考虑降雨和地震作用下的铁路边坡稳定性分析  

Stability Analysis of Railway Slope under Rainfall and Earthquake

作　　者：李晶 梁力川 邵雪停 季军远[1] 王玉[2] LI Jing;LIANG Li-chuan;SHAO Xue-ting;JI Jun-yuan;WANG Yu(College of Environment Science and Engineering,Ocean University of China,Qingdao 266000,China;Soil and Agriculture Rural Ecological Environment Supervision Technology Center,Ministry of Ecology and Environment,Beijing 100012,China;Resource Environment and Tourism Management,Capital Normal University,Beijing 100048,China)

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266000 [2]首都师范大学资源环境与旅游管理学院,北京100048 [3]生态环境部土壤与农业农村生态环境监管技术中心,北京100012

出　　处：《山东农业大学学报（自然科学版）》2023年第6期887-896,共10页Journal of Shandong Agricultural University：Natural Science Edition

基　　金：国家重大研发计划(2020YFC1806403-3)。

摘　　要：采用力学分析和数值模拟的方法对边坡进行了稳定性的研究和评价。首先,对铁路路基边坡的周边环境和滑坡形成原因进行了现场勘探,选择边坡侵蚀严重的剖面,分别采用简化Bishop法和数值模拟的方式,计算并比较边坡在自然、降雨和地震三种状态下的安全系数。之后采用抗滑桩护坡、浆砌石锚杆桩护坡和挡土墙护坡三种方案进行治理,并对治理后的边坡进行了稳定性分析。最后分析了不同的抗滑桩长宽度、锚杆的长度与直径和挡土墙高宽度对边坡安全系数的影响并总结规律。结果表明,三种方案都显著提高了路基边坡的稳定性。边坡安全系数随着挡土墙高度增加呈线性增长,且随着抗滑桩宽度与锚杆直径的增加而增长。当抗滑桩长度增加到12 m、锚杆长度的增加到10 m后,其对边坡抗滑能力的提升趋势不再明显。We studied and evaluated the stability of the slope by theoretical calculation and numerical simulation.Firstly,weinvestigated the surrounding environment of the railway subgrade slope and the causes of landslide in the field,and selectedthe section with severe slope erosion.The safety factors of the slope under natural,rainfall and earthquake conditions werecompared and analyzed by adopting the simplified Bishop method and the numerical simulation method.After that,thestability of the treated slope by the anti-slide pile slope protection,grouted rubble with anchor stock slope protection andretaining wall slope protection were analyzed.Finally,we analyzed the influence of different length and width of anti-slidepile,length and diameter of anchor stock and height and width of retaining wall on slope safety factor and summarizedtherule.The results show the subgrade slope can remain stable state after the treatment of three schemes.With the increase of retaining wall height,the slope safety factor increases linearly.When the length of anti-sliding pile increases to 12 mandthelength of anchor stock increases to 10 m,the improvement trend of anti-slide ability of slope is no longer obvious.

关 键 词：铁路边坡滑坡 强度折减法 治理措施 稳定性分析 

分 类 号：U213.158[交通运输工程—道路与铁道工程]