高速公路下伏煤矿采空区变形分析及处治

Deformation analysis and treatment of coal mine goaf under highways

焦唐高速汝州至方城段下伏原荣发煤矿、苗李煤矿、金裕煤矿、外窑煤矿及外窑联办煤矿的采空区,这些采空区的残余变形将影响高速公路的稳定与安全。通过资料收集与分析、地质调查与测绘、物探探测、工程钻探查明了拟建高速公路下伏煤矿采空区的地质、采矿等特征,对煤矿采空区稳定性进行分析与评价,预测残余沉降变形量。鉴于高速公路下伏的煤矿采空区局部尚未达到稳沉状态,其引起的地表变形将对互通立交的施工及运营安全造成危害,采取了相应处治措施。

The coal mine goaf of the original Rongfa,Miaoli,Jinyu,Waiyao,and Waiyao Joint Coal Mine lie beneath the Ruzhou to Fangcheng section of the Jiaotang Expressway.The residual deformation of these goaf areas will affect the stability and safety of the expressway.Through data collection and analysis,geological survey and mapping,geophysical exploration,and engineering drilling,the geological and mining characteristics of goaf areas under the proposed expressway were identified,the stability of goaf areas was analyzed and evaluated,and the residual settlement deformation was predicted.Considering that the local goaf areas beneath the highway has not yet reached a stable settlement state,the surface deformation caused by it will pose a threat to the construction and operation safety of the interchange,and corresponding treatment measures have been taken.