Long-distance cluster PE pipeline non-excavation crossing method
The invention provides a long-distance cluster PE pipeline non-excavation crossing method. The method comprises: assembling a PE pipeline bundle, welding a steel pipe, pulling the PE pipeline bundle into the steel pipe, welding the two ends of the steel pipe for enclosing, performing orientated hole...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention provides a long-distance cluster PE pipeline non-excavation crossing method. The method comprises: assembling a PE pipeline bundle, welding a steel pipe, pulling the PE pipeline bundle into the steel pipe, welding the two ends of the steel pipe for enclosing, performing orientated hole drilling and hole reaming, pulling the steel pipe with the PE pipeline bundle into a drilled hole, cutting off enclosed heads at the two ends of the steel pipe, and cabling. The method provided by the invention has the following advantages: river crossing of a long-distance cluster PE pipeline is turned into reality, the PE pipeline is completely prevented from drawing fracture resulted from the redrawing of the pipeline, the steel pipe at the periphery of the PE pipeline can also play the role of pipeline protection, and the life of the PE pipeline is prolonged. |
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