【摘要】 高速公路下伏采空区是路基路面及桥梁工程的严重隐患。高速公路下伏采空区在探测、排查的基础上,进行采空区稳定性评价,需对其地表各种变形值进行预计。本文采用概率积分法对采空区地表移动与变形值进行预计,计算并绘制出采空区主断面上的变形曲线;进而根据预计后的变形曲线,对采空区的稳定性做出准确的评价。实例预计结果表明,水平变形、地表倾斜和曲率均超过变形控制指标,采空区欠稳定,并以预计结果作为设计经济可行、技术可行的高速公路下伏采空区治理方案的依据。更多还原

【Abstract】 The mined-out areas which are beneath highways are serious hidden dangers to road subgrade and bridge projects.Based on the detection and investigation of mined-out areas,it needs to predict different kinds of deformation about the surface of highways when making stability evaluation for mined-out areas.The paper adopted the method of probability integral to estimate the movement and deformation of mined-out areas surface,then calculated and plotted out the deformation curve of the main section of mined-out areas.According to the deformation curve after prediction,an accurate assessment to the stability of mined-out areas was made.The predicted results of the examples showed that the horizontal deformation,the tilt and the curvature of the surface all exceeded the control index of the deformation,and the mined-out area was not so stable.Meanwhile it designed the economically and technically feasible governance program on the basis of predicted results.更多还原