穿越老采空区的高速公路路基变形损害评价指标研究

针对目前老采空区上方高速公路损害变形评价指标研究不足的问题,运用开采沉陷理论、力学原理和数学方法及相关的道路规范,对老采空区上方路基损害变形评价指标进行了研究。研究结果表明:不同的道路线形、速度等条件下,应以不同的评价标准进行判定;与以往采用的损害变形评价指标相比,有较大不同,允许的倾斜变形值较大,曲率、水平变形值较小;最终将理论结果应用于实际,得到较好的验证。

Research on Damage Assessment Index of Freeway Subgrade Over Old Mining Goaf

The current study is inadequate in the damage assessment indexes of freeway subgrade over old mining goaf.In this paper,damage assessment indexes of freeway subgrade over mining goaf were studied by using theories of mining subsidence,mechanics,mathematical methods and associated road specifications.The results showed that freeway damage and deformation with different shape,different speed and other conditions should be determined by using different assessment criterions.The method in this paper is different from traditional assessment indexes,and it allows a larger tilt deformation and smaller curvature and horizontal deformation.The research results were put into practice and the feasibility of the theory was verified.