西康高速公路K129滑坡失稳分析及治理工程动态设计与信息化施工

祝建; 姜海波; 蔡庆娥

西康高速公路K129滑坡失稳分析及治理工程动态设计与信息化施工

1.
西安中交公路岩土工程有限责任公司西安 710075;
3.
中煤西安设计工程有限责任公司西安 710054

详细信息

中图分类号: U418
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出版历程
- 收稿日期: 2011-06-30
- 修回日期: 2011-11-24
- 刊出日期: 2012-06-25

INSTABILITY ANALYSIS,OBSERVATIONAL DESIGN AND INFORMATIVE CONSTRUCTION OF K129 LANDSLIDE ON XIKANG HIGHWAY,SHAANXI

1.
Xi'an Geotechnical Engineering CO.,LTD of China Highway,Xi'an 710075;
2.
Xi'an Design Engineering CO.,LTD of China Coal,Xi'an 710054

摘要

摘要: K129滑坡位于陕西镇安县青铜镇梅花铺以东古滑坡体上,高速公路的修建迫使102省道向山侧改线,挖除古滑坡前缘近6×104m3土体,未采取合理的防护措施。2009年10月,古滑坡出现复活,变形迅速发展,造成高速公路路面隆起、挡墙开裂,呈现整体下滑趋势。滑坡一旦失稳,不仅中断西康高速公路和102省道,而且可能堵塞乾佑河,形成滑坡坝和堰塞湖,对上下游人民的生命财产造成严重威胁。针对该滑坡,以地质分析为基础,深入研究了滑坡的失稳破坏模式。分析发现,粉质黏土混碎块石与千枚岩组成的脆弱地质结构和水岩作用是形成滑坡的控制因素,集中降雨是滑坡发生的主要诱发因素,工程开挖削弱滑坡的锁固段,加速了滑坡的变形。同时,利用多种监测成果和施工反馈信息,反映出滑坡的变形速率特征和空间变形特征,即以后部推移为主,前部牵引为辅的基岩接触面滑坡,并及时采取应急抢险工程,调整设计和施工方案,做到动态设计和信息化施工,确保了滑坡治理工程安全顺利完成。
- 失稳机制 /
- 动态设计 /
- 信息化施工 /
- 地表位移监测 /
- 深部位移监测
Abstract: The K129 landslide is located on the ancient landslide which lies on the east of meihua village of qingtong town in Zhen'an county, Shaanxi. Due to constructing highway, a high slope was cut in the front of the ancient landslide. The cut volume was of 6.0?04m3.The ancient landslide was relived because no stabilizing measures were adopted in October, 2009.The deformation developed very quickly, and caused the road pavement to heave, the retaining wall to crack. If the whole landslide moved down, not only Xi'an-an'kang highway and Highway 102 were interrupted, but also Qianyou river jammed. The jam would be formed a landslide dam and a lake which would threaten the lives and property of the peoples round the river. In view of the landslide, on the basis of geologic analysis, authors investigate the landslide failure modes. It was found that the formation of landslide control factors was the fragile geologic framework composed by the silty clay mixed stone fragments and phyllite and water-rock reaction. Rainfall was the main factor inducing the landslide. Engineering excavation weakened the locked segment of landslide, accelerated the landslide deformation. Meantime, the characters of the deformation rate and spatial deformation in the landslide were reflected by the displacement monitoring datum and construction feedback information. Namely the landslide belonged to the bedrock interface landslide. The primary character is the back force. The minor one is the foreside pull. According to the study data, the emergency measures, design and construction options were adjusted in time, which ensured that the landslide treatment was completed successfully.
- Instability mechanism /
- Observational design /
- Informative construction /
- Ancient landslide /
- Site formation

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参考文献(1)

