基于离散元模拟山地边坡变形失稳及注浆加固研究  

Study of slope instability and grouting consolidation

作　　者：刘健 LIU Jian(CNNC Geological Dadi Ecological Technology Co.,Ltd.,Beijing 100013)

机构地区：[1]中核大地生态科技有限公司,北京100013

出　　处：《福建建筑》2024年第8期70-73,83,共5页Fujian Architecture & Construction

摘　　要：针对清流县龙津镇渔沧社区长安路卫生局宿舍楼后山的边坡失稳问题,开展了边坡稳定性分析及注浆加固机理的研究。首先分析了工程背景和滑坡主要原因,之后利用SHPB动力加载装置,对不同含水状态下的注浆结石体进行了动力特性试验研究,从微观机制上分析含水状态对试样动态力学性能的影响。研究结果表明:注浆软岩结石体的动态抗压强度,随含水率的提高而降低。研究结果为边坡稳定性分析和注浆加固机理研究,提供了新的视角和方法具有重要应用意义。His manuscript presents an investigation into the slope instability occurring at the rear of the Health Bureau dormitory building,located on Chang'an Road within Yucan Community,Longjin Town,Qingliu County.The study commences with an elucidation of the engineering context and a dissection of the principal factors contributing to the landslide.Thereafter,the dynamic characteristics of grouted stone masses under varying moisture conditions were scrutinized via the Split Hopkinson Pressure Bar(SHPB)apparatus,probing into the influence of water saturation on the dynamic mechanical performance of the specimens from a microstructural standpoint.The outcomes of this research demonstrate a decrement in the dynamic compressive strength of the grouted soft rock aggregates with an escalation in moisture content.The insights garnered from this study contribute novel methodologies and perspectives to the analysis of slope stability and the investigation of grouting reinforcement mechanisms,underscoring their significance in the field.

关 键 词：注浆加固 稳定性分析 SHPB试验 数值模拟 微观机理 

分 类 号：TU4[建筑科学—土工工程]