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7 个结果
  • 简介:Geothermalenergyisapreciousresource,whichiswidelydistributed,varied,andabundant.Chinahasenteredaperiodofrapiddevelopmentofgeothermalenergysince2010.Asshallowgeothermalenergypromoting,thedepthofhydrothermalgeothermalexplorationisincreasing.ThequalityofHotDryRock(HDR)andrelatedexploratorytechnologiesarebetterdevelopedandutilized.Onthebasisofgeothermaldevelopment,thispaperreviewsthegeothermalprogressduringthe"12thFive-YearPlan",andsummarizestheachievementsofhydrothermalgeothermalandhotdryrocksfromgeothermalsurveyandevaluationaspects.Finally,theauthorspredictthedevelopmenttrendofthefuturegeothermalresearchtobenefitgeothermalandhotdryrockresearch.

  • 标签: GEOTHERMAL Hot DRY ROCK (HDR) Thermal
  • 简介:WesternChinaexperiencedanextremehotsummerin2015,breakinganumberoftemperaturerecords.Thesummermeansurfaceairtemperature(SAT)anomalywastwicetheinterannualvariability.Thehottestdaytimetemperature(TXx)andwarmestnight-timetemperature(TNx)werethehighestinChinasince1964.Thisextremehotsummeroccurredinthecontextofsteadilyincreasingtemperaturesinrecentdecades.Wecarriedoutasetofexperimentstoevaluatetheextenttowhichthechangesinseasurfacetemperature(SST)/seaiceextent(SIE)andanthropogenicforcingdrovetheseverityoftheextremesummerof2015inwesternChina.Ourresultsindicatethatabout65%-72%oftheobservedchangesintheseasonalmeanSATandthedailymaximum(Tmax)anddailyminimum(Tmin)temperaturesoverwesternChinaresultedfromchangesinboundaryforcings,includingtheSST/SIEandanthropogenicforcing.Fortherelativeroleofindividualforcing,thedirectimpactofchangesinanthropogenicforcingexplainabout42%oftheSATwarmingand60%(40%)oftheincreaseinTNxandTmin(TXxandTmax)inthemodelresponse.ThechangesinSST/SIEcontributedtotheremainingsurfacewarmingandtheincreaseinhotextremes,whicharemainlytheresultofchangesintheSSToverthePacificOcean,whereasuperElNi?oeventoccurred.OurstudyindicatesaprominentroleforthedirectimpactofanthropogenicforcingintheseverityoftheextremehotsummerinwesternChinain2015,althoughthechangesinSST/SIE,aswellastheinternalvariabilityoftheatmosphere,alsomadeacontribution.

  • 标签: SEVERITY of temperature EXTREMES summer 2015
  • 简介:Gullysystemsandwatershedsaregeomorphicunitswithclearboundariesthatarerelativelyindependentofbasinlandscapesandplayanimportantroleinnaturalgeography.InordertoexplorethemorphologicalcharacteristicsofgullysystemsandwatershedsintheDry-HotValley[SouthWest(SW)China],gulliesareinterpretedfromonlineGoogleimageswithhighresolutionandwatershedsareextractedfromdigitalelevationmodelatascaleof1:50,000.Theresultsshowthat:(1)Thereare17,382gullies(withatotalareaof1141.66km^2)and42watershedsinthestudyarea.(2)Theaveragegullydensityofthestudyarea(D)is4.29km/km^2,gullyfrequency(F)is14.39gullies/km^2,thebranchingratio(B)is5.13,thelengthratio(L)is3.12,andthecoefficientofthemainandtributarygullies(M)is0,06.Thedegreeofgullyerosionisstrongtoextremelystrong,themaindevelopmentintensityofgullyerosionrangesfromintensetomoderate,andthetypeofgullysystemistributary.(3)Thewatershedareas(A)arebetween0.39and96.43km^2,thereliefratio(R)isfrom0.10to0.19,thecircularityratio(C)isfrom0.30to0.83,thetextureratio(T)isfrom0.82to39.35,andthedominantgeomorphologicaltexturetypeisfine.(4)ThereisaquantitativerelationshipbetweenFandD:F=0.624D2(R=0.84)andTiscloselyrelatedtoD,F,M(R2>0.7).A,RandCarerelatedtoM(R2>0.5).Thedevelopmentofgullysystemsistheresultofcouplingeffectsbetweenmultiplefactors.Inthisarea,thedegreeoferosionandtheconditionofthemainandtributarygulliescanbecontrolledbythedegreeoftopographicbreakageinthewatershed,whichprovidessometheoreticalbasisfortheevaluationofgullyerosionbythelatter.Inaddition,thescale,relief,andshapehaveasignificantimpactonthelocationsofthemainandtributarygullies.Fortributarygullies,attentionshouldbepaidtotheinterceptionandcontrolofrunoffandsedimentinthesmallconfluencebranchesinordertopreventgullyexpansionandheadadvance.Thesefeaturescaninformthedevelopmentoftargetedmea

