Orthogonal intersecting pipeline main pipe roundness deviation intersecting line compensation method and system

The invention provides an orthogonal intersecting pipeline main pipe roundness deviation intersecting line compensation method and system. The method comprises the steps that the distance between a distance measuring device and each selected point obtained by scanning the upper wall of a main pipe through the distance measuring device is obtained; wherein the distance measuring equipment moves on a straight line parallel to the X-axis direction at a set height above the intersecting pipeline and vertically and downwards scans, and the X-axis is a horizontal axis perpendicular to the axis of the main pipe; calculating the distance from the distance measuring equipment to each selected point on the ideal intersecting model; obtaining the deviation of each selection point in the Z-axis direction according to the distance between the distance measuring equipment of the ideal intersecting model and each selection point, and correcting the intersecting line according to the deviation of each ...