基于随机介质理论的武云高速老空区段建设场地稳定性评价

发布时间：2018-07-11 21:44

本文选题：武云高速 + 老空区　；参考：《公路》2016年12期

【摘要】：老空区的稳定性影响其上覆高速公路的运营安全,准确地预估老空区地表的残余变形是判定老空区稳定性的基础。文中以武云高速老空区段建设场地为例,系统地研究了随机介质理论在老空区残余变形预测中的应用。首先阐述了随机介质理论预测老空区残余变形的合理性,而后给出了模型中参数的选取原则。基于Visual Basic编制了老空区地表残余变形预测系统,并对武云高速老空区段建设场地的残余变形进行了预计,结果表明:研究区域残余变形最大值小于高等级公路的地基容许变形值,可以认为其基本达到稳定状态。在此基础上,提出了武云高速老空区段建设场地的治理对策:采用加铺土工布、土工格栅等材料,提高路基的整体稳定性,同时路面采用柔性材料,以满足采空区剩余变形要求,确保高速公路通车安全。
[Abstract]:The stability of the old goaf affects the operation safety of the overlying freeway, and it is the basis of judging the stability of the old goaf to accurately estimate the residual deformation of the surface in the old goaf. In this paper, the application of random medium theory in prediction of residual deformation in old goaf is systematically studied by taking the construction site of Wuyun high-speed old goaf as an example. Firstly, the rationality of stochastic medium theory in predicting residual deformation in old space is expounded, and then the selection principle of parameters in the model is given. Based on Visual basic, the surface residual deformation prediction system in the old goaf is programmed, and the residual deformation of the construction site in the Wuyun high speed old goaf section is predicted. The results show that the maximum value of residual deformation in the studied area is less than the allowable deformation value of the foundation of high grade highway, and it can be considered as basically stable. On the basis of this, the paper puts forward some countermeasures for the construction site of Wuyun high speed old goaf section: adopting such materials as overlay geotextile, geogrid and so on, to improve the overall stability of roadbed, and at the same time, the pavement is made of flexible material. In order to meet the requirements of remaining deformation in goaf and ensure the safety of highway traffic.
【作者单位】：河南武云高速公路有限公司;中国矿业大学国土环境与灾害监测国家测绘地理信息局重点实验室;河南省交通规划设计研究院股份有限公司;
【基金】：国土环境与灾害监测国家测绘地理信息局重点实验室开放基金资助项目;项目编号LEDM2014B04 江苏省高校优势学科建设工程资助项目;项目编号SZBF2011-6-B35 江苏省普通高校研究生科研创新计划项目;项目编号KYLX15_1438
【分类号】：U416.1

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