输气管道变形模型试验分析

The Analysis of the Model Research on Pipeline Deformation

管道在采空区铺设通过时，采空区变形将不可避免的对埋设在采空区内的管道产生附加应力，使管道发生相应的变形甚至破坏。管道在采空区内的受力及变形特点与采空区沉陷盆地宽度和上覆地层重度密切相关。本文在合理的假设前提条件下，对穿越采矿地表沉陷盆地的输气管道进行模型试验研究，分析了不同沉陷盆地宽度和不同上覆地层厚度条件下，管道的挠曲变形特征。

When pipeline through the goal, the deformation of goaf will inevitably impose additional stress on the pipeline inside the mined-out area and result in corresponding deformation or failure of pipeline. The stress and deformation characteristic of pipeline in mined-out area is closely related to the width and heavy of subsidence basin. Under the condition of reasonable assumptions, this paper made a model test reseach on the pipeline across the mining surface of subsidence basin, and analyzed the bending deformation characteristics of the pipe under the condition of different width and thickness of subsidence basin.