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11 个结果
  • 简介:TheHydrobiosinDongpingLake,ShandongProvince,mainlyincludesphytoplankton,zooplankton,benthicanimals,fishesandhydrophyticvascularplants.Nitrogenandphosphorusaretherestrictivefactorsforthegrowthandpropagationofhydrophyta,thereforethekeytothepreventionandcontrolofeutrophicationinlakesliesinthecontrolofthecontentsofthetwoelementsinthewater.Artificialfishingofalgaecanreducetheconcentrationsoftrophicsubstancessuchasnitrogenandphosphorusinthewaterbodies,andbiologicalmeasuresmaydecreasethecontentsofthesetrophicsubstancesinthebottomsedimentsandthewaterbodies,therebyplayinganactiveroleinmodifyingtheeutrophicationofthelake.

  • 标签: Dongping LAKE hydrobios EUTROPHICATION BIOLOGICAL evaluation
  • 简介:常规洪水操作规定的应用程序在南部的中国由于对Pubugou水库的洪水控制规则的不够的描述被限制。基于不同洪水控制对象的要求,这份报纸建议由响应洪水流入预报和水库水水平定义洪水控制规则的不同参数与惩罚机制优化洪水控制规则。一个基因算法为解决参数优化问题被采用。下游地不够的洪水控制能力的失败风险和溢出体积通过水库操作政策被估计。结果证明一条优化规定能比当前的洪水控制规则提供更好的性能。

  • 标签: 水库防洪调度 洪水调度 风险评价 调度规则 优化问题 控制规则
  • 简介:ThereareplentyofSinianandCambrianpotentialshalegasresourcesinSouthChina,whichischaracterizedbyhighthermalevolutiondegrees,poordrillingperformancesandonlyoccursinlocalareas.Takingtheprinciple“hightofindlow”isthekeyissuetoachievingabreakthroughinoldershale.ChinaGeologicalSurveydrilledintheperipheryoftheProterozoicbasement,i.e.theHuanglinganticline,inthewesternHubei,andHannanpaleocontinentinthesouthernShanxi.Itreceivedhigh-qualitygas-bearingshalewithrelativelylowRointheinLowerCambrianNiutitangformationandSinianDoushantuoformation.BasedongeologicalconditionsofshalegasreservoirsintheHuanglinganticline,thispaperputsforwardthenewmodelnamed“Controloverreservoirsbyperipheryofbasement”aboutshalegasaccumulation,suggestingthattheshaledepositedinadeepwatercontinentalshelfintheperipheryofthebasementischaracterizedbyshallowburial,ashortburialtime,stabletectonics,relativelylowthermalevolutiondegrees,andshalegasreservoirsinagoodcondition.TheshaleoftheSinian-CambrianstratadepositedindeepwatercontinentalshelvesintheperipheryofChuanzhongpaleo-upliftinSichuan,HannanpaleocontinentinthesouthernShanxi,HuanglinganticlineinwesternHubeiandJiangnang-Xuefengpaleo-upliftinHunanandGuizhouprovincehavegoodshalegasexplorationpotential.

  • 标签: Huangling UPLIFT EVOLUTION SHALE gas CONTROL
  • 简介:摘要:在北Qaidam盆的侏罗记煤措施的分发被地区性的结构显然控制。基于煤田探索的存在数据并且与煤田地下室结构,主要差错的特征,和煤措施的分发的分析结合了,这份报纸向前在北Qaidam盆带给煤田的一个计划构造师的单位和控制煤的结构的式样的定义。煤措施的分发的结构控制进一步被讨论。煤的分发从东方从北方测量进带状配列的特征到南方和块到西方的后来,Indosinian导致了的地区性的构造活动的几个阶段。结果显示结构的变丑在三的前面是最强烈的高举系上带子,它被戳的联合描绘。煤措施被高举到浅形成,并且对容易被利用,但是因为严重损坏,矿的规模是小的。相反,压力和紧张在三消沉是弱的,与主要是的控制煤的结构的式样戳褶层和戳单斜层联合。在消沉的煤的分发是相对稳定的。消沉的更浅的部分将在北Qaidam盆为煤资源的探索和开发成为关键区域。

  • 标签: 煤矿 地区分布 地质构造 中国
  • 简介:ThereisahugeandimportantmeridinntectoniczonelnHebci-Shandong-AnhuiProvinces(castcrnNorthChina),especlallytbcoldstructuresfromnorthtosouth.Becauseitsmainpartishiddenunder-neath,andtheoutcroppingsweredisplacedandreformed.thetectoniczonecannotbenoticedforalongtime,andthemineraltalngprocessinthi8tectoni

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  • 简介:TheJunggarorogen,Xinjiang,China,isanimportantpartoftheUral-Mongolianorogen.ThecollisionalorogenesisinthisregionoccurredprimarilyintheCarboniferousandPermianwithanevolutionalprocessofearlycompressionandlateextension.MineralizationofgoldandothermetalsintheJunggarorogenoccurredmainlyinthePermianandinafewcasesintheLateCarboniferous.Thedepositsarelargelydistributedinareaswherecollisionalorogenesiswasintensiveandformedinatransitionalstagefromcompressiontoextension.Therefore,goldmineralizationintheJunggarorogenisfullyconsistentwiththecollisionalorogenesisintime,spaceandgeodynamicsetting.ThisindicatesthatthemineraldepositmodelofcollisionalorogenesisisapplicabletoprospectingandstudyoforedepositsintheJunggarorogen.Furthermore,thefactualdistributionofgoldandotherdepositsinthisregionisjustthesameasthecollisionalorogenicmodelpresents.

  • 标签: JUNGGAR OROGEN collisional orogenesis intracontinental subduction
  • 简介:Tancheng-LujiangFaultSystem:ItsCharactersandControlonOil-GasDistributioninEasternChinaChenQuanmao;LiangXiaodong;ZhangGuangya;...

  • 标签: STRIKE-SLIP FAULT sinistral translation DEXTROSE STRIKE-SLIP
  • 简介:TheKashmirearthquake2005(magnitudeMW7.6)triggeredthousandsofmassmove-mentsinnorthernPakistan.Thesemassmovementsweremainlyrockfalls,debrisfalls,rockslidesandrockavalanches.Themassmovementsvaryinsizefromafewhundredcubicmetersuptoabout100millioncubicmetersestimatedfortheHattianBalarockavalanche,thebiggestoneassociatedwiththisearthquake.Thismassmovement,whichmovedinsoutheasterndirection,createdtwonaturaldamsonthevalleybottomandblockedthewaterwaysoftheKarliandTungtributariesoftheJhelumRiver.Topographic,lithologicandstructuralinformationwereusedtoinvestigatetheHattianBalarockava-lanche.GeotechnicalandstructuralmapswerepreparedtounderstandrelationshipbetweengeologyandstructureofHattianBalarockavalanche.Thegeometryandfailuremodeofthisrockavalanchearecontrolledbysoutheastplungingsynclinalstructures,lithology,abeddingparallelslipsurfaceandapre-existingoldrockslide.ThestructuralmapshowsthatthemassmovementfailurewasduetoDannaandDandbehsynclinalstructuresplungingsoutheastonthehangingwallblockofthereacti-vatedMuzaffarabadfault.Theslipsurfaceofthemassmovementfollowedthebeddingplanesalongmudstone,claystoneandsandstonesurfaces.Themassmovementperfectlyfollowedthepre-existingsynclinalmorphologyoftheDannaandDandbehsynclines.

  • 标签: 结构控制 克什米尔 巴基斯坦 喜马拉雅山 雪崩 岩石