共查询到20条相似文献,搜索用时 656 毫秒
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淮河流域是我国经济欠发达、生态环境较脆弱的区域,在我国生态环境演变中具有典型意义。淮河是新中国第一条进行系统治理的河流,也是第一条从立法层面进行污染综合治理和生态经济带建设的河流。新中国对淮河的治理,从提出“蓄泄兼筹”的治淮方针到贯彻“节水优先、空间均衡、系统治理、两手发力”的新时代治水思路,从关注行蓄洪区群众生产生活到脱贫攻坚,从治理污染到建设淮河生态经济带,对治理的规律性认识不断深化,治理方略不断演进,为探索河流治理、流域生态经济带建设、推动人与自然和谐发展等积累了宝贵经验,留下了深刻的历史启示。 相似文献
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阜南县位于安徽省西北部,淮河北岸,邻河南省,古代为“淮夷”活动区,历史遗存较多,如“汉原鹿县故城遗址”等。由于阜南处于洪河、润河、淮河等河流的汇流区域,地势低洼,自古以来就成为行洪区,河流经常改道,一些古墓葬、古遗址经常被冲刷出来。阜南历年来出土的文物众多,据不全的资料记载有:1.石器,在解放后贺胜台、万沟遗址、城关阜西村出土的新石器时期的石斧、石锛、石刀、石 相似文献
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清淮是地名,常见于唐诗宋词。清淮在哪儿?淮指淮河,发源于河南桐柏山,别称长淮、淮水。清淮,那么清雅,顾名思义,就是清清的淮河及淮河地区了。六朝时何逊“露湿寒塘草,月映清淮流”(《与胡兴安夜别》),是千古佳句,写的是淮河。但是,由于政治经济环境的变化,古代诗中“清淮”有相当一部分并不是仅指“清清的淮河”,而是指“运河一段或其他的”,这里略作考辨。 相似文献
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1931·江淮洪波劫 总被引:1,自引:0,他引:1
1931年,长江、淮河发生了全流域的特大洪水,为数百年间所罕见。洪涛肆虐,许多沿江滨河城镇陆沉,大片农田化作汪洋,成千上万人遭灭顶之灾,成百万灾民流离失所。江淮洪水何处来当年,长江、淮河流域发生了长历时、大强度的暴雨,梅雨大雨带长期停滞在江淮流域,月降水量比平均值偏多400毫米以上,约为往年的三四倍,形成了全流域性特大洪水。本来,作为面积辽阔的长江流域来说,在正常气候情况下,随着雨带的推移,各地暴雨发生有先有后,汛期的开始和结束也有早有迟,使得各支流洪水能顺序泻人干流而不致于造成大的洪灾。但当年的降雨… 相似文献
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试论春秋时期淮河流域之交通 总被引:2,自引:0,他引:2
春秋时期,淮河流域由于经济发展的加速,又由于地处晋、楚、吴、齐大国之间,各大国之间的交流、交往、战争.促使流域交通迅速发展。淮河干支流多已成为水上通途;“沟通陈蔡”及邗沟等人工运河的开凿,反映了其水运交通质的进步。诸如芍陂等水利工程,也为当地人民发展水运提供了便利。一些霸主还通过制定水利盟约,力图保证各国间水运的畅通。当时,各国问都有可通行车马的道路相连,新郑、陈、楚丘、徐等已成为地区间的交通枢纽,诸侯间的盟会也常于此流域召开。邮驿制度也通达于该流域。交通工具进步很快,道路管理制度亦得到各国的重视。交通的发展,对于流域政治、经济、军事的发展都起到了较大的促进作用。 相似文献
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在太平天国起义时期,安徽省的淮河流域,形成了一个很大的地方势力,其头目就是皖北练总苗沛霖。他曾经被清朝政府任命为四川省川北道员;又曾被太平天国加封为“殿前北方电察天军顶天扶朝纲奏王”。他曾经大动干戈,武力攻陷清政府安徽巡抚驻节之寿州,使清政府的封疆大臣翁同书作了事实上的俘虏;又曾以阴谋诡计,诱擒了太 相似文献
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吕良波 《文物保护与考古科学》2010,22(3):76-80
为了对一件六朝初期的铜鎏金铺首衔环进行保护,运用X光透视、扫描电镜、红外光谱等仪器对其鎏金层和腐蚀产物进行了分析。通过扫描电镜能谱分析得知鎏金层含有较高的金元素并有部分的汞元素,由于汞元素的存在,进一步验证了其为鎏金器。根据浅绿色锈蚀样品的红外光谱分析,浅绿色锈蚀是有害锈氯铜矿(Cu2(OH)3Cl),必须对其进行除氯处理。而覆盖鎏金层的绿色锈蚀在扫描电镜能谱分析中所示氯离子含量并不明显,并根据红外光谱的分析确认其为无害锈孔雀石(Cu(OH)2.CuCO3),但其影响了铺首鎏金层艺术欣赏价值,需采取措施将其清理,对位于铺首背面的则给予保留。保护修复过程中,尝试了先用去离子水浸渍填充鎏金文物毛细管后,再用强酸性离子交换树脂快速处理覆盖鎏金层的绿色锈蚀,达到了预期效果。实践证明该方法可以有效地把铺首左面鎏金层清理出来。 相似文献
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卢燕玲 《文物保护与考古科学》2023,35(1):80-89
深圳博物馆藏郑公大墓出土蟠螭纹铜鼎入馆前已进行过保护修复处理,但保护修复记录资料缺失。现因年代久远,原保护修复材料老化和保存环境等因素的影响,又出现左右两足从原焊接处断裂、脱落,以及多处裂隙等病害,亟待再次保护修复处理,以恢复器物的完整性和稳定性,并提升展示效果。本工作利用X射线探伤、X射线荧光光谱、红外光谱和X射线衍射等分析方法,对该铜鼎的材质组成、制作工艺、早期修复材料、处理方法,以及病害情况等进行了综合分析。结果表明,该铜鼎本体材质为铜、锡、铅三元合金;器身遍布补配、焊接修复和随色作旧痕迹,且分布有多条裂隙。补配材料为黄铜片(口沿局部白色补配材料为混杂有钾明矾的石膏,且已酥粉);焊接材料为铅锡料;未发现氯元素。研究结果对进一步认知该文物的价值、科学评估其保存现状和病害程度,以及对其实施科学有效的再保护修复提供了参考。 相似文献
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楼淑琦 《文物保护与考古科学》2010,22(3):55-60
荆州谢家桥一号汉墓出土了四床质地各异、造型独特、纹饰华丽、做工精细的棺罩(荒帷),为全国首次发现,为研究我国西汉初期的服饰、丝织品制造技术和手工业水平提供了极其珍贵的实物资料。但由于荒帷长期在地下环境中受各种因素的侵蚀,已破损老化严重、碰触易碎,为此必需进行修复。本工作通过对其中一件荒帷的外观目测观察,显微镜对纤维结构的检测以及病害分析后,决定以针线法分别对锦面、锦缘进行修复,然后拼合成形。由于文物平摊面积比较大,因此采用分区修复的方式逐块进行修复。修复后的荒帷在广州南越王博物馆展出,为广大观众提供了难得一见的精美展品。此方法可为国内类似出土丝织品(丝、绢、锦)文物的修复提供借鉴。 相似文献
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《Conservation and Management of Archaeological Sites》2013,15(3):136-153
AbstractThe methods employed for selecting the repair material for the Buddhist temple II of Krasnaya Rechka, a site located in the upper Chuy Valley, Kyrgyzstan, are described in this article. The temple is built of mud brick and was excavated during several campaigns between 1938 and 1998 with no provision being made for conservation. The first emergency protective measures were initiated in 2003 during a UNESCO project that included other sites located in the Chuy valley. Most of the eroded walls of the temple were given a temporary shelter coat of mud bricks, a method that has proved effective. The main problem after proving the shelter coat was how to assess the repair material for future conservation work (it is planned to repeat the application of the shelter coat, but with materials with improved performance). Assessment was carried out after extensive laboratory analysis of both historic and repair materials, but also after test wall construction and monitoring. The methods explained here could be of use to conservators working in similar projects in the Middle East or Asia. 相似文献
