抗滑桩前预留岩体破坏模式及稳定性分析

doi:10.16265/j.cnki.issn1003-3033.2022.05.0935

中国安全科学学报 ›› 2022, Vol. 32 ›› Issue (5): 84-89.doi: 10.16265/j.cnki.issn1003-3033.2022.05.0935

抗滑桩前预留岩体破坏模式及稳定性分析

朱大鹏¹^,²(), 何磊¹, 田力¹, 秦粮凯³

¹ 西南石油大学地球科学与技术学院,四川成都 610500
² 三峡库区地质灾害教育部重点实验室(三峡大学),湖北宜昌 443002
³ 同济大学土木工程学院,上海 200092

收稿日期:2021-11-06 修回日期:2022-03-10 出版日期:2022-08-17 发布日期:2022-11-28
作者简介:
朱大鹏 (1981—),男,湖北天门人,博士,副教授,主要从事地质灾害防治理论方面的教学与研究工作。E-mail: zdpcug@126.com。
基金资助:
国家自然科学基金资助(41302256); 三峡库区地质灾害教育部重点实验室开放基金资助(2020KDZ06)

Study on failure mode and stability of reserved rock in front of anti-slide piles

ZHU Dapeng¹^,²(), HE Lei¹, TIAN Li¹, QIN Liangkai³

¹ School of Geoscience and Technology, Southwest Petroleum University, Chengdu Sichuan 610500, China
² Key Laboratory of Geological Hazards on Three Gorges Reservoir Area (China Three Gorges University), Ministry of Education, Yichang Hubei 443002, China
³ College of Civil Engineering, Tongji University, Shanghai 200092, China

Received:2021-11-06 Revised:2022-03-10 Online:2022-08-17 Published:2022-11-28

摘要/Abstract

摘要：

为了探究大开挖条件下桩前预留岩体的稳定性,首先基于相似理论开展不同宽度预留岩体的变形及破坏模式试验研究;然后基于极限平衡理论得到不同破坏模式下预留岩体稳定性计算公式;最后以湖南省某滑坡治理桩前大开挖为例,分析不同破坏模式下预留岩体的稳定性变化特征。结果表明:随着桩前预留岩体宽度的增加,其变形总体呈临空面外凸—少量裂缝—桩前岩体顶面隆起的发展趋势; 宽度较大的预留岩体易发生上滑移破坏,宽度较小的预留岩体则易发生下滑移破坏;下滑移破坏中,稳定系数随着预留岩体宽度的增大按开口向上的二次函数形式增加。

关键词: 抗滑桩, 预留岩体, 破坏模式, 稳定性, 滑移破坏, 滑坡治理

Abstract:

In order to study stability of rock mass reserved in front of anti-slide piles under large excavation condition, deformation and failure modes of reserved rock mass at different widths were tested and analyzed based on similarity theory. Secondly, formulas for stability calculation of rock mass under different failure modes were deduced according to limit equilibrium theory. Finally, with landslide in Hunan province as research object, stability variance features of the mass under each failure mode was analyzed. The results show that along with increase of width, deformation trend of reserved rock is always in the form of deformation of the excavation surface - a few cracks - local uplift deformation in front of piles. The rock mass with larger width is prone to up-slide failure, while that with smaller width is prone to down-slide one. As width increases, stability coefficient increases in form of a quadratic function with the opening upward under down-slide failure.

Key words: anti-slide pile, reserved rock, failure mode, stability, sliding failure, landslide treatment

朱大鹏, 何磊, 田力, 秦粮凯. 抗滑桩前预留岩体破坏模式及稳定性分析[J]. 中国安全科学学报, 2022, 32(5): 84-89.

ZHU Dapeng, HE Lei, TIAN Li, QIN Liangkai. Study on failure mode and stability of reserved rock in front of anti-slide piles[J]. China Safety Science Journal, 2022, 32(5): 84-89.

