共查询到20条相似文献，搜索用时 62 毫秒
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近年来,随着地热资源利用规模的不断提高,郓城县岩溶热储水位呈逐年下降趋势,并产生了热污染等地质环境问题。为查明郓城县岩溶热储回灌能力,保障地热资源可持续开发利用,开展了同层对井回灌试验和示踪试验,并对水质、水温、水位进行了监测。结果表明,回灌对热储层的水位、水质、水温影响小,岩溶热储层内水力联系强,热水运移速度为10.46 m/h,回灌水水温对热储层最大自然回灌量影响较大,当开采量小于130 m~3/h时,回灌率可达100%,回灌条件适宜。 相似文献
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如何实现地热资源合理开发、高效利用,实现地热资源采灌均衡可持续开发利用模式已成为地热资源开发利用地区重点研究内容。该文根据庆云县某典型小区(以下简称小区A)一个采暖季的开采、回灌监测数据,总结了水温、开采量、回灌量、水位及回灌率变化情况。通过数据分析及调查可知,庆云县回灌工程普遍存在地热尾水温度偏高、热利用效率偏低、地热尾水直接回灌引起管道腐蚀影响供暖效果等问题。针对地板辐射和暖气片采暖两种模式提出了换热技术和增加热泵机组的改进措施建议,既可提高热利用效率,又可保证供暖效果避免设备腐蚀,对庆云县地热供暖工程的升级改造具有一定的指导意义。 相似文献
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鉴于菏泽市目前地热资源开发利用现状,随着地热井数量的增多,地热水开采量逐年增大,导致地热水水位呈逐年下降的趋势,为了保护这一绿色清洁能源,缓解地热资源过度开发造成的地热水水位持续下降、尾水外排污染水、土体等一系列负面影响,有必要采取地热尾水回灌措施,来保证地热资源的可持续发展。采用地球物理勘探,地热井钻探、单孔及对孔抽水试验、回灌试验及水质测试等方法,分析了回灌对水位、水温的影响,分析结果认为回灌对水温、水质影响不大。在回灌量相同的条件下,回灌尾水水温越低,回灌的升幅越小,回灌越容易。经综合分析认为,菏泽市城区奥陶系回灌效果良好,回灌潜力巨大,在菏泽市奥陶系热储中进行回灌是可行的。 相似文献
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鲁北砂岩热储地热尾水回灌试验研究 总被引：1，自引：0，他引：1
山东省鲁北平原蕴藏有丰富的地热资源,目前得到广泛开发利用的热储为新近纪馆陶组热储与古近纪东营组热储,热储类型为沉积盆地型碎屑岩孔隙—裂隙热储,天然状态下,该类热储中的地热流体基本上处于静止状态,补给极其微弱,地热流体的大量开采造成了热储压力的急剧下降,回灌成为了维持热储压力的必要措施。针对该类热储,国内外进行了大量的回灌试验研究,总体回灌效果不佳,并将原因归结于回灌时热储的堵塞。该文在分析研究区内多次回灌试验成果的基础上,提出了砂岩热储回灌的不同机理,认为合理地布置开采井与回灌井之间的距离,促使开采井与回灌井之间形成水力循环,是解决砂岩热储中回灌难问题的关键。 相似文献
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为解决地热水开采利用过程中造成诸如水位下降、热流体排放引起的热污染和化学污染等问题,通过开展地热尾水回灌试验研究,认为在开采深层的地下热水资源的同时,必须进行人工的回灌补源,山东省通过在德州、东营、济南等地开展地热尾水回灌试验工作,效果显著。 相似文献
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为准确掌握地下水的水位、水质、水量及水温的动态变化及地下水运移规律,监测、监督、防止地下水的过量开采与污染,自2005年以来,焦作市国土资源局在区内开展了环境水文地质监测工作。作为一项新的职能,焦作市国土资源部门克服无专业机构、无专业技术人员、无监测设备等困难,从零做起,腾出专门办公场所,配置办公设备和监测设备,抽调专业技术人员,从水位、水质监测入手,逐步全面开展了各项工作。目前,该局已在市城区范围内布设长观点11个,其中国家级5个、一般级6个;建立水质监测点2个,布设统测点41个,监测控制面积达415平方公里,形成了比较完… 相似文献
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Based on the hydrographic data in austral summer during the 22nd Antarctic Expedition of China(2005/2006),some features can be found about the northern margin of Emery ice shelf as follows.The heat content in the surface layer(0-50 m) at the eastern end and the western end of the ice-shelf margin is much higher than that at the middle.The upper mixing-layer depth and the seasonal thermocline depth at the middle of the ice-shelf northern margin are much shallower than those at the both ends.However there is much less difference between the middle and the ends in the bottom layer.The remote sensing photos show that the inhomogeneity in the surface-layer water is closely related to the spatial distribution of the floes and polynia in the area. 相似文献
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Phylogenetic analysis based on 16S rDNA of 8 strains of cultivable bacteria isolated from Arctic sea-ice was studied.The results showed that strain BJ1 belonged to genus Planococcus,which was a genus of low mole percent G C gram-positive bacteria;strain BJ6 belonged to genus Burkholderia of β-proteobacteria and the rest 6 strain all belonged to γ-proteobacteria,of which strain BJ8 was a species of Pseudoalteromonas,strain BJ2-BJ5 and BJ7 were members of genus Psychrobacter.Phylogenetic analysis also indicated that bacteria of genus Psychrobacter of the isolates formed a relatively independent phylogenetic cluster in comparison with other bacteria belonged to genus Psychrobacter. 相似文献