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联总援助与我国铁路交通善后 总被引:1,自引:0,他引:1
抗战期间及战后初期,我国内陆交通遭到严重破坏。根据《中国善后救济计划》,联合国救济善后总署(简称联总)无偿提供大批交通运输器材,帮助我国恢复残破不堪的水陆交通。出于控制华北的政治目的,国民党政府曾打算利用联总援 助的铁路器材优先修复津浦、平汉、平绥和胶济铁路;停战协定生效后,中共曾表示,在保留解放区境内铁路区段实际控制权的前提下,愿意协助修复华北铁路交通。由于国民党政府顽固坚持以武力解决国内政治争端的错误政策,致使全国内战爆发,铁路再度成为交战双方争夺的焦点而频遭破坏。交通部不得不改变初衷,转而将联总器材主要用于修复粤汉、浙赣、南洵铁路和改善华东地区的路况,并收到显著成效。 相似文献
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Superelastic Shape Memory Alloys (SE SMAs) are unique alloys that have the ability to undergo large deformations and return to their undeformed shape by removal of stresses. This study aims at assessing the seismic behavior of beam-column joints reinforced with SE SMAs. Two large-scale beam-column joints were tested under reversed cyclic loading. While the first joint was reinforced with regular steel rebars, SE SMA rebars were used in the second one. Both joints were selected from a Reinforced Concrete (RC) building located in the high seismic region of western Canada and designed and detailed according to current Canadian standards. The behavior of the two specimens under reversed cyclic loading, including their drifts, rotations, and ability to dissipate energy, were compared. The results showed that the SMA-reinforced beam-column joint specimen was able to recover most of its post-yield deformation. Thus, it would require a minimum amount of repair even after a strong earthquake. 相似文献
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《Journal of Medieval History》2012,38(3):177-184
Although the authors of recent literature on the Patarine movement in Milan (1057-75) have very different intellectual backgrounds, they all try to study and interpret the movement in its complete historical context, and they point to the circumstances or special combination of circumstances which caused the movement to fail. Its failure was due in part to its relationship to the social structure. In this article we first show why this relationship needs to be re-examined and then go on to investigate how the place of the movement in the social structure contributed to its failure and dramatic collapse. 相似文献
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吉林省龙头山古墓群渤海国王室墓地出土的银平脱梯形漆盒是唐代银平脱工艺中一件制作精美的珍品.该漆盒出土时已被挤压变形,漆皮及木胎残损,金属构件及银饰腐蚀风化严重.为保护此漆盒,采用脱水保护及修复处理恢复厂它的原貌.对这件器物中变形漆木构件进行慢脱水整形保护,以及对木胎朽蚀构件采用制胎、粘帖、补配、做旧等方法,使之取得好结果. 相似文献
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Henry Teunis 《Journal of Medieval History》1979,5(3):177-184
Although the authors of recent literature on the Patarine movement in Milan (1057-75) have very different intellectual backgrounds, they all try to study and interpret the movement in its complete historical context, and they point to the circumstances or special combination of circumstances which caused the movement to fail. Its failure was due in part to its relationship to the social structure. In this article we first show why this relationship needs to be re-examined and then go on to investigate how the place of the movement in the social structure contributed to its failure and dramatic collapse. 相似文献
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