一、引言 开采煤层时产生了采空区。多数情况下,顶板岩石崩落充填采空区处出现空隙,这种崩落过程最终将导致地表移动。 地表移动对地面设施会产生严重的破坏,如铁路、公路、建筑物、管道和其他设施。无疑,这种破坏可通过开采得到部分控制,但会影响采煤的经济性和可行性。由于管道与泥土之间的摩擦以及直接的位移,地表移动会使埋在地下的管道产生错动。研究的目的就在于弄清:煤柱回采出现空隙后管道可能受到的破坏。这里编制了一个计算机程序,用来预测一条横穿犹他州中心带一井工煤矿地面的天然气管道因地表沉陷受到的破坏。同时,对地表移动引起的管道变形进行了计算,并与管道所能承受的容许变形进 First, the introduction of coal mining produced a goaf. In most cases, voids appear in the gob of roof rock caving and filling, which eventually leads to surface movement. Surface movements can cause serious damage to surface facilities such as railways, highways, buildings, pipelines and other facilities. Undoubtedly, this damage can be partially controlled by mining, but it will affect the economy and feasibility of coal mining. Due to the friction between the pipeline and the soil as well as the direct displacement, the surface movement will cause the underground pipeline to be misplaced. The purpose of this research is to understand the possible damage to the pipe after the pits have been emptied. A computer program was prepared here to predict the destruction of a natural gas pipeline that traverses the surface of a coal mine with a borehole in the center of Utah. At the same time, the deformation of the pipeline caused by the movement of the earth surface is calculated and compared with the allowable deformation of the pipeline