[1] 王恭先, 徐峻龄,刘光代,等.滑坡学与滑坡防治技术[M].北京: 中国铁道出版社, 2004.
Wang Gongxian,Xu Junling,Liu Guangdai,et al.Landslidology and Technique of Landslide Control.Beijing:China Railway Publishing House, 2004.
[2] 张倬元, 王士天,王兰生.工程地质分析原理(第二版)[M].北京: 地质出版社, 1994.
Zhang Zhuoyuan,Wang Shitian,Wang Lansheng.Analysis Theory of Engineering Geology.Beijing: Geological Publishing House, 1994.
[3] 李天斌, 陈明东.滑坡预报的几个基本问题[J].工程地质学报, 1999, 7 (3): 200~206.
Li Tianbin,Chen Mingdong.Some basic problems of the landslide prediction.Journal of Engineering Geology, 1999, 7 (3): 200~206.
[4] 靳晓光, 王兰生,李晓红.位移监测在滑坡时空运动研究中的应用[J].山地学报, 2002, 20 (5): 632~635.
Jin Xiaoguang,Wang Lansheng,Li Xiaohong.Application of displacement monitoring in study on space-time movement of landslide.Journal Mountain Science, 2002, 20 (5): 632~635.
[5] 韩建设. 岩土工程中滑坡监测的主要技术方法简述[J].西北电力, 2002, 2 : 57~59.
Han Jianshe.A brief of major techniques landslide monitoring in geotechnical works.Northwest Hydropower, 2002, 2 : 57~59.
[6] 韩爱果, 聂德新,任光明.滑坡变形监测系统深部与地表变形关系初探[J].山地学报, 2000, 18 (增): 108~111.
Han Aiguo,Nie Dexin,Ren Guangming.The importance of deformation monitoring system of landslide and preliminary research on relation between deep deformation and surface deformation.Journal of Mountain Science, 2000, 18 (Supp.): 108~111.
[7] 杨波, 郑颖人,赵尚毅,李安洪.双排抗滑桩在三种典型滑坡的计算与受力规律分析[J].岩土力学, 2010, 31 (s1): 237~244.
Yang Bo,Zheng Yingren,Zhao Shangyi,Li Anhong.Two-row anti-slide piles in three kinds of typical landslide computations and stress rule analysis.Rock and Soil Mechanics, 2010, 31(s1): 237~244.
[8] 熊治文, 马辉,朱海东.全埋式双排抗滑桩的受力分布[J].路基工程, 2002, 102 (3): 5~11.
Xiong Zhiwen,Ma Hui,Zhu Haidong.The distribution of mechanical properties in double-row embedded anti-slide piles.Subgrade Engineering, 2002, 102 (3): 5~11.
[9] 吕美君, 晏鄂川.埋入式双排抗滑桩滑坡推力分配研究[J].岩石力学与工程学报, 2005, 24 (S1): 4866~4871.
Lv Meijun,Yan Echuan.Study on distribution laws of landslide-thrust in double-row embedded anti-slide piles.Chinese Journal of Rock Mechanics and Engineering, 2005, 24 (S1): 4866~4871.
[10] 刘小丽, 周德培,杨涛.预应力锚索抗滑桩的动态设计法[J].西南交通大学学报, 2002, 10 (37): 491~495.
Liu Xiaoli,Zhou Depei,Yang Tao.Dynamic design method for friction pile with prestressed cable.Journal of Southwest JiaoTong University, 2002, 10 (37): 491~495.
[11] 靳晓光, 李晓红,王兰生,等.滑坡深部位移曲线特征及稳定性判识[J].山地学报, 2000, 18 (5): 440~444.
Jin Xiaoguang,Li Xiaohong,Wang Lansheng,et al.Characteristics of landslide deep displacement curve and stability discriminant.Journal of Mountain Science, 2000, 18 (5): 440~444.
[12] 靳晓光, 王兰生,李晓红.滑坡滑动面位置的确定及超前预测[J].中国地质灾害与防治学报, 2001, 12 (1): 10~12.
Jin Xiaoguang,Wang Lansheng,Li Xiaohong.Determination and advanced forcasting on slide plane position for landslide.The Chinese Journal of Geological Hazard and Control, 2001, 12 (1): 10~12.
[13] 秦四清. 滑坡工程治理优化设计与信息化施工[J].中国地质灾害与防治学报, 1999, 10 (2): 1~9.
Qin Siqing.Optimal design and information construction of landslide engineering treatment.The Chinese Journal of Geological Hazard and Control, 1999, 10 (2): 1~9.

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