement,the structural features of the main scarp and the seismic waves induced by the slide are presented and discussed in detail in this paper. The results show that the mechanism of the landslide is a sudden rupture of the main block caused by the instability of a secondary block at a higher position. After the initiation, the failed rock mass at higher position overloaded the main block at the lower elevation and collapsed in tandem. Fragmentation of the rock mass occurred later, thus forming a debris avalanche with high mobility. This landslide case indicates that such seismic events could influence geological hazards for over 80 years and this study provides reference to the long term susceptibility and risk assessment of secondary geological hazards from earthquake. | SU Li-jun HU Kai-heng ZHANG Wei-feng WANG Jiao LEI Yu ZHANG Chong-lei CUI Peng Alessandro PASUTO ZHENG Quan-hong | 2017 | Journal of Mountain Science2017，14，9： | 20 |
| 3 | Numerical modeling and dynamic analysis of the 2017 Xinmo landslide in Maoxian County, China显示文摘A catastrophic landslide occurred at Xinmo village in Maoxian County, Sichuan Province,China, on June 24, 2017. A 2.87×106 m3 rock mass collapsed and entrained the surface soil layer along the landslide path. Eighty-three people were killed or went missing and more than 103 houses were destroyed. In this paper, the geological conditions of the landslide are analyzed via field investigation and high-resolution imagery. The dynamic process and runout characteristics of the landslide are numerically analyzed using a depth-integrated continuum method and Mac Cormack-TVD finite difference algorithm.Computational results show that the evaluated area of the danger zone matchs well with the results of field investigation. It is worth noting that soil sprayed by the high-speed blast needs to be taken into account for such kind of large high-locality landslide. The maximum velocity is about 55 m/s, which is consistent with most cases. In addition, the potential danger zone of an unstable block is evaluated. The potential risk area evaluated by the efficient depthintegrated continuum method could play a significant role in disaster prevention and secondary hazard avoidance during rescue operations. | OUYANG Chao-jun ZHAO Wei HE Si-ming WANG Dong-po ZHOU Shu AN Hui-cong WANG Zhong-wen CHENG Duo-xiang | 2017 | Journal of Mountain Science2017，14，9： | 19 |
| 4 | Slope structures and formation of rock–soil aggregate landslides in deeply incised valleys显示文摘Rock–soil aggregate landslides(RSALs) are a common geological hazard in deeply incised valleys in southwestern China. Large-scale RSALs are widely distributed in the upper reaches of the Dadu River, Danba County, Sichuan Province, and are influenced by slope structure, which can be divided into open, lock, strip, and dumbbell types, as well as soil type and meso-structure, which can be classified as layered rock–soil aggregate, block-soil, and grainsoil. In this study, the evolution of four types of structures, such as layered-dumbbell, block-soil lock, banded block-soil, and block-soil open types, were analyzed by field surveys, surface and deep displacement monitoring, and Flac3 D. It was found that the Danba reach of the Dadu River showed incised valley through the evolution from wide to slow valley affected by internal and external geological processes since the Quaternary Glaciation. In the layered-dumbbell rock–soil aggregate, the main sliding pattern is multi-stage sliding at different depths. Circular sliding in the trailing edge and plane sliding along the bedrock in the front edge body occurin the block-soil-lock type aggregate. Large-scale multi-level and circular sliding over long distances occur in the banded block-soil aggregate. The blocksoil open type is stable, with only circular sliding occurring in local and shallow surfaces of the body. The monitoring and numerical simulation results further show that slope structure and regularity have diversified with RSALs. The results provide a basis for analyzing the stability mechanism of RSALs and preventing RSALs in deeply incised valleys. | BAI Yong-jian WANG Yun-sheng GE Hua TIE Yong-bo | 2020 | Journal of Mountain Science2020，17，2： | 4 |
