潜在不稳定边坡复合式主动加固方法研究

作者:李培锋 李斯涛 李春 袁从华 廖明进
单位:云南玉临高速公路建设有限责任公司 云南交投集团投资有限公司 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室 武汉科技大学
摘要:公路工程建设中软岩和松散体类潜在不稳定边坡的滑坡问题频发,常规工程处治措施治理难度较大。结合某工程案例,通过室内试验研究了工程扰动和降雨条件下岩体抗剪强度的演化规律,结果表明工程扰动和降雨可使岩体强度下降超过20%,为充分利用开挖前岩体的初始强度,拟采用抗滑桩联合锚索框架的复合式主动加固方法进行边坡治理。对比分析主动与被动加固的差异,结果表明,基于主动加固思想的加固工程措施提高了边坡稳定性,避免了边坡岩土体受工程扰动后强度下降等不利后果,相比被动加固方法而言,可降低工程治理难度,减少工程量,降低工程造价。
关键词:边坡稳定性滑坡加固工程扰动抗滑桩锚索
作者简介:李培锋,高级工程师,E-mail:425585008@qq.com;*廖明进,博士,副教授,E-mail:215395090@qq.com。
基金:云南省交通运输厅科技项目(云交科教[2018]45号)。 -页码-:95-98
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参考文献[1] 李俊松.基于影响分区的大型基坑近接建筑物施工安全风险管理研究[D].成都:西南交通大学,2012.
[2] 王自高.西南地区深切河谷大型堆积体工程地质研究[D].成都:成都理工大学,2015.
[3] 成永刚.滑坡的区域性分布规律与防治方案研究[D].成都:西南交通大学,2013.
[4] 李忠,朱彦鹏,余俊.基于滑面上应力控制的边坡主动加固计算方法[J].岩石力学与工程学报,2008,27(5):979-989.
[5] 柏松平.云南复杂地质环境公路地质病害诱发机理及其对策研究[D].昆明:昆明理工大学,2008.
[6] 郑颖人,陈祖煜.边坡与滑坡工程治理[M].北京:人民交通出版社,2007.
[7] 杨辉.边坡稳定分析的有限元极限平衡法原理及程序实现[D].北京:北京交通大学,2014.
[8] 张志沛,韩彪,贺阳阳,等.基于现场监测数据的岩质高边坡加固有限元分析---以贵州山区某岩质高边坡为例[J].科学技术与工程,2020,20(6):2405-2410.
[9] 刘子振.持续降雨入渗非饱和黏土边坡失稳机理及其应用研究[D].兰州:兰州大学,2014.
[10] 刘小琳.主动锚与被动锚联合加固边坡机理研究[D].重庆:重庆交通大学,2014.
[11] 陶志平,周德培.滑坡地段隧道变形整治中抗滑桩的设计方法[J].山地学报,2003(5):620-623.
[12] 袁从华,吴振君,陈从新,等.山区高速公路边坡勘察设计常见问题分析[J].岩土力学,2010,31(S1):271-278.
[13] 袁从华,章光,杨明亮,等.某公路顺层滑坡的整治及对该区段选线的反思[J].岩土力学,2003,24(3):428-430.
[14] 袁从华,倪俊.高速公路中红砂岩滑坡特征及整治[J].岩土力学,2004,25(5):745-748.
Research on Composite Active Reinforcement Method for Potentially Unstable Slope
LI Peifeng LI Sitao LI Chun YUAN Conghua LIAO Mingjin
(Yunnan Yulin Expressway Construction Co.,Ltd. Yunnan Communications Investment & Construction Group Co.,Ltd. State Key Laboratory of Geo-mechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences Wuhan University of Science and Technology)
Abstract: In the construction of highway engineering,the landslide problems of soft rock and loose mass slope occur frequently,and it is difficult to control with conventional engineering treatment measures.Combined with an engineering case,the evolution law of shear strength of rock mass under engineering disturbance and rainfall conditions is studied through indoor test. The results show that the strength of rock mass can be reduced by more than 20% under engineering disturbance and rainfall. In order to make full use of the initial strength of rock mass before excavation,a scheme of slope treatment with active reinforcement is proposed. After comparing and analyzing the difference between active and passive reinforcement,the results show that the reinforcement engineering measures based on the active reinforcement idea can improve the slope stability,avoid the adverse consequences of slope rock and soil mass strength decline after engineering disturbance,compared with the passive reinforcement method,it can reduce the difficulty of engineering treatment,reduce the engineering quantity and reduce the project cost.
Keywords: slope stability; landslide; reinforcement; engineering disturbance; anti slide pile; anchor cable
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