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燃气锅炉房的安全管理 总被引：1，自引：0，他引：1
燃气锅炉因具有自动化程度高、劳动强度低、使用清洁燃料、环保效果好等特点，得到广泛的推广使用。但是，燃气锅炉若使用或管理不当，其负面影响范围和严重程度将远远大于燃煤锅炉。本文根据国家法规和规程，结合工作体会，对如何正确使用和安全管理燃气锅炉等问题，提出解决的办法。 相似文献
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近年来,海域使用论证制度日趋完善,海域使用论证管理呈现不断加强和逐步规范的良好局面。海域使用论证作为科学用海、管海的重要技术依据,在海洋管理工作中具有极其重要的地位和作用。鉴于此,笔者针对海域使用论证管理的现状及存在的问题,探讨强化海域使用论证管理的措施,以兹交流。 相似文献
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湖南省土地管理事业经历了从无到有、日趋科学完善的发展过程，目前，全省土地使用制度基本实现了两个转变，但依然存在着土地资产国有意识不浓、观念转变不彻底、有偿使用率偏低、竞争机制不完善、利用结构不合理、土地使用效率低等诸多问题。为此，应采取根据地理环境特点划分土地利用功能区、合理配置土地、加大土地有偿使用力度、建立灵活多样的耕地保障体系等举措，为工业化提供经济支持，积极稳妥地推进工业化进程。 相似文献
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人类为获取食物和满足其他需求而使用牙齿从事的各类非咀嚼性活动在牙齿表面形成使用痕迹。牙齿使用痕迹与古人类的行为特征关系密切,记录了丰富的古人类生存环境、食物构成、获取食物的方式、行为模式及生活习俗等方面的信息。对黄龙洞更新世晚期人类牙齿的观察发现:黄龙洞人类前部牙齿表面具有釉质破损与崩裂、齿冠唇面破损、齿间邻接面沟3种类型的使用痕迹。根据这些牙齿使用痕迹的分布和表现特点,推测生活在黄龙洞的更新世晚期人类经常使用前部牙齿从事啃咬、叼衔、或剥离坚韧的食物或非食物物品等活动,并可能将前部牙齿作为工具使用;齿间邻接面沟提示当时人类经常从事剔牙活动。结合已经在黄龙洞发现的其他人类活动证据,我们认为当时人类可能从事狩猎活动,食物构成中包含有较多的肉类及粗纤维植物。 相似文献
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XU600型钻机是我国自行设计自行制造的新型钻机,它比国外同类型的钻机,在性能等方面有不少优越的地方。我队是在一九七一年十月底开始使用这种设备的。由于使用时间不长,加以在使用、维修和管理上还存在一些缺点;同时也感到这种钻机在设计、制造方面,也还有需要改进的地方;因此,在使用过程中,曾发生过一些故障。现将我们使用中的体会和建议提出来,供其他兄弟使用单位参考,并与设计制造部门商讨,不当之处,请予指正。 相似文献
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介绍了刃具斜切入破岩的试验装置及试验结果，推导出了跃进载荷的计算公式，并对试验结果进行了理论分析，探讨了影响刃具侵入岩石难易的因素和影响破岩比功大小的因素。 相似文献
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雄安新区位于太行山以东平原区,100 m以浅地层以冲洪积冲湖积砂层和黏土层为主,工程地质条件良好。中国地质调查局组织实施了工程地质勘查工作,获取了百余个钻孔的地层、标贯、测试等地质数据,形成了雄安新区工程地质勘查技术方法体系,建立了工程地质钻孔数据库及三维模型,为雄安新区规划建设提供了有力支撑。本文从工程地质钻探数据获取、数据集成方法、地质资料处理技术等方面进行了整理和归纳,利用三维可视化软件建立工程地质三维结构模型。以雄安新区工程地质勘查数据集应用的实例,为城市地质调查和数据集处理及应用提供参考。 相似文献
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《International Geology Review》2012,54(8):785-795
During the past three decades Albania has been a major world source of chromite-in terms of both mine production and exports. However, the recent steep decline in Albania's production and export of chromite and ferrochromium has raised the question of the country's future status as a supplier of these commodities to the world market. This report describes the salient characteristics of Albania's chromium resources; examines the raw material base, mining and processing facilities, foreign trade, and programs controlling their development; and assesses future development prospects for the industry. 相似文献
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美国宾汉姆斑岩铜矿是全球著名矿床,近百年的资源开发、矿石加工和冶炼等生产活动对当地环境和生态系统造成了严重破坏,污染治理成本高昂。此外,矿区还有大量其他矿业公司历史上遗留下的污染物,治污责任纠缠不清。然而依照国家法律、政府,以及企业的社会责任心与发展策略,该区环境污染得到了成功清理和复垦,企业重新走上一条可持续发展之路,产生了显著的环境、社会、监管和经济效益。介绍宾汉姆矿山治理迂回曲折的过程,试图能给中国现有同类矿山、国家相关管理部门带来有益启迪和借鉴。 相似文献
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鄂尔多斯盆地矿产资源丰富,是我国陆上第二大沉积盆地,加快该盆地矿产资源的勘探工作,对推进我国中西部能源基地建设,缓解我国当前能源危机问题有非常重要的现实意义。但是,由于该地区大部分处于黄土高原,地表条件复杂,表层岩性变化剧烈,地震勘探一直是难点。本文以姬塬地区为例,针对地震勘探难点,对黄土塬变化多样的地表地震及复杂的地下地质条件进行了综合分析,综合应用层析静校正、时空转换、反褶积等复杂地区地震资料处理技术,取得了较好的处理效果,提高了信噪比,可以为类似条件的地震资料处理提供借鉴。 相似文献
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T. Kasvand 《Mathematical Geosciences》1983,15(1):3-23