| 5 | 基于物质点法的新磨村滑坡动力特性分析显示文摘2017年6月24日,四川省茂县叠溪镇新磨村突发特大滑坡碎屑流灾害,造成大量人员伤亡及房屋损坏,针对该滑坡特征及成因机制,相关学者已经取得一定研究成果,然对其动力学过程与特征的认知还相对缺乏。为解决这一问题,本文引入兼具欧拉算法和拉格朗日算法优势,适用于大变形及长距运动模拟计算的物质点法进行模拟分析。通过分析滑坡全程位移时程曲线、速度时程曲线和等效塑性应变变化特征,揭示其动力演化过程。现场调查与模拟结果表明,崩滑体启动后呈整体运移,与下方坡体碰撞解体,转化为碎屑流,不同时刻同一位置的坡体形态、质点等效塑性应变发展趋势以及能量时程变化曲线均进一步反映碎屑流碰撞破碎和刮铲侵蚀的过程。数值模拟计算与Scheidegger提出的理论计算方法获得的碎屑流速度特征吻合,可以在一定程度上反映滑坡的致灾能力。模拟结果综合反映了滑坡启动及动力演化过程。 | 谢艳芳 李新坡 赵曙熙 刘洋 徐骏 | 2018 | 山地学报2018，36，4： | 4 |
| 6 | 四川省应急测绘保障体系构建及实践显示文摘针对应急测绘体系研究缺乏系统性总结和梳理问题,以及大数据时代新技术对应急测绘发展带来的巨大挑战。通过相关文献资料的研究,以四川省为例阐述了应急测绘的内涵及特点,系统总结了面向不同灾种的应急测绘保障内容及工作流程,梳理了应急测绘发展现状和趋势,重点介绍了四川省空天地一体化应急测绘保障体系构建及实践。结果表明,国内外应急测绘的组织机制、基础设施和装备、关键技术及信息平台等方面研究已较为成熟,面对未来防灾减灾的严峻形势,还需加强理论方法和应急机制研究、国产化先进装备研发、灾害数据实时获取和处理等关键技术研究以及面向不同灾种的应用示范。 | 曾超 曹振宇 曾珍 周兴霞 | 2021 | 测绘科学2021，46，11： | 2 |
| 7 | On the initiation,movement and deposition of a large landslide in Maoxian County,China显示文摘At 5 am 24 th June 2017, a catastrophic landslide hit Xinmo Village, Maoxian County, Sichuan Province, China. The slide mass rushed down from an altitude of 3400 m and traveled 2700 m in a high velocity. The 13 million m^3 deposition buried the whole village and caused about 100 deaths. The source area of the landslide is located in a high steep slope, average slope angle is 40o and maximal angle is 65o. The strata are interbedded Triassic Zagunao Formation metamorphic sandstone and slate with the dip slope angle of 45°. Based on high-resolution satellite remote sensing image, UAV image, DEM data, and field investigation, failure mechanism, travel features, and deposit characteristics were analyzed. The results showed that this landslide was influenced by Songpinggou Fault zone. According to the topography before the failure, the landslide is located in the back scarp of an antecedent landslide induced by Diexi Earthquake in 1933. The bedding slope provided potential rupture surface. Historical seismic activities and long-term gravitational deformation caused rock mass accumulated damages. Weathering and precipitation weakened the rock mass and finally induced shearing and tension failure. A huge block detached from the top rock slope, pushed the past landslide deposits in the middle part, rushed out of the slope bottom in a high velocity and buried the Xinmo Village. The rapid movement entrained and brought the soil into the Songping Gully which recoiled with and bounced back from the opposite mountain. | pei xiang-jun guo bin cui sheng-hua wang dong-po xu qiang li tian-tao | 2018 | Journal of Mountain Science2018，15，6： | 2 |
| 8 | 西藏易贡高位远程滑坡研究进展与展望显示文摘高位远程滑坡指剪出口高、滑动距离长、体积大和速度快的滑坡,具有强动能、强烈碎屑化-流体化、铲刮效应等特征,滑坡及其诱发的灾害链对人类生命财产安全、路桥基础设施、水利水电工程等危害巨大。在遥感解译和野外调查的基础上,总结了2000年西藏易贡高位远程滑坡的研究进展,分析了滑坡启滑机制、体积、运动速度、堰塞湖体积、溃坝机制等,进一步揭示了内外动力耦合作用是西藏易贡高位远程滑坡的主要影响因素,以及该滑坡具有溯源侵蚀复发型的周期性启滑机制。基于GIS与高精度DEM进一步核算了易贡高位远程滑坡的体积,认为滑源区崩滑体体积约9225×10^(4)m^(3),滑坡堆积体体积约为2.81×10^(8)~3.06×10^(8)m^(3),其中堆积体体积与国内外研究的认识基本一致。易贡滑坡崩滑源区还发育2个潜在失稳区,潜在崩滑体方量约1.86×10^(8)m^(3),一旦失稳可能再次形成滑坡-堵江-溃坝灾害链,危害巨大,故提出了进一步加强易贡高位远程滑坡潜在崩滑体稳定性研究、灾害链流域性影响范围预测和监测预警等建议,对于指导该区正在规划建设的铁路、水利水电等重大工程建设和城镇防灾减灾具有重要意义。 | 袁浩 郭长宝 吴瑞安 闫怡秋 杨志华 | 2023 | 地质通报2023，42，10： | 0 |
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