图/表 11

图1

图2

图3

图4

图5

图6

图7

图8

图9

图10

图11

参考文献 10

[1]	王玉峰, 程谦恭, 黄英儒. 不同支护模式下黄土高边坡开挖变形离心模型试验研究[J]. 岩石力学与工程学报, 2014, 33(5): 1032-1046.
	WANG Yufeng, CHENG Qiangong, HUANG Yingru. Centrifuge tests on excavation of high loess slope with different reinforcement modes[J]. Chinese Journal of Rock Mechanics and Engineering, 2014, 33 (5): 1032-1046.
[2]	闫强. 高速公路改扩建工程高边坡开挖过程稳定性研究[D]. 西安: 长安大学, 2015.
	YAN Qiang. Study on the slope stability in the excavation process of reconstruction highway[D]. Xi'an: Chang'an University, 2015.
[3]	戴自航. 抗滑桩滑坡推力和桩前滑体抗力分布规律的研究[J]. 岩石力学与工程学报, 2002, 21(4):517-521.
	DAI Zihang. Study on distribution laws of landslide-thrust and resistance of sliding mass acting on antislide piles[J]. Chinese Journal of Rock Mechanics and Engineering, 2002, 21(4):517-521.
[4]	孙勇. 桩前预留土体对抗滑桩影响的分析与计算研究[J]. 水文地质工程地质, 2008, 35(1): 58-63.
	SUN Yong. Researches on the anti-slide pile with remainning soils in front of pile[J]. Hydrogeology & Engineering Geology, 2008, 35(1): 58-63.
[5]	刘晓燕. 考虑桩前土体抗力的抗滑桩内力计算方法研究及工程应用[D]. 西安: 长安大学, 2017.
	LIU Xiaoyan. Research and application of internal force calculation method of anti slide piles considering soil resistance before anti-slide piles[D]. Xi'an: Chang'an University, 2017.
[6]	金佳旭, 崔红志, 梁冰, 等. 地震作用下尾矿库溃坝过程模型试验及加固方案[J]. 中国安全科学学报, 2017, 27(2):92-97. doi: 10.16265/j.cnki.issn1003-3033.2017.02.017
	JIN Jiaxu, CUI Hongzhi, LIANG Bing, et al. Model-based study on collapse of tailing sreservoir dam under earthquake action and reinforcement scheme[J]. China Safety Science Journal, 2017, 27(2):92-97. doi: 10.16265/j.cnki.issn1003-3033.2017.02.017
[7]	LI Tianye. Experimental study on indoor physical model of h-type anti-slide pile[J]. Hans Journal of Civil Engineering, 2018, 7(2):214-221. doi: 10.12677/HJCE.2018.72026
[8]	朱大鹏, 杨波, 何蕾. 抗滑桩桩前嵌固段岩体稳定性研究进展[J]. 人民长江, 2018, 49(增2): 269-273.
	ZHU Dapeng, YANG Bo, HE Lei. Research progress on stability of rock mass in front of anti-slide pile[J]. Yangtze River, 2018, 49(S2): 269-273.
[9]	罗元华, 伍法权, 常中华. 三峡库区奉节县新城区T₂b³泥质灰岩斜坡变形破坏模式的现象学研究[J]. 岩石力学与工程学报, 2005, 24(12):2029-2034.
	LUO Yuanhua, WU Faquan, CHANG Zhonghua. Phenomenology research on deformation and failure modes of slopes composed of a rgillaceous limestone of the third number of badong group (T₂b³) in new site of Fengjie county of Three Gorges reservoir area[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(12):2029-2034.
[10]	ZHU Dapeng, HE Lei, QIN Liangkai. Stability of the rock mass reserved in front of anti-slide piles[J]. KSCE Journal of Civil Engineering, 2022, 26(2): 569-583. doi: 10.1007/s12205-021-0315-3

[1]	张凯, 张科. 基于LightGBM算法的边坡稳定性预测研究[J]. 中国安全科学学报, 2022, 32(7): 113-120.
[2]	董金凤, 刘海卿, 雷明, 陈子木, 程杨, 徐红武. 轮扣式支模架结构整体稳定性分析[J]. 中国安全科学学报, 2022, 32(7): 85-92.
[3]	巩亚文, 刘应春, 景明举, 张英楠, 张彬. 二氧化硅凝胶泡沫材料制备及阻燃性能研究[J]. 中国安全科学学报, 2022, 32(5): 127-133.
[4]	金洪松, 易富, 戚旭鹏, 于汇泽, 杜常博, 于犇. 加筋尾矿稳定性及界面剪切模型[J]. 中国安全科学学报, 2022, 32(4): 86-92.
[5]	董建军, 杨嫡, 闫斌, 梅媛. 剧烈干湿交替下高海拔排土场安全稳定性研究[J]. 中国安全科学学报, 2022, 32(3): 75-83.
[6]	熊钰, 孔德中, 杨胜利, 吴桂义, 左宇军, 程占博. 大倾角工作面煤壁稳定性的云模型综合辨识[J]. 中国安全科学学报, 2022, 32(3): 144-151.
[7]	董建军, 梅媛, 李昕, 刘士乙, 闫斌. 高海拔排土场边坡安全稳定性SBAS-InSAR监测^*[J]. 中国安全科学学报, 2022, 32(1): 92-101.
[8]	王干, 郑忠宇, 段玮嘉, 潘勇. 咪唑类离子液体热不稳定性的试验研究[J]. 中国安全科学学报, 2021, 31(4): 163-170.
[9]	袁必和, 陶红吉, 孙亚如, 王连聪, 陈先锋, 谭海. 多孔矿物-聚磷酸铵对甲烷爆炸的协同抑制研究[J]. 中国安全科学学报, 2021, 31(3): 41-46.
[10]	李京, 胡斌, 刘艳章, 崔阿能. 回采巷道锚杆支护效果评判的改进突变级数法[J]. 中国安全科学学报, 2021, 31(3): 60-65.
[11]	张萌, 刘宏磊, 乔文光, 高勋. 排土场稳定性影响因素显著性研究[J]. 中国安全科学学报, 2021, 31(2): 69-75.
[12]	张津嘉. 台风条件下电网设备灾害演化机制^*[J]. 中国安全科学学报, 2021, 31(11): 179-184.
[13]	姚志洪, 金玉婷, 王思琛, 胡路, 蒋阳升. 混入智能网联汽车的交通流稳定性与安全性分析^*[J]. 中国安全科学学报, 2021, 31(10): 136-143.
[14]	欧红香, 叶青, 徐家成, 刘犇, 单雪影, 蒋军成. F-ZrP@Co-MOF协效膨胀阻燃聚丙烯性能研究[J]. 中国安全科学学报, 2021, 31(1): 52-59.
[15]	董建军, 杨嫡, 郑高阳, 谢郑权. 降雨条件下特高压输电线路基础安全稳定性研究[J]. 中国安全科学学报, 2021, 31(1): 116-124.

抗滑桩前预留岩体破坏模式及稳定性分析

Study on failure mode and stability of reserved rock in front of anti-slide piles

RichHTML

PDF

可视化

摘要/Abstract

引用本文

使用本文

图/表 11

参考文献 10

相关文章 15

编辑推荐

Metrics

本文评价