矿煤开采沉陷区道路桥梁病害影响分析

The road and bridge diseases in the coal mining subsidence areas

根据煤矿采煤沉陷区发展特点,对黑龙江省鸡西市团结分离桥及桥头附近路面进行沉降监测,并对部分路段病害情况进行调查分析。文章认为:建设线路如无法避开变形剧烈的沉陷区,宜将线路布置在沉陷区的外边缘地段;在设计位于动态沉陷区的桥梁及路面时,宜采取简支结构桥梁等利于抵抗或吸收地表变形的桥梁结构;在动态沉陷区修建桥梁时,宜在地表移动期之后进行施工。

According to the characteristics of the development of the mining subsidence area, this paper analyzes the diseases of three bridges and sections that are affected by mining in different subsidence areas. According to the results of the analysis, it is concluded that, if the construction line cannot avoid the strenuous subsidence area, the line should be arranged in the outer edge of the subsidence area; when the bridge and pavement in the dynamic subsidence area are designed, a bridge structure, such as a simple support structure bridge, which is beneficial to resist or absorb the deformation of the ground surface, should be adopted. The construction of the bridge should be carried out after the surface movement period.