大口径管道单边定向钻穿越黄土冲沟的关键问题及解决措施

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中图分类号：TE973 文献标志码：A 文章编号：2095-2945（2025）21-0149-（

Abstract：Intheloessarea，ravinesarecriscrossedandsteepslopesareeverywhere.Whenoilandgaspipelinespass throughheloessarea，itisinevitabletorossthesteepslopeandscarpsection.Traditionaltrenchexcavation，backfillngand subsequentlandformrestorationarethekeyanddificultpointsoflong-distancepipelineconstruction.Inordertoensurethatthe soilerosionandenvironmentalproblemsarecontroledandtheprojectiseconomicalandreasonableduringtheconstructionperiod，thetrenchlessmethodcanbeusedforcrosing.ThispaperintroducesthewholeprocessofsendingD1219largediameter pipelineintheformofunilateraldirectionaldrillngtakingtheprojetofthethirdlineofwest-eastgaspipeline（Shanxisection）crossingloessgullyasanexample.Throughon-sitetestanalysis，，itwasdeterminedthattheanticorosivecoatingwaspro tectedintheformofafullwrappedpipelinewithaheatshrinkablebelt，anditwasweldedinsectionsandsenttothereservedhole.Afterthepipelineisinstalldinplace，thedeploymentmudisusedtofllandplugtheholes.Theengineeringeffect is good，which can provide reference for other similar projects.

Keywords：D1219pipeline；unilateraldirectionaldrillng；gllyrossing;pipelinetransmisson；hatshrinkabletapeprotection；mud ratio

西气东输三线（陕西段）是我国具有战略意义的能源运输大动脉，途径陕西黄土高原、关中断陷盆地、秦岭山地等。（剩余6454字）