[1]许健,郑翔,张辉.黄土地区边坡冻融剥落病害机理及稳定性分析[J].西安建筑科技大学学报(自然科学版),2018,50(04):477-484.[doi:10.15986/j.1006-7930.2018.04.003]
　XU Jian,ZHENG Xiang,ZHANG Hui.Analysis on mechanism and stability of freeze-thaw spalling disease for slope in loess region[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2018,50(04):477-484.[doi:10.15986/j.1006-7930.2018.04.003]
点击复制

黄土地区边坡冻融剥落病害机理及稳定性分析()
分享到：

西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
50
期数:
2018年04期
页码:
477-484
栏目:
出版日期:
2018-08-31

文章信息/Info

Title:
Analysis on mechanism and stability of freeze-thaw spalling disease for slope in loess region
文章编号:
1006-7930(2018)04-0477-08
作者:
许健1; 郑翔1; 张辉2
1. 西安建筑科技大学 土木工程学院,陕西 西安 710055 ;2. 西安科技大学 建筑与土木工程学院,陕西 西安 710054 )
Author(s):
XU Jian1;  ZHENG Xiang1;  ZHANG Hui2
( 1. School of Civil Engineering, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China; 2. School of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an 710054, China)
关键词:
黄土边坡; 冻融作用; 剥落; 安全系数
Keywords:
loess slope;  freeze-thaw action;  spalling;  safety factor
分类号:
TU444
DOI:
10.15986/j.1006-7930.2018.04.003
文献标志码:
A
摘要:
通过现场调研、室内冻融试验及计算分析开展了黄土边坡冻融剥落病害机理及稳定性的研究.结果表明：冻融剥落病害分为表层冻融剥蚀、冻融层状剥落及微型冻融崩塌.随着冻融次数的增加，粘聚力呈指数衰减趋势；随着含水率的增加，粘聚力显著减小且在经历冻融后与含水率的变化曲线近似重合；而随着冻融次数的增加，内摩擦角并无明显变化，随含水率增加，内摩擦角呈线性衰减特征，但衰减幅度不大.安全系数随冻融次数增加亦呈指数衰减趋势，随剥落体含水率增加显著降低且冻融后安全系数与含水率的变化曲线近似重合，随冻融深度增加呈指数衰减趋势且含水率很高时其指数变化规律不明显
Abstract:
The paper studied mechanism and stability of freeze-thaw spalling disease through field investigation, indoor freeze-thaw test and computational analysis. The results show that the freeze-thaw spalling disease can be divided into freeze-thaw erosion of slope surface, freeze-thaw layer spalling and small freeze-thaw collapse. The cohesion exponentially decreases as freezing, and thawing times increase. With the increase of water content, the cohesion decreases greatly and has an approximately same variation after freezing and thawing. The internal friction angle has no obvious variation as the freezing and thawing times increase. With the increase of water content, the internal friction angle linearly decreases, but it has a small attenuation amplitude. The safety factor also exponentially decreases as the freezing and thawing times increase. As the water content of spaling mass increase, the safety factor decreases greatly and has an approximately same variation after freezing and thawing. The safety factor exponentially decreases with the increase of freezing-thawing depth and the exponential change law is not obvious for the spalling mass with high water content.

参考文献/References:

References

[1]叶万军，杨更社，常中华，等．黄土边坡剥落病害的发育特征及其发育程度评价[J]．工程地质学报，2011，19(1): 37-42.

YE Wanjun, YANG Gengshe, CHANG Zhonghua, et al. Characteristics of development state of spalling hazard in loess slope and its evaluation method [J]. Journal of Engineering Geology, 2011, 19(1): 37-42.

[2]方鹏.黄土边坡剥落病害处治技术研究[D].西安：长安大学，2007.

FANG Peng. Study on the punishment technology of flake in loess side slope [D]. Xi ’an: Chang’an University, 2007.

[3]李亚兰.黄土边坡坡面稳定性及防治措施研究[D].西安：长安大学，2005.

LI Yalan. Study on the prevention strategies and stability of loess slope surface [D]. Xi’an: Chang’an University, 2005.

[4]郭利平，叶万军，方鹏，等．开挖扰动导致黄土边坡产生剥落病害的机理分析[J]．西安科技大学学报，2010，30(4): 462-465,470.

GUO LIping, YE Wanjun, FANG Peng, et al. Mechanism of spalling hazard in loess slope induced by excavation disturbance [J]. Journal of Xi ’an University of Science and Technology, 2010, 30(4): 462-465,470.

[5]胡雄韬．甘肃省黄土地区路堑边坡防护[J]．甘肃科学学报，2006，18(2): 112-114.

HU Xiongtao. Protections for loess cutting sid slopes in Gansu Province [J]. Journal of Gansu Sciences, 2006, 18(2): 112-114.

[6]段钊，赵法锁，陈新建. 陕北黄土高原区崩塌发育类型及影响因素分析:以吴起县为例[J].自然灾害学报，2012, 21（6）：142-149.

DUAN Zhao，ZHAO Fasuo，CHEN Xinjian. Types and influencing factors of collapse development in loess plateau region of North Shaanxi: a case study of Wuqi County [J].Journal of Natural Disasters ,2012, 21(6): 142-149.

[7]叶万军，赵志鹏，杨更社，等．土体含水状态对黄土边坡剥落病害产生的影响[J]．中国公路学报，2015，28(7): 18-24.

YE Wanjun, ZHAO Zhipeng, YANG Gengshe, et al. Influence of soil moisture state on loess slope spalling hazards [J]. China Journal of Highway and Transport, 2015, 28(7): 18-24.

