某高速公路红黏土特征及典型滑坡处治
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摘要
红黏土具有明显的干湿效应,工程敏感度高,工程性质差,常造成滑坡的成群分布。结合川东某高速公路发育的71处红黏土滑坡施工咨询成果,研究发现红黏土滑坡具有水敏感性高,滑坡体积相对较小,滑坡宽度与主轴之比L/m≥3的滑坡数量占比为74.7%,滑坡主轴长度与滑体厚度m/d≥3的滑坡数量占比为71.8%。滑面主要呈土岩界面型、同生圆弧型和大气影响直线型三类。并依据滑坡特征、变形原因,对红黏土滑坡采取的主要支挡、排水工程措施的应用特点进行了论述,并以成功治理的代表性工点对红黏土滑坡的处治方案进行了针对性说明,以期能对公路工程经过红黏土地区时的病害防治提供有效的借鉴和参考。
Red clay has obvious wetting-drying effects, high sensitivity and poor engineering properties, which often causes the distribution of landslides in groups. Based on the construction consulting results of 71 red clay landslides developed on a highway in eastern Sichuan Province, it is found that the red clay landslides have high water sensitivity, relatively small landslide volume, 74.7% landslides whose width(L) is more than 3 of the main axis(m), and 71.8% landslides whose length of the main axis(m) and thickness of the slides(d) are greater than 3. The slip surface is mainly composed of three types: soil rock interface type, co generation circular arc type and atmospheric influence straight line type. According to the landslide characteristics and deformation reasons, the application characteristics of the main retaining and drainage engineering measures adopted by the red clay landslide are discussed, and the treatment schemes of the red clay landslide are proposed with successfully treated representative sites. This paper can also provide disease prevention methods for the highway engineering passing through the red clay area.
Red clay has obvious wetting-drying effects, high sensitivity and poor engineering properties, which often causes the distribution of landslides in groups. Based on the construction consulting results of 71 red clay landslides developed on a highway in eastern Sichuan Province, it is found that the red clay landslides have high water sensitivity, relatively small landslide volume, 74.7% landslides whose width(L) is more than 3 of the main axis(m), and 71.8% landslides whose length of the main axis(m) and thickness of the slides(d) are greater than 3. The slip surface is mainly composed of three types: soil rock interface type, co generation circular arc type and atmospheric influence straight line type. According to the landslide characteristics and deformation reasons, the application characteristics of the main retaining and drainage engineering measures adopted by the red clay landslide are discussed, and the treatment schemes of the red clay landslide are proposed with successfully treated representative sites. This paper can also provide disease prevention methods for the highway engineering passing through the red clay area.
引文
[1] 成永刚,王明琪,李光白.川东红层区巴南广高速公路滑坡高发成因分析[J].地质灾害与环境保护,2016,27(3):1-6.
[2] 陈南,周勇,吴立坚.贵州红黏土边坡适用防护类型及合理坡率[J].交通科技,2016(2):121-124.
[3] 黄细超,任光明,周纵横,等.浅层滑坡中的地下水作用机理及治理方法概述[J].水利与建筑工程学报,2016,14(5):181-188.
[4] 方薇,杨果林,刘晓红.红黏土路堑边坡稳定因素敏感性正交试验分析[J].路基工程,2011(5):59-61.
[5] 郭永春,谢强,文江泉.我国红层分布特征及主要工程地质问题[J].水文地质工程地质,2007,34(6):67-71.
[6] 熊平生,罗文.中国南方第四纪红黏土的成因研究—以赣州盆地为例[J].地层学杂志,2013,37(3):336-342.
[7] 方薇,杨果林.武广客运专线红黏土变形特性的研究[J].铁道工程学报,2008,25(9):13-20.
[8] 续晓璟,朱飞,彭红明.通过滑坡变形特征分析其稳定性及定量计算的对比研究[J].水利与建筑工程学报,2017,15(3):161-164.
[9] 李江,许强,胡泽铭,等.川东红层原状滑带土饱水软化试验研究[J].岩石力学与工程学报,2015,34(2):4334-4342.
