大口徑管道單邊定向鉆穿越黃土沖溝的關(guān)鍵問題及解決措施

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中圖分類號：TE973 文獻(xiàn)標(biāo)志碼：A 文章編號：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

西氣東輸三線（陜西段）是我國具有戰(zhàn)略意義的能源運(yùn)輸大動脈，途徑陜西黃土高原、關(guān)中斷陷盆地、秦嶺山地等。（剩余6454字）