基于PFC2D的山区中小型水库滑坡堵江模拟研究
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摘要
水库滑坡是水利水电工程中最严重的灾害之一,尤其对中小型水库而言,直接影响其使用功能。综合众多学者的研究成果,以西南山区黄石盘水库黄角树滑坡为研究对象,分析该滑坡的失稳模式,并以经验法和PFC2D颗粒流模拟法对滑坡失稳造成的堵江高度进行预测,得出PFC2D颗粒流模拟预测滑坡堵江的可行性,对山区中小型水库滑坡堵江预测具有一定的参考价值。
Reservoir landslide is one of the most serious disasters in water conservancy and hydropower projects, especially for the small and medium-sized reservoirs, it can directly damage their function. Based on many research results, Huangjiaoshu landslide from the Huangshipan reservoir, Southwest Mountain Area, was chosen as the research object and the instability mode of this landslide was analyzed. The height of the river blocking caused by landslide failure was predicted according to the empirical method and the PFC2D particle flow simulation method. It was concluded that the PFC2D particle flow simulation was feasible in predicting the height of river blocking caused by landslides. It had a certain reference value for predicting the landslide damming, which can help predict landslide damming of small and medium-sized reservoirs in mountainous areas.
Reservoir landslide is one of the most serious disasters in water conservancy and hydropower projects, especially for the small and medium-sized reservoirs, it can directly damage their function. Based on many research results, Huangjiaoshu landslide from the Huangshipan reservoir, Southwest Mountain Area, was chosen as the research object and the instability mode of this landslide was analyzed. The height of the river blocking caused by landslide failure was predicted according to the empirical method and the PFC2D particle flow simulation method. It was concluded that the PFC2D particle flow simulation was feasible in predicting the height of river blocking caused by landslides. It had a certain reference value for predicting the landslide damming, which can help predict landslide damming of small and medium-sized reservoirs in mountainous areas.
引文
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[15] 陈俊,张东,黄晓明. 离散元颗粒流软件(PFC)在道路工程中的应用[M].北京:人民交通出版社股份有限公司, 2015.
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[2] 马建全. 黑方台灌区台缘黄土滑坡稳定性研究[D]. 长春:吉林大学, 2012.
[3] 原俊红. 白龙江中游滑坡堵江问题研究[D]. 兰州:兰州大学, 2007.
[4] 罗刚. 唐家山高速短程滑坡堵江及溃坝机制研究[D]. 成都:西南交通大学, 2012.
[5] 徐文杰, 陈祖煜, 何秉顺,等. 肖家桥滑坡堵江机制及灾害链效应研究[J]. 岩石力学与工程学报, 2010, 29(5):933-942.
[6] 李子隆, 许模, 赵勇,等. 基于 PFC2D 的岸坡覆盖层失稳堵江模拟研究[J]. 水力发电, 2018(1):27-30.
[7] 李子隆. 巴中黄石盘水库库区黄角树古滑坡前缘变形体稳定性分析及堵江预测研究 [D]. 成都:成都理工大学, 2017.
[8]梁承洋. 川藏交通廊道冰碛物滑坡堵江风险及线路对策研究[D]. 成都:西南交通大学, 2015.
[9]李子隆,许模,郭健.基于斜坡蠕变状态的反演参数取值方式[J].人民珠江,2016(8):39-42.
[10] 李子隆,许模,郭健,等.基于逐个修正法的滑带土参数取值优化[J].南水北调与水利科技,2017(2):170-175.
[11] 谌威, 许模, 郭健, 等. 山区中小型水库滑坡堵江预测及负效应分析[J]. 南水北调与水利科技, 2016, 16(1): 155-160.
[12] CUNDALL P A, STRACK O D L. Particle flow code in 2 Dimensions [C]//Itasca Consulting Group, Inc. 1999.
[13]CUNDALL P A, STRACK O D L. A Discrete Numerical Mode for Granular Assemblies [J]. Géotechnique, 1979, 29(1):47-65.
[14] 彭博, 陈玉明, 袁利伟. 基于 PFC2D马鞍山铁矿2号露天采场边坡稳定性分析[J]. 黄金, 2014(12):37-40.
[15] 陈俊,张东,黄晓明. 离散元颗粒流软件(PFC)在道路工程中的应用[M].北京:人民交通出版社股份有限公司, 2015.
[16] 周健,池永,池毓蔚,等.颗粒流方法及PFC2D程序[J].岩土力学,2000, 21(3):1-4.