采动区地表剩余变形对高等级公路影响预计分析

Prediction Analysis of High Class Highway Influenced by Surface Residual Deformation in Mining Zones

高等级公路建设中经常遇到公路穿越矿区采动影响区的问题。采动引起的地表移动变形是确定路基稳定性、分析采空区影响程度的主要依据。采动地表移动变形可分为连续移动变形与非连续移动变形两大类。在地表连续变形条件下 ,得出预计地表剩余沉陷引起移动变形的理论方法 ,由地表剩余变形等值线图形分析 ,划分其为不同的影响区 ,根据不同影响区位移变形的特点 ,给出适应于采动区移动变形要求的抗变形路基路面结构方法。

The case that high class highways are constructed in influenced regions by mining is common.The main principle to determine the stability of roadbed and to analyse the influence degree is the surface deformation caused by mining.The mining surface deformation can be divided into continuous and noncontinuous displacement deformation.Theory method is given to predict the displacement deformation caused by surface residual subsidence under continuous deformation conditions. Different influence zones are divided by the contour figure of surface residual deformation.According to the characteristics of displacement deformation of the influenced zones,a method is given to determine resisting deformation structure of roadbed and pavement fitting with displacement deformation of influenced zones by mining.