隐伏型岩溶路基塌陷机理与处治技术研究  

Study on Mechanism Analysis and Treatment Technology of Hidden Karst Subgrade Collapse

作　　者：魏占坡 WEI Zhanpo(China Railway 14th Bureau Group 3rd Engineering Co.Ltd.,Jinan Shandong 250300,China)

机构地区：[1]中铁十四局集团第三工程有限公司,山东济南250300

出　　处：《铁道建筑技术》2025年第3期176-179,199,共5页Railway Construction Technology

基　　金：中铁十四局集团有限公司科研课题(913700001630559891202308)。

摘　　要：处于基底可溶岩较发育地段,由于地下水侵蚀及外界地质环境的影响,容易造成隐伏型岩溶路基的突发性坍塌,严重影响道路结构的耐久性和稳定性。为了避免岩溶路基坍塌及不均匀沉降,通过对隐伏型岩溶路基发育特征与形成机理的分析,以在建沪宁合铁路试验段工程为依托,确定了采用单孔充填注浆方式对岩溶路基进行加固处理,并通过有限元对路面进行仿真研究,得到了路面沉降随时间的变化规律。最后,利用无损检测技术对岩芯进行质量检测,确保注浆施工质量。In the developing area of basement soluble rock,due to the influence of groundwater erosion and external geological environment,it is easy to cause the sudden collapse of concealed karst subgrade,which seriously affects the durability and stability of the road structure.In order to avoid karst subgrade collapse and uneven settlement,through the analysis of concealed karst subgrade development characteristics and formation mechanism,based on the ongoing construction of the trial section of Shanghai-Nanjing-Hefei Railway Project,the single-hole flling grouting way of karst subgrade reinforcement was determined and through finite element simulation research on the road surface,the variation law of road settlement with time was obtained.Finally,the nondestructive testing technology is used to test the quality of the core to ensure the quality of grouting construction.

关 键 词：隐伏型岩溶路基 岩溶发育 岩溶注浆 无损检测 

分 类 号：U213.1[交通运输工程—道路与铁道工程]