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赵程,范宣梅,杨帆,等. 金沙江白格滑坡运动过程分析及潜在不稳定岩体预测[J]. 科学技术与工程, 2020, 20(10): 3860-3867.
zhaocheng,Yangfan,et al.Analysis of Movement Process of Baige Landslide in Jinsha River and Prediction of Potential Unstable Rock Mass Based on MassMov2D[J].Science Technology and Engineering,2020,20(10):3860-3867.
金沙江白格滑坡运动过程分析及潜在不稳定岩体预测
Analysis of Movement Process of Baige Landslide in Jinsha River and Prediction of Potential Unstable Rock Mass Based on MassMov2D
投稿时间:2019-07-16  修订日期:2019-12-31
DOI:
中文关键词:  白格滑坡 数值模拟 MassMov2D 潜在不稳定岩体预测
英文关键词:baige landslide numerical simulation massmov2d prediction of potentially unstable rock mas
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目),四川省国土资源厅科研项目,地质灾害防治与地质环境保护国家重点实验室团队重点课题
              
作者单位
赵程 成都理工大学
范宣梅 成都理工大学
杨帆 成都理工大学
周礼 成都理工大学
郭晨 成都理工大学
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中文摘要:
      2018年10月11日和11月3日于西藏江达县波罗乡白格村与四川省白玉县绒盖乡则巴村交界处,金沙江右岸先后发生两次滑坡,堵塞金沙江形成堰塞湖。第一次滑坡堵塞金沙江,于10月12日自然泄流于13日险情解除;第二次滑坡再次堵塞金沙江,在相关部门指导下,采用人工开挖导流槽的方式于11月12日开始泄洪,13日险情解除。本文采用Voellmy流变模型,基于PCRaster环境使用MassMov2D模拟了两次滑坡的运动和堆积过程,并使用第二次滑坡的反演结果对白格滑坡滑源区的三处潜在不稳定岩体做了预测分析。模拟结果表明:MassMov2D可以用于金沙江白格滑坡这种滑坡-碎屑流的模拟,两次滑坡的主要堆积区域和堆积厚度均于实际情况接近;利用第二次滑坡模拟反演参数预测三处潜在不稳定岩体,假设三处不稳定岩土体同时失稳滑动,会形成64 m高的堰塞坝,可能再次堵塞金沙江形成堰塞湖。
英文摘要:
      On October 11 and November 3, 2018, at the junction of Baige Village, Boluo Township, Jiangda County, Tibet, and Zeba Village, Ronggai Township, Baiyu County, Sichuan Province, two landslides occurred on the right bank of the Jinsha River, blocking the Jinsha River and forming a barrier lake. The first landslide blocked the Jinsha River and released its natural flow on October 12. The danger was relieved on October 13; The second landslide blocked the Jinsha River again. Under the guidance of relevant departments, the manual excavation of diversion channel was adopted to start the flood discharge on November 12, and the danger was relieved on November 13.Based on the Voellmy rheological model, MassMov2D is used to simulate the movement and accumulation of two landslides in the environment of PCRaster. The inversion results of the second landslide are used to predict and analyze three potentially unstable rock masses in the source area of Baige landslide. The simulation results show that: MassMov2D can be used to simulate the landslide-debris avalanche of Baige landslide in Jinsha River. The main accumulation areas and thickness of the two landslides are close to the actual situation. The inversion parameters of the second landslide simulation are used to predict three potentially unstable rock mass bodies. It is assumed that three unstable rock and soil bodies will slide simultaneously and form a 64 m high barrier dam, which may block up the Jinsha River again and form a barrier lake.
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