[8]毕贵权，张侠，李国玉，等. 冻融循环对黄土物理力学性质影响的试验[J].兰州理工大学学报，2010，36（2）: 114-117.

BI Guiquan, ZHANG Xia, LI Guoyu, et al. Experiment of impact of freezing-thawing cycle on physico-mechnical properties of loess [J]. Journal of Lanzhou University of Technology, 2010, 36(2): 114-117.

[9]王铁行，罗少锋，刘小军．考虑含水率影响的非饱和原状黄土冻融强度试验研究[J]．岩土力学，2010，31(8): 2378-2382.

WANG Tiehang, LUO Shaofeng, LIU Xiaojun. Testing study of freezing-thawing strength of unsaturated undisturbed loess considering influence of moisture content [J]. Rock and Soil Mechanics, 2010, 31(8): 2378-2382.

[10]周泓，张泽，秦琦，等．冻融循环作用下黄土基本物理性质变异性研究[J]．冰川冻土，2015，37(1)：162-168.

ZHOU Hong, ZHANG Ze, QIN Qi, et al. Research on variability of basic physical properties of loess under freezing-thawing cycles [J]. Journal of Glaciology and Geocryology, 2015, 37(1): 162-168.

[11]董晓宏，张爱军，连江波，等．长期冻融循环引起黄土强度劣化的试验研究[J]．工程地质学报，2010，18( 6): 887-893.

DONG Xiaohong, ZHANG Aijun, LIAN Jiangbo, et al. Laboratory study on shear strength deterioration of loess with long-term freezing-thawing cycles [J]. Journal of Engineering Geology, 2010, 18(6): 887-893.

[12]李国玉，马巍，李宁，等．冻融对压实黄土工程地质特性影响的试验研究[J]．水利与建筑工程学报, 2010，8(4): 5-7.

LI Guoyu, MA Wei, LI Ning, et al. Experimental research on impact of freezing and thawing on geotechnical properties of compacted loess [J]. Journal of Water Research and Architectural Engineering, 2010, 8(4):5-7.

[13]连江波, 张爱军, 郭敏霞, 等. 反复冻融循环对黄土空隙比及渗透性的影响[J]. 人民长江, 2010, 41(12): 55-58.

LIAN Jiangbo, ZHANG Aijun, GUO Minxia, et al. Influence of iterative freezing-thawing on void ratio and permeability coefficient of loess [J]. Yangtze River, 2010, 41(12): 55-58.

[14]肖东辉, 冯文杰, 张泽, 等．冻融循环对兰州黄土渗透性变化的影响[J]. 冰川冻土, 2014, 36(5): 1192-1198.

XIAO Donghui, FENG Wenjie, ZHANG Ze, et al. Research on the Lanzhou loess’s permeabilities changing with freezing-thawing cycles [J]. Journal of Glaciology and Geocryology, 2014, 36(5): 1192-1198.

[15]许健,王掌权,任建威,等.重塑黄土冻融过程抗剪强度劣化特性试验研究[J]. 西安建筑科技大学学报(自然科学版), 2017, 49(2):200-206.

XU Jian, WANG Zhangquan, REN Jianwei,et al. Experimental research on shear strength deterioration of remolded loess under

the freezing-thawing cycle [J].J. of Xi ’an Univ. of Arch.&Tech. ( Natural Science Edition),2017, 49(2):200-206.

[16]叶万军，杨更社，彭建兵，等．冻融循环导致洛川黄土边坡剥落病害产生机制的试验研究[J]．岩石力学与工程学报，2012，31(1): 199-205.

YE Wanjun, YANG Gengshe, PENG Jianbing, et al. Test research on mechanism of freezing-thawing cycle resulting in loess slope spalling hazards in luochuan [J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(1): 199-205.

[17]马世雄.冻融作用对黄土边坡剥落影响的试验研究[D].西安：西安科技大学，2012.

MA Shixiong. Experimental study of freezing-thawing to spalling of loess slope [D]. Xi ’an: Xi’an University of Science and Technology, 2012.

[18]王掌权, 许健, 郑翔,等. 反复冻融条件下黄土边坡稳定性分析[J]. 中国地质灾害与防治学报, 2017, 28(2):15-21.

相似文献/References:

[1]李 萍,王 宁,高德彬,等.山西河南西部地区黄土高边坡可靠度分析[J].西安建筑科技大学学报(自然科学版),2013,45(04):574.[doi:10.15986/j.1006-7930.2013.04.019]
　LI Ping,WANG Ning,GAO De-bin,et al.Analysis on the reliability of the loess slopes in West Shanxi and Henan Provinces[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2013,45(04):574.[doi:10.15986/j.1006-7930.2013.04.019]
[2]王雪艳,袁一力,张珊珊.陕北地区黄土自然高边坡与填方边坡可靠度分析[J].西安建筑科技大学学报(自然科学版),2021,53(05):665.[doi:10.15986/j.1006-7930.2021.05.008 ]
　WANG Xueyan,YUAN Yili,ZHANG Shanshan.Reliability analysis of natural high loess slope and backfill slope in Northern Shaanxi area[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2021,53(04):665.[doi:10.15986/j.1006-7930.2021.05.008 ]

备注/Memo

备注/Memo:
收稿日期:2017-03-08修改稿日期:2018-07-05
基金项目:国家自然科学基金项目（51478385, 51208409）
第一作者:许健（1980－），男，博士，副教授，主要从事寒区岩土工程研究.E-mail：xujian@xauat.edu.cn
更新日期/Last Update: 2018-09-11