鄂尔多斯气煤叠置区工作面的高强度回采极易导致地表浅埋油气管线变形失效，明确工作面推进过程中管道破坏的时序规律，对集输管线的精准维护和参数优化具有重要意义。首先，通过理论分析提出了体积应变的理论算法。其次，通过体积应变极限分别构建了管道局部拉伸和压缩状态下失效破坏判别的新方法。然后，通过数值模拟分析了管道轴向和环向的变形和体积应变，明确了埋地管道破坏的时序规律。同时，将数值结果与监测数据和理论结果进行对比分析，验证了试验结果的合理性和准确性。结果表明：以直径为508 mm的输气管道为例，拉伸和压缩状态下油气管道的体积应变极限分别为0.42%、−0.31%。工作面向管道靠近过程中管道的变形量总小于覆岩，二者为非协同变形，且工作面距管道越近非协同变形程度越大。在轴线方向上，管道的变形曲线均呈现漏斗状。管道的椭圆度随着管道与工作面间距离的缩小而逐渐减小，且二者间数学关系可用指数函数表达。管道拐点至端部体积应变大于零、拐点之间小于零，整体的体积应变关于沉陷中心位置左右对称。管道底部和顶部的体积应变分布并不对称，且同一轴向位置处顶部的体积应变绝对值总大于底部。管道顶底部破坏轮廓分别呈现“∩”和“∪”，同一轴向位置上的破坏轮廓呈现“S”。管道轴向易破坏的位置及形式：顶部中心压缩破坏、顶部两端拉伸破坏。采煤工作面逐渐靠近管道过程中，管道中心至拐点、端部至拐点均从先到后依次破坏，且中心位置破坏早于两端、顶部的破坏早于底部。与此同时，管道在环向上的破坏由270°向180°偏转，其中330°～150°是最易发生破坏的方位；最小变形由120°向0°偏转。最后，通过地表沉降量、管道的变形量、椭圆度、剪应力等指标验证了结果的可靠性。研究结果进一步明确了埋地管道破坏的方位和时序，有利于管输工程的精准维护和高效施工，为促进油−气−煤资源的协调开采提供借鉴。

The high-intensity mining of coal face in the Ordos gas-coal overlapping area can easily lead to the failure of shallowly buried oil & gas pipelines. It is of great significance to clarify the time series of the pipeline failure during the advancing process of the panel in this area for the accurate maintenance and parameter optimization of the gathering and transmission pipelines. Firstly, the theoretical algorithm of volume strain (VS) is proposed through theoretical analysis. Then, a new method for failure damage discrimination in the tensile and compressive states locally is respectively constructed by the volume strain limit. Next, the deformation and volumetric strain of the pipeline in the axial and circumferential directions were analyzed by numerical simulation, and the time series law of buried pipeline damage was clarified. At the same time, the numerical results are compared and analyzed with the monitoring data and theoretical results to verify the reasonableness and accuracy of the experimental results. The results show that the volumetric strain limits in tension and compression are, for example, 0.42% and −0.31% for a 508 mm diameter gas transmission pipe. The deformation of the pipeline is smaller than that of the overburden during the process of panel advancing, and the deformation between them is non-synergistic. The closer the panel is to the pipeline, the greater the degree of non-synergistic. In the axial direction, the deformation curves of the tubes are funnel-shaped. The ellipticity of the tube decreases as the distance between the tube and the panel decreases, and the mathematical relationship between them can be expressed as an exponential function. The volume strain between the inflection points of the pipeline is always less than 0, and the VS from the inflection point to the end is always greater than 0. Furthermore, the volume strain of the pipe is symmetrical to the left and right about the position of the center of the subsidence. The volume strain distribution at the bottom and top of the pipe is not symmetrical, and the absolute value of the volume strain at the top is always greater than that at the bottom at the same axial position. The failure profiles at the top and bottom of the pipeline are shown as “∩” and “∪”, and at the same axial position show “S”. The location and pattern of axial damage of the pipeline: compression damage at the bottom center, and tensile damage at the bottom two ends. The panel is gradually approaching the pipeline process, the failure from the center to the inflection point and from the end to the inflection point of the pipeline is successively generated, and the center is earlier than that at both ends, and the top is earlier than the bottom. At the same time, the failure of the pipeline ring is the transfer from 270° to 180°, where 330°-150° is the most vulnerable to damage orientation, and the minimum deformation is the transfer from 120° to 0°. Finally, the reliability of the results was verified by the deformation, the ellipticity, the shear stress of the pipe, and the ground settlement. The research results further clarify the orientation and time series rule of pipeline failure, which is conducive to the precise maintenance and efficient construction of pipeline projects and provides a reference for promoting the coordinated mining of oil-gas-coal resources.