简介:GiventherecentsuccessinthedevelopmentofseveralsubmersiblesinChina,people’sinterestinthehistoryofsubmersibledevelopmentisincreasing.ThispaperpresentsthehistoryofsubmersibledevelopmentinChina,whichcanbebrieflydividedintothreeperiods.Thefirstoneistheearlyperiodofhardship(1971–2000).ManyprototypesubmersiblesofHOVs,ROVs,andAUVsweredevelopedatthistime,butthemainachievementwastheestablishmentofspecialresearchorganizationsandthetrainingofresearchanddevelopmentpersonnel.Thesecondperiodcanberegardedasthequickdevelopmentperiod(2001–2015).Allcurrentlyusedsubmersiblesweredevelopedduringthisperiod.Themostremarkableachievementwasthesuccessfuldevelopmentof7000m-deepmannedsubmersibleBJiaolong.^Thethirdperiodaimstodevelop11000msubmersiblesforchallengingthefulloceandepth(2016–2020).Inthisperiod,twounmannedsubmersiblesandtwomannedsubmersibleswillbethesignificantindicatorsofachievement.Ifthis5-yearplancanbesuccessfullycompleted,Chinacanplayasignificantroleintheinvestigationofthedeepestpartoftheoceans,namely,thehadaltrenches(6500–11000m).
简介:WedevelopedadetailedsimulationmodeloftheArcticmarinetransportsystem(MTS)foroilplatformPrirazlomnaya.Themodelhasamultidisciplinarynatureandinvolves:sub-modelsofvarioustransportandtechnologicalprocesses;stochasticweathergeneratortoobtaintimeseriesof15environmentalparameters;andcontextualplanningalgorithmtobuildvoyageplanconsideringseveraltypesofshipsandcargoes.Weusedasignificantamountofrealoperationaldatatoidentifymodelparametersandtoproveitsstatisticalreliability.Ourmainscientifictaskistoinvestigatetheinteractionofvariousprocessesofadifferentnature,whilethepracticalaimistofindasetofmeasurestoincreasetheefficiencyofMTS.Theresultsofthestudyrevealmanyexamplesofthemutualinteractionofvariousprocessesthatneedtobeconsideredatthedesignstagetoavoidtechnicalmistakes.ThestudyformedabasisformakingmanagerialdecisionsatthetoplevelofGazpromNeftShelfCompany.