  • 标签: MORPHOLOGICAL characteristics Quantitative RELATIONSHIPS GULLY system
  • 简介:摘要:将先进的交通管理 HOT模式与高度城镇化地区城市道路改扩建结合一并实施,是探索交通改善与城市发展、用地协调的着力点之一。以深汕第二高速深圳段的 HOT改扩建方案为例,通过研究城市道路改扩建中桥梁、隧道扩容方案,从交通功能、工程实施难易程度、技术经济指标等多方面比选,得出扩容方案的适用情况,为类似项目提供借鉴和参考。

  • 标签: HOT,城市道路改扩建,方案设计实例
  • 简介:喝水类型斑釉是在有患者的最大的数字的中国的最有害的地方性的疾病。尽管政策的实现有效地控制了这种地方性的疾病的传播改变水来源降低氟化物水平,因为,它的流行不能彻底地被停止地方性地,diseased区域能仍然损害的在这些的高氟化物的环境背景通过食物链的人的健康。因此,在喝的水类型斑釉上进行更深去的研究是必要的。为了调查高氟的符号的效果,在在他们的根附近的热春天类型斑釉疾病区域,本地水,水稻土,米饭,整个蔬菜和土壤的庄稼和人的健康上的环境背景为分析被取样。结果与在在自然背景并且在社会背景类似于斑釉疾病区域的没有斑釉的区域的控制组的那些相比。大米和蔬菜能在土壤或在灌溉水积累水溶性的氟的符号任何一个,这被显示,并且不同庄稼有修理氟的符号的不同能力。在在斑釉疾病和没有斑釉的区域的蔬菜的不同部分的氟的符号的内容统计上被分类。结果证明在斑釉疾病区域的蔬菜的根,澡盆ers,叶子和花的氟的符号内容分别地是3.56,1.17,3.07和3.23mg/kg。然而,比较证明在没有斑釉的区域,氟的符号内容分别地是2.17,0.70,1.91和2.52mg/kg。而且,庄稼的不同部分也显示出显著地不同的氟的符号固定能力。强烈新陈代谢的部分的氟的符号内容相对高,这被表明。例如,蔬菜的根,叶子和花的氟的符号内容比茎的那些高得多。种子的氟的符号固定能力是很弱的。以便把人的身体的暴露的风险归结为氟化物,到改正氟的符号的庄稼的能力上的温泉水的影响应该被减少像一样可能。阻止庄稼与温泉水被灌溉作为在被温泉水严重地影响的区域的主要可食的部分是很重要的,与相对低的能力种庄稼充实氟的符号是明智的,例如有种子或澡盆ers的那些。

  • 标签: 含氟水 土壤 氟中毒 地下水
  • 简介:在从Libixia节的Jialingjiang形成的破裂的大多数静脉mineralsdeposited,Hechan区域包括大量僵绳白云石和伴随的天青石,方解石和荧石。这研究分析了性质,来源,由飞机光岩相学的液体的进化,液体包括方法,阴极射线发光图象,和稳定的同位素的作文。在白云石的二阶段的水的液体包括的homogenization温度在100和270°C之间变化。与δ18O数据,为破裂屑的降水负责的液体有δ18在10‰之间的O值并且18‰(相对降雪)。僵绳白云石和伴随的矿物质是在提高的温度的稠密的盐水的活动的结果。而且,液体从导出水兵的盐水的混合物被导出并且更深传播的分析表演流动。这液体在成岩作用期间在Sr被充实并且在骨折并且为地区性的矿化作用形成了天青石。僵绳白云石的溶解被归因于冷却Mg/Ca-decreased液体,它可以联系到一在包围碳酸盐石膏沥滤到天青石。

  • 标签: 嘉陵江组 轴承断裂 白云石 热卤水 充填物 活动记录