采动区公路枢纽站的地表残余移动变形分析

Analysis of Surface Residual Movement Deformation of Highway Junction Station by Underground Mining

针对大型公路枢纽站受采动残余移动变形的损害问题,将岩体视为非连续随机介质,基于朱广轶采动全盆地残余移动变形数学模型和ZMS2023软件,以区域受地表水影响的鹤岗南翔公路枢纽站受老采区地表残余移动变形影响为实体,进行了公路枢纽站的地基稳定性评价,含地表残余下沉、残余水平移动、残余倾斜变形、残余曲率变形、残余水平变形。通过其地表的损害等级评价得到结论:在规范视为地表的“稳定区”,除存在残余移动变形外,在岩体浅部工作面四周仍可能出现漏斗型塌陷坑。为此,对该项目采取了地基加固、可调整的抗采动变形建筑物和抗采动变形建筑物3种综合措施;在公路枢纽站的结构设计上采取了建筑规划措施、刚性措施、柔性措施。实践证明,对于复杂地质条件下老采区地表公路枢纽站的残余移动变形分析是适宜的。

Based on Zhu Guangyi’s mathematical model of residual moving deformation of the mining whole basin and ZMS2023 software, aiming at the damage problem of large highway hub stations caused by the residual moving deformation of mining, the rock mass was regarded as a discontinuous random medium, and the foundation stability evaluation of the highway hub station was carried out by the Hegang Nanxiang Highway Hub Station affected by surface water in the area affected by the surface water of the old mining area, including surface residual subsidence, residual horizontal movement, residual tilt deformation, residual curvature deformation, and residual horizontal deformation. Through the evaluation of the damage level of the surface, it is concluded that in the “stable zone” regarded as the surface by the norm, in addition to the residual moving deformation, funnel-shaped collapse pits may still occur around the shallow working face of the rock mass. To this end, three comprehensive measures were adopted for the project: foundation reinforcement, adjustable anti-mining deformation buildings and anti-mining deformation buildings. In the structural design of the highway hub station, architectural planning measures, rigid measures and flexible measures were adopted. Practice proves that the residual moving deformation analysis of surface highway hub stations in old mining areas under complex geological conditions is suitable.