采煤沉陷影响下高速公路路面损坏特征及应急措施

Study of Emergence Measure and Expressway Pavement Distress Characters under Mining Subsidence

针对某高速公路路面出现的凸起及开裂等损坏现象,通过现场勘测与计算分析,确定高速公路下的采煤活动是导致其路面发生变形破坏的根本原因,地表水平变形是导致路面损坏的主要变形,路面的凸起及开裂分别是由地表水平压缩变形和水平拉伸变形引起的,现场监控显示:高速公路路面凸起对行车安全的威胁要大于路面开裂。高速公路路面损坏的发生与高速公路结构、修筑材料与质量以及地表移动变形大小等因素有关。从巡视、警示、损坏路面处理及变形监测等4个方面对高速公路采煤沉陷区路段采取了应急措施,确保了高速公路的运营安全。

To some damage characters of heave and broken of express way pavement,according field survey and calculate analysis,the primary reasons that caused pavement deformation was mining under expressway,surface horizontal deformation was the main deformation that resulted pavement distress,pavement heave and broken were caused by surface horizontal compress deformation and horizontal tensile deformation,respectively,the field monitoring showed the express way pavement heave was danger to traffic safety than pavement broken. The express way broken were influenced by expressway structure,materials and quality and surface movement deformation and so on,the following emergence measures for express way mining subsidence section were put forward form four sides,which included inspection,caution,damage pavement treatment and deformation monitoring