Ocean engineering

1、Ocean EngineeringBrief IntroductionCoastal EngineeringOffshore EngineeringOcean EngineeringConclusionDeep Sea Technology（海岸工程）（近海工程） About 60% of the worlds population live in no more than 100 km from the coastal area Major channels and ports in the world:Waves contain enormous energy:Ocean disaster

2、:Ocean； humanSimplify the waves as regular sine waves(正弦波) through the mathematical statistic law（數(shù)理統(tǒng)計(jì)規(guī)律）波峰波谷波長振幅 Longshore Current (沿岸流) Rip CurrentRip Current ( (裂流裂流) )海岸工程學(xué) wave dispersion :The law of water particles motion(水質(zhì)點(diǎn)在水中的運(yùn)動(dòng)規(guī)律)VV?orThe law of water particles motion(水質(zhì)點(diǎn)在水中的運(yùn)動(dòng)規(guī)律)deep wate

3、r深水 finite water depth有限水深shallow water淺水文圣常: The pioneers of the wave field in our country (我國海浪研究領(lǐng)域的開拓者) End the phenomenon of using the foreign wave forecast method of long-term (結(jié)束了我國海浪預(yù)報(bào)長期使用國外方法的局面)Wave forecasting model (海浪預(yù)報(bào)模式) :theenergybalanceequationsofwave(海浪能量平衡方程)Harbor,water channels a

4、nd coastal engineering ,2011Part 2.Coastal EngineeringPart 2.Coastal Engineering. HarborPort of Dalian Wharf(碼頭碼頭)Channel(航道航道)Breakwaters(防波堤防波堤)Basin(港池港池).Breakwaters（防波堤）NavalportofXiaokouziVillage.Groins（丁壩）Vertical to the shoreline ,make the longshore sediment deposit.(沿岸泥沙落淤).Detachedbreakwat

5、ers（離岸堤）Parallel to the coast.RevetmentsSeawallBulkheads.(護(hù)岸護(hù)岸)Huge wavesCoastal erosion(岸線侵蝕岸線侵蝕)Landslide.Jetties（導(dǎo)堤）Shipping Channel in Mouth of Yangtse River. Cross-sea bridgeThe bridge spans 42.4km, cost 10 billion yuan . . Subsea tunnel(海底隧道)Jiaozhou Bay subsea tunnelThe channel tunnel(英吉利海底隧道

6、)The combine of cross-sea bridge and subsea tunnel HongKong-Zhuhai-MacauBridge Three most famous 、long-term construction projects Conclusion of coastal engineering:HarborCross-seabridgeSubseatunnelBreakwatersDetachedbreakwatersGroinsRevetmentsJettiesServe for the development of economy and our daily

7、 life. Protect the coastal,man-made construction.artificial island（人工島）offshore platform（海上平臺(tái)）protection（保護(hù)）The palm island（棕櫚島） in DubaiKansai International Airport(關(guān)西國際機(jī)場)The artificial island under constructionOffshore platformfixed structure above sea platform（固定式海上平臺(tái)）Floating stucture above sea

8、 platform（浮式海上平臺(tái)）Protection during constructionplan and design ecological waterways between the islandsuse environmental protection materialPart 4. Deep Sea TechnologyMarineresourcesexploit,2012。.Deep water system.Floating platform.Deep-sea drillingThe main technology of marine oil and gas explorati

9、onOil drilling derrick low float in the water, so as to avoid the effect by the wavesShallow waterDeep waterModerate depth. Mining marine mineral resourcesOcean exploration technologySeismic prospecting 地震勘探Gravity prospecting 重力勘探Magnetic prospecting 磁性勘探Part 5. ConclusionWhyweexploitoceansearchingforfood,resourcesandexpandthespace.Howweexploitoceancombinestheorywithpractice,useoceanengineeringtechnologytoconquertheoce