Impact Damage Testing Study of Shanxi-Beijing Natural Gas Pipeline Based on Decision Tree Rotary Tiller Operation

The North China Plain and the agricultural region are crossed by the Shanxi-Beijing natural gas pipeline.Resi-dents in the area use rototillers for planting and harvesting;however,the depth of the rototillers into the ground is greater than the depth of the pipeline,posing a significant threat to the safe operation of the pipeline.Therefore,it is of great significance to study the dynamic response of rotary tillers impacting pipelines to ensure the safe opera-tion of pipelines.This article focuses on the Shanxi-Beijing natural gas pipeline,utilizingfinite element simulation software to establish afinite element model for the interaction among the machinery,pipeline,and soil,and ana-lyzing the dynamic response of the pipeline.At the same time,a decision tree model is introduced to classify the damage of pipelines under different working conditions,and the boundary value and importance of each influen-cing factor on pipeline damage are derived.Considering the actual conditions in the hemp yam planting area,targeted management measures have been proposed to ensure the operational safety of the Shanxi-Beijing natural gas pipeline in this region.

应力应变监控技术在某水毁治理工程中的应用

遭遇洪水冲刷而漂浮于河水中的管道对整条管道的安全运行存在很大的潜在威胁。对其进行沉管治理,对沉降管道进行力学分析,找出危险截面。在此基础上,针对沉管过程中管道受力复杂且难以控制从而导致管道破坏的问题,采用应力应变实时监控技术监测整个沉管过程中危险截面的实时应力应变情况,基于监测到的应力值提出相应的措施以控制沉管过程中管道危险截面的应力于许用范围之内。结果表明:在整个沉管过程中,应力应变监控技术为管道的安全沉降起到了指导作用。

一种针对第三方损害的便携式远程监测系统的开发

保护燃气管道免受第三方损害是我们面对的最大挑战。Toho燃气公司已经开发了一种便携式远程监测系统,这种系统可以实时探测对外露燃气管道的第三方损害。