[10] 王运生,吴俊峰,魏鹏.四川盆地红层水岩作用岩石弱化时效性研究[J].岩石力学与工程学报,2009,28(1):3102-3108.
[11] 胡泽铭.四川红层地区缓倾角滑坡成因机制研究[D].成都:成都理工大学,2013.
[12] 黄润秋,陈龙生.中国的人类活动诱发滑坡灾害:机制及对灾害控制的意义[J].岩石力学与工程学报,2004,23(16):2766-2777.
[13] 赵志强,聂守智,何伟,等.巴东滑坡稳定性及影响因素敏感性分析[J].水利与建筑工程学报,2010,8(1):98-100.
[14] 罗渝,何思明,何尽川.降雨类型对浅层滑坡稳定性的影响[J].地球科学:中国地质大学学报,2014,39(9):1357-1363.
[15] 陈洪凯,翁其能.边坡岩体中地下水优化排水机理研究[J].地质灾害与环境保护,2000,11(2):112-115.
[16] 董金玉,郑珠光,赵志强,等.滑带土强度参数的水致弱化规律试验研究[J].华北水利水电大学学报(自然科学版),2016,37(2):83-86.DOI:10.3969/j.issn.1672-1144.2019.01.034第17卷第1期
2019年2月水利与建筑工程学报Journal of Water Resources and Architectural EngineeringVol.17 No.1Feb.,2019
[2] 陈南,周勇,吴立坚.贵州红黏土边坡适用防护类型及合理坡率[J].交通科技,2016(2):121-124.
[3] 黄细超,任光明,周纵横,等.浅层滑坡中的地下水作用机理及治理方法概述[J].水利与建筑工程学报,2016,14(5):181-188.
[4] 方薇,杨果林,刘晓红.红黏土路堑边坡稳定因素敏感性正交试验分析[J].路基工程,2011(5):59-61.
[5] 郭永春,谢强,文江泉.我国红层分布特征及主要工程地质问题[J].水文地质工程地质,2007,34(6):67-71.
[6] 熊平生,罗文.中国南方第四纪红黏土的成因研究—以赣州盆地为例[J].地层学杂志,2013,37(3):336-342.
[7] 方薇,杨果林.武广客运专线红黏土变形特性的研究[J].铁道工程学报,2008,25(9):13-20.
[8] 续晓璟,朱飞,彭红明.通过滑坡变形特征分析其稳定性及定量计算的对比研究[J].水利与建筑工程学报,2017,15(3):161-164.
[9] 李江,许强,胡泽铭,等.川东红层原状滑带土饱水软化试验研究[J].岩石力学与工程学报,2015,34(2):4334-4342.
[10] 王运生,吴俊峰,魏鹏.四川盆地红层水岩作用岩石弱化时效性研究[J].岩石力学与工程学报,2009,28(1):3102-3108.
[11] 胡泽铭.四川红层地区缓倾角滑坡成因机制研究[D].成都:成都理工大学,2013.
[12] 黄润秋,陈龙生.中国的人类活动诱发滑坡灾害:机制及对灾害控制的意义[J].岩石力学与工程学报,2004,23(16):2766-2777.
[13] 赵志强,聂守智,何伟,等.巴东滑坡稳定性及影响因素敏感性分析[J].水利与建筑工程学报,2010,8(1):98-100.
[14] 罗渝,何思明,何尽川.降雨类型对浅层滑坡稳定性的影响[J].地球科学:中国地质大学学报,2014,39(9):1357-1363.
[15] 陈洪凯,翁其能.边坡岩体中地下水优化排水机理研究[J].地质灾害与环境保护,2000,11(2):112-115.
[16] 董金玉,郑珠光,赵志强,等.滑带土强度参数的水致弱化规律试验研究[J].华北水利水电大学学报(自然科学版),2016,37(2):83-86.DOI:10.3969/j.issn.1672-1144.2019.01.034第17卷第1期
2019年2月水利与建筑工程学报Journal of Water Resources and Architectural EngineeringVol.17 No.1Feb.,2019