四川省山洪灾害风险评估与区划

doi:10.11988/ckyyb.20140518

PDF(2412 KB)

raybet体育在线院报 ›› 2015, Vol. 32 ›› Issue (12) : 41-45. DOI: 10.11988/ckyyb.20140518

工程安全与灾害防治

四川省山洪灾害风险评估与区划

丁文峰,杜俊,陈小平,任洪玉,张平仓

作者信息 +

Influence Mechanism of Deformation of Shuping Landslide in ThreeGorges Reservoir Area Under Water Level Variation

WANG Li¹,WANG Shi-mei²,XIANG Ling²

Author information +

文章历史 +

摘要

基于GIS技术以及全国山洪灾害防治规划资料,以四川省为例,借鉴自然灾害风险概念,对山洪灾害危险度、易损度和风险度进行了量化与分析,并根据区划理论的一般原则和全国山洪灾害一、二级防治分区范围,对四川省山洪灾害风险进行了区划。结果表明:四川省山洪灾害可划分为6个风险区划单元,5个风险等级(低风险区、较低风险区、中风险区、较高风险区、高风险区),各风险等级所占全省面积的比例分别为59.9%,12.8%,14.9%,5.9%和6.5%。其中,四川盆地及周边地区山洪灾害风险水平较高,中风险区等级以上的面积占到了四川盆地及周边总面积的近80%;其次,秦巴山地区为山洪灾害次严重地区,中风险区等级以上的面积占到了区域总面积的近18%;其它几个三级区域山洪灾害风险水平不高,大多处于低风险和较低风险水平。

Abstract

After impoundment of the Three Gorges reservoir, numerous landslides relevant to water have the signs of deformation. Deformation of most landslides rapidly increases, especially in the process of decline of reservoir water level. Shuping landslide, about 47 km from the dam site of Three Gorges, belongs to a kind of giant ancient accumulation body. Monitoring results for several years showed that Shuping landslide strongly deformed when reservoir water level dropped, significant losses will occur if the landslide loses stability. In light of the problem, we collected monitoring data of Shuping landslide in recent years and analyzed its deformation mechanism in association with geological survey and exploration data. The results show that: 1) the fluctuation of underground water level of Shuping landslide is consistent with that of reservoir water level, but the variation of reservoir water level is relatively lagged; 2) hydrodynamic pressure occurs in the condition of decline of reservoir water level, which is unfavorable to landslide stability, at the same time, GPS data indicate intense deformation of the landslide with typical features of hydrodynamic pressure-type landslide; 3) monitoring results measured by auto-recording displacement meter show that overall deformation is the main kind of deformations for Shuping landslide after impoundment with water level of 175 m, and it has deformation features of tractive landslide whose deformation in the bottom leads to slip in the top.

导出引用

丁文峰,杜俊,陈小平,任洪玉,张平仓. 四川省山洪灾害风险评估与区划[J]. raybet体育在线院报. 2015, 32(12): 41-45 https://doi.org/10.11988/ckyyb.20140518

WANG Li,WANG Shi-mei,XIANG Ling. Influence Mechanism of Deformation of Shuping Landslide in ThreeGorges Reservoir Area Under Water Level Variation[J]. Journal of Changjiang River Scientific Research Institute. 2015, 32(12): 41-45 https://doi.org/10.11988/ckyyb.20140518

中图分类号： S157.1

参考文献

[1] 长江水利委员会. 全国山洪灾害防治规划报告[R]. 武汉:长江水利委员会,2005. (Changjiang Water Resources Commission. The Mountain Torrent Disaster Prevention and Control of the National Planning Report[R]. Wuhan: Changjiang Water Resources Commission, 2005. (in Chinese))
[2] 唐川,师玉娥. 城市山洪灾害多目标评估方法探讨[J]. 地理科学进展, 2006, 25(4): 13-21. (TANG Chuan, SHI Yu-e. Multi-Objective Evaluation Method of Mountain Torrent Disaster in Urban Area[J]. Progress in Geography, 2006, 25(4): 13-21. (in Chinese)
[3] 石凝. 闽江流域灾害性洪水形成机理分析[J]. 水文, 2001, 21(3): 30-33. (SHI Ning. Flooding Disaster Mechanism of Minjiang River Watershed[J]. Hydrology, 2001, 21(3): 30-33. (in Chinese))
[4] 谢洪,陈杰,马东涛. 2002年6月陕西佛坪山洪灾害成因及特征[J]. 灾害学, 2002, 17(4) : 42-47. (XIE Hong, CHEN Jie, MA Dong-tao. Mountain Torrent Disaster Causes and Characteristics of Foping, Shaanxi Province in June, 2002[J]. Journal of catastrophology, 2002, 17(4) : 42-47. (in Chinese))
[5] 韦方强,崔鹏,钟敦伦.泥石流预报分类及其研究现状和发展方向[J].自然灾害学报,2004,13(5):10-15. (WEI Fang-qiang, CUI Peng, ZHONG Dun-lun. Classification of Debris Flow Forecast and Its Present Status and Development in Reseach[J]. Journal of Natural Disasters,2004, 13(5) : 10-15. (in Chinese))
[6] 许有鹏,于瑞宏,马宗伟. 长江中下游洪水灾害成因及洪水特征模拟分析[J]. 长江流域资源与环境,2005, 14(5): 638-644. (XU You-peng, YU Rui-hong, MA Zong-wei. Cause of Flood Disasters and Flood Characteristic Simulation Analysis of the Middle and Lower Reaches of the Yangtze River[J]. Resources and Environment in the Yangtze Basin, 2005, 14(5): 638-644. (in Chinese))
[7] 张春山,李国俊,张业成,等.黄河上游地区崩塌、滑坡、泥石流地质灾害区域危险性评价[J]. 地质力学学报, 2003, 9(2) : 143-153 .(ZHANG Chun-shan, LI Guo-jun, ZHANG Ye-cheng, et al. Collapse, Landslide and Debris Flow and Geological Disasters Risk Assessment of Upstream of the Yellow River[J]. Journal of Geomechanics, 2003, 9(2) : 143-153. (in Chinese))
[8] 赵士鹏. 中国山洪灾害的整体特征及其危险度区划的初步研究[J]. 自然灾害学报,1996, 5(3) : 93-99. (ZHAO Shi-peng. An Elementary Study on Whole Characteristics of Mountain Torrents Disaster System in China and Its Hazard Regionalization[J]. Journal of Natural Disasters, 1996, 5(3) : 93-99. (in Chinese))
[9] 钟敦伦,谢洪, 韦方强. 长江上游泥石流危险度区划研究[J]. 山地研究, 1994, 2(2) : 65-70 (ZHONG Dun-lun, XIE Hong, WEI Fang-qiang. Hazard Regionalization of Debris Flow in the Upstream of Yangtze River[J]. Journal of Mountain Research, 1994, 2(2) : 65-70 (in Chinese))
[10]朱静,唐川.云南省泥石流灾害危险度分区研究[J]. 中国地质灾害与防治学报, 1996,7(2): 86-93. (ZHU Jing, TANG Chuan. A Study on the Risk Regionalization of Debris Flow Hazards in Yunnan[J]. The Chinese Journal of Geological Hazard and Control, 1996,7(2): 86-93. (in Chinese))

基金

国家自然科学基金项目(41271303);国家“十二五”科技支撑计划课题(2012BAK10B04);水利部公益性行业科研专项经费(201301058,201301059);中央级公益性科研院所基本科研业务费项目(CKSF2013013/TB);raybet体育在线创新团队项目(CKSF2012052/TB)