树坪滑坡切坡抗滑增稳优化治理数值模拟研究  

Numerical simulation study on optimization treatment of anti sliding and stability enhancement of cut slope of Shuping landslide

作　　者：吴丽丽 贺可强[1] 全恩厚 全恩伟 朱裕祥 吴远锋 WU Lili;HE Keqiang;QUAN Enhou;QUAN Enwei;ZHU Yuxiang;WU Yuanfeng(School of Ciwil Engineering,Qingdao University of Technology,Qingdao 266033,Shandong,China;Shandong Huatongqiao Engineering Co.,Ltd.,Linyi 273400,Shandong,China)

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]山东华通路桥工程有限公司,山东临沂273400

出　　处：《河南理工大学学报（自然科学版）》2022年第4期158-165,共8页Journal of Henan Polytechnic University（Natural Science）

基　　金：国家自然科学基金资助项目(41372297);三峡库区地质灾害教育部重点实验室(三峡大学)开放基金资助项目(2017KDZ03);山东省自然科学基金资助项目(ZR2020KE004)。

摘　　要：为了探究堆积层边坡切坡卸载过程中的稳定性规律,并为切坡工程提供合理的治理方案,本文分析了下滑动力和边坡变形响应特点,以及切坡卸载过程中的抗滑效应与稳定性增加规律,该规律为堆积层边坡优化治理方案的确定与数值模拟分析提供了理论基础。以三峡库区树坪滑坡A-A剖面为例,分析该滑坡的应急治理工程效果,提出4种计算工况并提出优化治理方案,用MIDAS GTS NX有限元分析软件对4种计算工况下的优化治理方案进行数值模拟,总结该滑坡在切坡卸载过程中的受力、变形及稳定性变化规律。结果表明:相较于应急治理工程,本文提出的优化治理方案稳定性系数高且满足要求,切方量下降8%。该结果验证了切坡抗滑增稳效应,可为边坡的切坡卸载提供理论参考。In order to explore the stability law of accumulation slope in the process of slope cutting and unloading,and to provide a reasonable treatment scheme for slope cutting engineering,the characteristics of sliding force and slope deformation response,the anti-sliding effect and stability increase law in the process of slope cutting and unloading were analyzed.This law provided a theoretical basis for the determination of optimal treatment scheme and numerical simulation analysis of accumulation slope.Taking the section A-A of Shuping landslide in the Three Gorges Reservoir Area as an example,the effect of emergency treatment of the landslide was analyzed,four calculation conditions were set,and the optimal treatment scheme was put forward.The optimal treatment scheme under four calculation conditions was numerically simulated by MIDAS GTS NX finite element analysis software,and the variation laws of stress,deformation and stability of the landslide in the process of slope cutting and unloading were summarized.The results showed that compared with the emergency treatment project,the stability coefficient of the optimized treatment scheme proposed in this study was improved,and the cutting quantity was reduced by 8%.The results verified the effect of anti-sliding and stability increasing of the slope cutting,and also provided a theoretical reference for the slope cutting and unloading.

关 键 词：树坪滑坡 边坡卸载 抗滑增稳效应 优化治理 

分 类 号：TU42[建筑科学—岩土工程]