The digital computer can be a tireless friend and assistant to the geologist. The computer has no innate intelligence, but given adequate programs to analyze and interrelate the information on maps, photos, surveys, and other material, the computer can serve as an analytical tool and consultant. To the geologist's qualitative knowledge, theories, and models can be added the possibility of the computer's mathematically precise numerical answers, confirming or refuting the original ideas. In the interactive mode in particular, a dialogue between the geologist and the computer is established, where the geologist and the computer can complement each other's abilities. The basic principles of processing two-dimensional geological data, such as maps, charts, photos, and survey results, are discussed. Some comparisons are also made between the rule-based methods of Prospector, developed at Stanford Research Institute, and the more intuitively guided image-based procedures of GIAPP, developed on the equipment at the National Research Council of Canada, in collaboration with the Geological Survey of Canada and the University of Ottawa. 相似文献
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M. T. Ammami A. Benamar H. Wang C. Bailleul M. Legras F. Le Derf F. Portet-Koltalo 《International Journal of Environmental Science and Technology》2014,11(7):1801-1816
The maintenance of harbor waterways generates large amounts of dredged sediments which are often rich in coexisting organic and inorganic contaminants. Electrokinetic remediation treatments have recently been developed for the simultaneous removal of heavy metals and polycyclic aromatic hydrocarbons (PAHs), using various enhancing agents generally tested sequentially. In this study, different processing fluids were tested, alone or mixed, to improve the decontamination of aged model sediment contaminated with cadmium, lead, chromium, copper, zinc, and five PAHs. Nitric acid (NA) and citric acid (CA) were tested to avoid the formation of an alkaline front into the sediment and favor the metals removal, while an anionic surfactant [sodium dodecyl sulfate (SDS)] and a nonionic surfactant (Tween 20) were tested to solubilize and mobilize PAHs. Processing fluids were circulated under a constant voltage gradient of 1 V cm?1 for 10–14 days. NA showed an excellent potential to remove metals (76.8–99.9 % removal) and PAHs (70.3–89.7 % removal) in a single run. Besides, the mixture of Tween 20 and CA, more environmental friendly, could be considered as a relatively good processing fluid for the simultaneous removal of metals (10.3–90.8 % removal) and PAHs (53.6–61.6 % removal) from the fine-grained sediment, while SDS mixed to CA was not a good candidate for this purpose (0.1–65 % removal for metals and 34.1–41.0 % removal for PAHs). 相似文献
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Broadband correlation processing for extracting time-domain Green's functions and coherent wavefronts from random ocean noise has been demonstrated recently using experiments and numerical simulations that are consistent with theoretical predictions. Ocean acoustic noise processing presents additional challenges over its seismological counterpart. Mainly, the ocean environment is temporally non-stationary and it is spatially heterogeneous. Further, in the lower underwater acoustic frequency regime of about 20 to 500 Hz, space-time episodic shipping is the dominant noise source. The data from different publications and research groups are gathered here, with the goal being to review recent underwater acoustic research that demonstrates the viability and potential applications of passive coherent array processing in the ocean. 相似文献