徐沛快速通道下伏煤层采空区稳定性分析与评价

Stability analysis and evaluation of underlie goaf in Xupei fast track

徐沛快速通道路线先后穿越王庄、垞城、马坡等煤矿采煤塌陷区.为了保证道路和桥梁的运营安全,项目组对沿线煤层采空区展开了详细的勘测调查.以垞城煤矿采空区为例,对采空区的空间特性,岩层的移动、变形与破坏规律,进行了分析与评价.研究结果表明:垞城煤矿采空区是稳定区,即采空区残余变形量小于公路规范的规定,其变形量不会导致公路损坏.

Xupei fast track successively cosses subsidence areas of Wangzhuang, Chacheng and Mapo coal mine. In order to ensure the operation safety of roads and bridges, project team carries out detailed survey on goals along the line. Taking the goal in Chacheng coal mine as an example, this paper carries out analysis and evaluation on spatial characteristic, stratum movement, and regularity of transformation and destruction. Results show that goal in Chacheng mine coal is a stable region, which means the residual deflection is less than the regulation of road specification, and will not bring about road damage.