Buried pipeline safety assessment method and related equipment

Abstract

The embodiment of the invention discloses a buried pipeline safety assessment method and related equipment. The method comprises the following steps: establishing a pipe-soil three-dimensional nonlinear finite element model of a buried pipeline; and establishing a training set according to the corresponding relation between pipeline stress influence parameters of different working conditions and the pipeline stress. The pipeline stress corresponding to the pipeline stress influence parameters of different working conditions is obtained through a finite element numerical simulation method. Themethod is more accurate and convenient compared with a theoretical calculation mode; the neural network has a strong nonlinear processing capability; neural network training can be carried out by using the training set to obtain a pipeline stress prediction model; the structural reliability of the buried pipeline is calculated according to a pipeline structural reliability calculation algorithm; the pipeline stress prediction model can be used for rapidly obtaining the pipeline stress, on the premise that the accuracy of a calculation result is guaranteed, the time needed by pipeline stress calculation is shortened, the calculation efficiency of the structural reliability of the buried pipeline is improved, and the safe operation management and technical level of the buried pipeline is improved.

Description

technical field [0001] The invention relates to the technical field of pipelines, in particular to a buried pipeline safety assessment method, a buried pipeline safety assessment device, a terminal device and a computer storage medium. Background technique [0002] During the service of the buried pipeline, due to the leakage of the pipe body, rain erosion, construction disturbance and other factors, part of the soil around the pipeline is hollowed out, and erosion pits are formed around the pipeline (the loss of part of the soil support of the pipeline section can also be called pipeline Under the action of overlying soil load and traffic load, a certain bending deformation or nozzle rotation will eventually lead to pipeline damage and instability. This is an irreversible and difficult to judge slow catastrophe process, which will cause huge economic losses to the society. and adverse effects. Therefore, it is urgent to solve this technical problem. Contents of the inven...

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Problems solved by technology

[0002] During the service of the buried pipeline, due to the leakage of the pipe body, rain erosion, construction disturbance and other factors, part of the soil around the pipeline is hollowed out, and erosion pits are formed around the pipeline (the loss of part of the soil support of the pipeline section can also be called pipeline Under the action of overlying soil load and traffic load, a certain bending deformation or nozzle rotation will eventually lead to pipeline damage and instability. This is an irreversible and difficult to judge slow catastrophe process, which will cause huge economic losses to society. and adverse effects

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