Breakage Action and Defend Measures to Pipeline under Geological Disaster
Zuo Shang-zh · Welded Pipe and Tube · 2008
The long-distance pipelines distribute extensively,along which is complex geological profile,so geological disaster does not avoid.Analysis on pipeline accidents showed that there exist many kinds of geological disasters and different damage degrees in pipeline projects affecting from geographical environment,climate and human activity.Geographical disaster resulted in soil movement and ground deformation,so buried pipeline will occur bend,compress,distort,rip,and part flection and other breakage activities.There are three kinds of research methods including resolution method,numerical value method and test method to common disasters under condition of faultage,slope,flood and ground sink.Resolution method calculate expediently,it is easy to be applied into project;numerical value method is flexible and it can simulate really work condition;test method is more visual and with important meaning for research pipeline macroscopic deformation.During pipeline reconnaissance design,it should keep away from geologic area,if it is not avoidable that design should adopt reasonable layout plans and prevention actions to enhance the ability of pipeline resistance to geological disasters.For pipeline under in service,we should forecast disaster type and set up corresponding defend measures.