共查询到20条相似文献,搜索用时 78 毫秒
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武钢三烧I系列烧结主厂房为装配式结构,经改造加固形成框架结构和装配式结构共存的复杂结构.由于生产需要,必须从主厂房爆破切割分离43m高的高架通廊,同时需确保贯穿厂房的地下和地表运料通廊及周边厂房的安全.因此,应先采用切割爆破技术,将需保留的高架通廊分离,并把厂房分割成3个区,然后分别采用定向倒塌和拆叠爆破拆除方法,使爆破达到了预期效果,并可供类似工程参考. 相似文献
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以实例介绍了砖混结构楼房的控制爆破拆除技术,对楼房拆除爆破的坍塌方式、爆破参数及安全技术进行了分析和探讨。 相似文献
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在三峡工程二期下游围堰拆除爆破中,其难点问题为混凝土防渗墙的一次性爆破拆除成功。由于混凝土防渗墙内有预埋的灌浆钢管及固定钢管的保持架,这种结构在以往的围堰水下防渗墙爆破拆除工程中是没有先例的。如果混凝土防渗墙爆破拆除仅仅只将混凝土爆碎,而钢管不炸断、保持架不松散则会使爆渣的水下开挖无法进行,因此将混凝土预埋灌浆钢管炸断及保持架炸散是关系到二期下游围堰拆除爆破成败的关键问题。针对这一问题,利用ANSYS/LS-DYNA计算软件和现场试验,研究了不同装药结构、药包直径等因素对钢管爆炸破坏效果的影响,讨论了钢管爆炸炸断破坏形态与装药结构之间的关系,在此基础上确定钢管爆炸炸断破坏的合理爆破参数及装药结构形式。二期围堰爆破拆除结果表明研究成果是可靠的。 相似文献
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粤西某水泥厂拟对该厂两条生产线进行整体爆破拆除。由于环境复杂,爆破规模大,施工难度很大,特别是双排水泥窑的高宽比小,采取常规底部立柱爆破切口难以使水泥窑顺利倾倒。通过选取合理的爆破参数,并以充分的预拆除配合,采取合理的爆破网路,安全、快速地完成了该水泥厂整体爆破拆除。同时,采取了一系列爆破危害综合控制措施,确保了爆破安全和环保作业。 相似文献
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Muriel Rocher Stéphane Baize Stéphane Jaillet Edward Marc Cushing Yannick Lozach Francis Lemeille 《Comptes Rendus Geoscience》2003,335(8):701-708
Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ1 roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003). 相似文献
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正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level 相似文献
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正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7), 相似文献
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正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci- 相似文献
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正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli- 相似文献
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正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.) 相似文献
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正20142002 Wei Hualing(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China);Zhou Guohua Element Content and Mineral Compositions in Different Sizes of Soil in Tongling Area,Anhui Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(11),2013,p.1861 相似文献
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正20141768 An Shaopeng(Institute of Rock and Soil Mechannics,Chinese Academy of Sciences,Wuhan 430071,China);Wei Lide Experimental Study on Mechanical Behavior of Xigeda Formation Siltstone and Structure Interface(Journal of Engineering Geology,ISSN1004-9665,CN11-3249/P,21(5),2013,p.702-708,9illus.,1 table,16 refs.) 相似文献
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正20140985Chen Liang(Post-Doctoral Research Station of Mining Engineering,School of Nuclear Resources and Nuclear Fuel Engineering,University of South China,Heng-yang 421001,China);Huang Wei Composition of Major and Correlated Elements with Organic Matters and Paleoclimatic Implication for Lower Paleogene Sediments in Sanshui Basin 相似文献