复杂采煤区路基变形规律及影响因素分析

分析了山西省煤炭开采现状以及采空区路基变形基本规律,结合有限元数值分析软件,建立不同开采方式下的路基变形与受力分析模型进行分析.结果表明：自重应力和附加应力引起采空区顶板发生变形,影响路基稳定;煤层开采宽度越大,路基在水平和竖直方向位移越大;不均匀沉降引起路基弯曲、倾斜、基应力集中等现象;煤矿的复杂开采方式过程对路基变形影响差异较大,实际工程应当根据具体情况采取相应的支护措施.

Analysis of Deformation Characteristics and Influence Factors of Subgrade in Sophisticated Coal Extraction District

This article analyzed the present situation of coal mining in Shanxi characteristics of subgrade deformation in mined - out area. It combined with software and created a different way of exploitation under the subgrade deformation and results showed that ： The geostatic stress of top plate and additional stress of subgrade influence stability of subgrade. The wider coal mining exploitation, the greater subgrade province and the basic finite element analysis stress analysis model. The will cause deformation and displacement in horizontal and vertical direction will be. The unevenness subgrade subsidence will cause bending, tih, base stress concentration and other phenomena. The sophisticate mining methods of coal mine will produce different effects to subgrade, so, it is necessary to take the appropriate support measures according to the specific circumstances of the actual project.