In order to explore the influence of the goaf formed by coal mining on the safe operation of the overlaying pipeline,this paper established a numerical model of the overlaying pipeline in the goaf based on the actual three-dimensional terrain and combined with engineering examples,the material constitutive model and parameters based on the actual data was set,and finally the calculation results were analyzed.It included the influence of goaf mining process and pipeline operating pressure on pipeline settlement deformation and maximum surface settlement.The results show that with the development of mining process,the stress and displacement of pipeline increase.When the pipeline operating pressure changes,the stress on the pipeline changes,and the displacement generated by the pipeline basically does not change.
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