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正Rapid changes of Arctic sea ice cover have been in the focus of the international climate research community in recent years.Quite a few of nations have completed a large number of related surveys and research projects in the Arctic Ocean.Up to now,China has performed six research cruises to the Arctic Ocean resulting in a significant volume of research output.Improved knowledge on the atmospheree-sea ice-ocean interactions in the Arctic is a 相似文献
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The GRV 024516 and GRV 024517 meteorite samples collected from Grove Montains,Antactica are ureilite and H5 ordinary chondrite,respectively.Based on the study of mineralogy-petrology,the cosmic-ray exposure ages and gas retention ages of these two meteorites were determinated and calculated.Their cosmic-ray exposure ages are 33.3 Ma,51.7 Ma,and gas retention ages are 1936.8 Ma and 3720 Ma,respectively.The ureilite contains diamond,graphite and amorphous C,which are mainly carrier of noble gases indicating obviously shock metamorphism effects,which induced 40Ar partial loss.The H5 chondrite indicates thermal metamorphism of parent body,its gas retention age fall the range between 3220 Ma and 4510 Ma of the least shocked H5 chondrites 相似文献
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《极地研究(英文版)》2014,(3)
正1 Aims and Scope Advances in Polar Science(APS)is an international,peer-reviewed journal jointly sponsored by the Polar Research Institute of China and the Chinese Arctic and Antarctic Administration.APS is a comprchensive academic journal dedicated to presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research.Its primary purpose is to publish achievements in fundamental research,applied 相似文献
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《山地科学学报》2014,(4):I0004-I0009
<正>AIMS AND SCOPE(Editorial Policy)The Journal of Mountain Science(JMS)is devoted to mountains and their surrounding lowlands-ecoregions of particular global importance,with a particular emphasis on the important highlands/mountains in the world,such as the Tibetan Plateau,the Himalayas,the Alps,the Andes,the Rockies and many other mountain ranges of our planet. 相似文献
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《山地科学学报》2014,(4)
<正>The Journal of Mountain Science(JMS),founded in2004,is an international English-language journal on mountain sciences.JMS is supervised by the Chinese Academy of Sciences(CAS),sponsored by the Chengdu Institute of Mountain Hazards and Environment,CAS,published by Science Press China,and distributed by Springer exclusively throughout the world(excluding Mainland China).The JMS is published bimonthly,fulltexted in SpringerLink and CNKI,indexed/abstracted by 相似文献