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通过结合德国宝峨BG-15型旋挖钻机在广东中海壳牌南海石化输油码头嵌岩桩工程和三一重工SR-200型、北京经纬巨力ZY-200型旋挖钻机在西安市大兴路立交桥梁工程S1标桩基工程中的施工应用情况,分析并与传统的钻进工艺相比,旋挖钻机在工艺、性能、经济和环境保护方面的优势,并就施工中常见问题及解决方法进行了总结,以使旋挖钻机能更好地发挥其优势。 相似文献
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论述了旋挖钻机多功能应用的必要性、多功能设计思路及方案,并对各功能配置及应用做了介绍。通过旋挖钻机的多功能设计,可大大拓展旋挖钻机的使用范围,降低用户设备购置成本,提高成孔质量,满足环保要求。 相似文献
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对旋挖钻机、转盘钻机各自特点和施工成本进行对比分析,提出组合施工方法设想,并通过工程实例得到成功实践,为以后类似工程提供借鉴。客观地提出了旋挖钻机的使用条件和面临的问题。 相似文献
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在分析旋挖钻机研制的首期市场目标和国外旋挖钻机特点的基础上,对国产钻机研制的选型、主要工艺技术参数及井下工器具配套提出了几点意见。 相似文献
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作者在热力工程地沟、小室砼盖板设计计算中,就如何进行汽车荷载作用下的内力分析提出了自己的观点和计算方法。 相似文献
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借鉴国际发达国家在电力管理方面的先进经验以及在电力改革的成功范围,结合近年来我国电力管理的实践,旨在电力资本结构,电网调度交易,厂网分开和竞价上网方面运作,现状等方面的问题进行了比较分析,提出了建设性的意见。 相似文献
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R P Kane 《Journal of Earth System Science》1986,95(1):1-12
Using the method of maximum entropy spectral analysis (MESA) by Burg and the least-squares linear prediction (lslp) (also calledFABNE) by Barrodale and Erickson, the spectra of geomagnetic indices Ap, AN, AS, AE, AU, AL, Dst and cosmic ray neutron intensity at Deep River are obtained for 1965 and 1969 from daily means and for longer periods from monthly means. A large number of peaks of periodicities from 2 days to several years is obtained, many of which are shown by all the indices. Some of these are probably harmonics of the 27 days solar rotation period and the 20–22 years double sunspot cycle period. Comparison is made with results of earlier workers who reported fewer peaks. 相似文献
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We report an empirical determination of the probability density functions Pdata(r) of the number r of earthquakes in finite space–time windows for the California catalog for different space (5 × 5 to 50 × 50 km2) and time intervals (0.1 to 1000 days). The data can be represented by asymptotic power law tails together with several cross-overs reasonably explained by one of the most used reference model in seismology (ETAS), which assumes that each earthquake can trigger other earthquakes according to complex cascades. These results are useful to constrain the physics of earthquakes and to estimate the performance of forecasting models of seismicity. 相似文献
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J. A. Vargas-Guzmán 《Mathematical Geology》2004,36(3):307-322
This paper introduces geostatistical approaches (i.e., kriging estimation and simulation) for a group of non-Gaussian random fields that are power algebraic transformations of Gaussian and lognormal random fields. These are power random fields (PRFs) that allow the construction of stochastic polynomial series. They were derived from the exponential random field, which is expressed as Taylor series expansion with PRF terms. The equations developed from computation of moments for conditional random variables allow the correction of Gaussian kriging estimates for the non-Gaussian space. The introduced PRF geostatistics shall provide tools for integration of data that requires simple algebraic transformations, such as regression polynomials that are commonly encountered in the practical applications of estimation. The approach also allows for simulations drawn from skewed distributions. 相似文献
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满腔热血献电业求是创新铸辉煌--熊显彬大师事迹
一、在设计管理中成长为专家
参加工作以来,熊显彬同志主要参加了綦江电厂、511试验电站、油溪电厂、511电厂2×50MW机组、渡□503电厂2×50MW机组,重庆电厂2×200MW机组、首阳山电厂-期2×200MW机组、清镇电厂三期2×200MW机组的设计,淮北二厂设计,并分别担任主设人、工代组长,并作为专业科长,主管了永昌电厂、闵行电厂、三瓦窑电厂、马鞍石电厂、崇明电厂等工程项目.担任机务热机设计主管科长的闵行电厂2×125MW工程设计和清镇电厂扩建工程设计,分别获得国家优秀设计银质奖和国家优秀设计铜质奖.通过这些工程的设计和锻炼,熟练地掌握了热机专业设计技术,积累了丰富的实际工作经验,具备了解决本专业复杂技术问题的能力,成为了专业技术带头人. 相似文献
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随着经济全球化的进程和我国企业改革的深入,通过企业文化建设,企业理念的营造来增强企业的核心竞争力,越来越为我国企业界所关注,所采用。从目前国内外成功的企业来看,他们都有自己独特的企业文化,并且其企业文化所倡导的企业行为准则对企业核心竞争力的形成无不显示出重要的作用。 相似文献