塔柱状岩体崩塌运动特征分析

贺凯; 殷跃平; 李滨; 冯振

doi:10.13544/j.cnki.jeg.2015.01.013

塔柱状岩体崩塌运动特征分析

doi: 10.13544/j.cnki.jeg.2015.01.013

贺凯^1,3,
殷跃平²,
李滨³,
冯振³

1.
长安大学地质工程系西安 710054;
2.
中国地质环境监测院北京 100081;
3.
中国地质科学院地质力学研究所北京 100081

基金项目:

国家自然科学基金(41302246), 十二五国家科技支撑课题(2012BAK10B01), 中国地质调查局项目(1212011220140、12120114079101)资助

详细信息

作者简介:
贺凯(1986-),男,博士生,主要从事地质工程和地质灾害方面研究. Email: hekai2005@163.com

中图分类号: P642.21
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- 被引次数: 0
出版历程
- 收稿日期: 2014-04-22
- 修回日期: 2014-09-11
- 刊出日期: 2015-02-25

VIDEO IMAGED BASED ANALYSIS OF MOTION CHARACTERISTIC FOR TOWER ROCK COLLAPSE

1.
Department of Geological Engineering, Chang'an University, Xi'an 710054;
2.
China Institute of Geo-Environment Monitoring, Beijing 100081;
3.
Institute of Geomechanics, Chinese Academy of Geological Science, Beijing 100081

摘要

摘要: 塔状岩体是中国西南灰岩山区常见的地质灾害隐患.这类岩体点多面广,破坏频率极高,诱发因素甚多.以甑子岩危岩体为例,基于影像资料,详细剖析了塔状岩体的崩塌失稳过程,重点对其失稳过程中的运动特征开展了研究.认为甑子岩危岩失稳可分为启动、加速、碰撞3个运动阶段,塔状岩体的破坏从底部开始,在上覆岩体下坠过程中,呈现出由下至上、裂缝扩展、破坏传递、空中崩解的特点.研究发现甑子岩塔状岩体的加速度曲线在下降阶段表现出类似缓冲现象的连续负向波动,且不同位置测点的运动特征曲线具有显著的时效差异性,表明塔状岩体在失稳下坠过程中同步发生着破裂、碰撞、解体等变化.
- 塔状岩体 /
- 甑子岩 /
- 影像解析 /
- 崩塌失稳过程 /
- 运动特征
Abstract: Tower rock has a kind of common potential geohazard in limestone mountainous area of southwest China. This type of rocks is widely distributed and prone to be damaged. Their collapse can be induced by many factors. Taking Zengziyan perilous rock as example, this paper presents a detailed analysis of the process of tower rock collapse. The analyses of the collapse and especially for its motion characteristic are based on video data. The process of Zengziyan perilous rock collapse can be divided into three motion phases: startup phase, acceleration phase and collision phase. The failure begins at the bottom of tower rock. During the falling process, some features such as cracks propagation and damage transfer from the bottom up are taking place. The acceleration curve of Zengziyan tower rock shows a continuous negative fluctuation similar to buffering in declining stage. And motion characteristic curves of different monitoring locations have significant differences with time, which indicates that there are rupture, collision and disintegration synchronously when the tower rock falling.
- Tower rock /
- Zengziyan /
- Image dissection /
- Process of collapse /
- Motion characteristic

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参考文献(1)

Frayssines M, Hantz D. 2006. Failure mechanisms and triggering factors in calcareous cliffs of the Subalpine ranges(French Alps)[J]. Engineering Geology, 86 (4): 256～270.

Harbin Institute of Technology. 2004. Theoretical mechanics[M]. Beijing: Higher Education Press.

Huang B L, Yin Y P, Liu G N, et al. 2012. Analysis of waves generated by Gongjiafang landslide in Wu Gorge, Three Gorges Reservoir, on November 23, 2008[J]. Landslides, 9 (3): 395～405.

Huang R Q, Liu W H. 2008. Study on the movement characteristics of rolling rock blocks on platform[J]. Advances in Earth Science, 23 (5): 517～523.

Lü Q, Sun H Y, Zhai S K, et al. 2003. Evaluation models of rock fall trajectory[J]. Journal of Natural Disasters, 12 (2): 79～84.

Nichol S L, Hungr O, Evans S G. 2002. Largescale brittle and ductile toppling of rock slopes[J]. Canadian Geotechnical Journal, 9 (4): 773～788.

Peisser C D, Helmstetter A, Grasso J R, et al. 2002. Probabilistic approach to rock fall hazard assessment-Potential of historical data analysis[J]. Natural Hazards and Earth System Sciences, 2 (1): 15～26.

Poisel R, Eppensteiner W. 1988. A contribution to the systematics of rock mass movements[A]//Proceedings of the 5th International Symposium on Landslides[C]. Lausanne, Switzerland: 1353～1357.

Powell J W. 1875. Exploration of the Colorado River of the west and its tributaries[M]. Washington: Government Printing Office.

Ren Y R, Chen P, Zhang J, et al. 2005. Earlywarning analysis on the rockfall for Zenziyan W12^# dangerous rock mass in Nanchuan city of Chongqing[J]. The Chinese Journal of Geological Hazard and Control, 16 (2): 28～31, 37.

Tang H M, Yi P Y. 2003. Research on dangerous rock movement route[J]. Journal of Chongqing Jianzhu University, 25 (1): 17～23.

Terzaghi K. 1950. Mechanism of landslides[M]. The Geological Society of America, Engineering Geology(Berkey), 83～123.

Ya N, Wang L S, Zhao Q H, et al. 1996. Simulation study of rockfall kinematics[J]. Journal of Geological Hazards and Environment Preservation, 7 (2): 25～32.

Yin Y P. 2009. Rapid and long runout features of landslides triggered by the Wenchuan earthquake[J]. Journal of Engineering Geology, 17 (2): 153～166.

Zhang L Q, Yang Z F, Xu B. 2004. Rock falls and rock fall hazards[J]. Journal of Engineering Geology, 12 (3): 225～231.

Zhang Z Y, Wang S T, Wang L S. 1994. Principle of engineering geology analysis[M]. Beijing: Geological Publishing House.

哈尔滨工业大学. 2004. 理论力学[M]. 北京: 高等教育出版社.

黄润秋, 刘卫华. 2008. 滚石在平台上的运动特征分析[J]. 地球科学进展, 23 (5): 517～523.

吕庆, 孙红月, 翟三扣,等. 2003. 边坡滚石运动的计算模型[J]. 自然灾害学报, 12 (2): 79～84.

任幼蓉, 陈鹏, 张军,等. 2005. 重庆南川市甑子岩W12^#危岩崩塌预警分析[J]. 中国地质灾害与防治学报, 16 (2): 28～31, 37.

唐红梅, 易朋莹. 2003. 危岩落石运动路径研究[J]. 重庆建筑大学学报, 25 (1): 17～23.

亚南, 王兰生, 赵其华,等. 1996. 崩塌落石运动学的模拟研究[J]. 地质灾害与环境保护, 7 (2): 25～32.

殷跃平. 2009. 汶川八级地震滑坡高速远程特征分析[J]. 工程地质学报, 17 (2): 153～166.

张路青, 杨志法, 许兵. 2004. 滚石与滚石灾害[J]. 工程地质学报, 12 (3): 225～231.

张倬元, 王士天,王兰生. 1994. 工程地质分析原理[M]. 北京: 地质出版社.

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