粉砂质页岩高边坡滑坡动力稳定性分析及防治效果评价  

Dynamic Stability Analysis and Prevention Effect Evaluation of Silty Shale Landslide on High Slope

作　　者：张卢明 周勇 岳建国 胡鹏 金斌 ZHANG Luming;ZHOU Yong;YUE Jianguo;HU Peng;JIN Bin(Nuclear Industry Southwest Survey&Design Institute Co.,Ltd.,Chengdu 610061,China)

机构地区：[1]核工业西南勘察设计研究院有限公司,四川成都610061

出　　处：《湖南科技大学学报（自然科学版）》2021年第3期34-42,共9页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：国防基础科研计划项目资助(A0220110003);国防科技工业局科研项目资助(科工二司[2015]548号)。

摘　　要：飞凤山低中放固体废物处置场滑坡自2013年—2014年间历经数次整治,多次修建防滑工程后均未根治,2014年坡体再次发生较大变形,2015年再次进行了综合治理.2008年汶川大地震后,该场地的地震动水平峰值加速度由原来的0.15g提高到0.33g,是原稳定性评价所采用的地震加速度值的2倍之多,整治后的斜坡存在抗震失稳风险.以其中的2#滑坡为例,采用有限差分动力分析法对整治后的滑坡进行抗震稳定性分析,同时结合现场监测评估坡体的安全性.研究结果表明:斜坡在0.33g地震作用下整体稳定,加固效果良好,并节约了工程投资.其研究成果可为核安全领域类似工程提供技术支持.From 2013 to 2014, the landslide of Feifeng mountain low and medium level solid waste disposal site wastreated several times, and the anti-skid works were not completely cured after many times of construction. In 2014, the slope body once again had large deformation, and in 2015, comprehensive treatment was carried out again. After the Wenchuan earthquake in 2008, the design basis ground motion horizontal peak acceleration of the site increased from the original 0.15g to 0.33g, which was more than two times of the original seismic acceleration value used in the original stability evaluation. There was a risk of seismic instability for the slope after treatment. Taking the 2# landslides as an example, the seismic stability of the treated landslides was analyzed by the finite difference dynamic analysis method, and the safety of the slopes was evaluated by combining with the field monitoring. The research results show that the slope is stable under 0.33g earthquake, and the reinforcement effect is good, so the project investment is saved. The research results provide technical support for similar projects in the field of nuclear safety.

关 键 词：低中放废物处置场 抗震稳定性 工程监测 有限差分法 

分 类 号：P642.22[天文地球—工程地质学]