TK-3液压立轴式钻机

继TK-1、TK-4、TK-5钻机之后,我们又研制成功了 TK-3钻机。这种钻机保留了原 TK 系列钻机的优点,克服了 TK 系列钻机的不足,在试验中获得较好的评价。      

煤矿井下坑道钻机电控自动化技术研究

为顺应煤矿井下钻探装备自动化、智能化发展方向，根据煤矿井下坑道钻机特点，研制了一套钻机电控系统，实现了钻机远程控制、参数监测、工况判断和安全互锁等功能，并在钻机单动控制基础上进行了钻机自动钻进和自动起钻技术研究，大大提高了煤矿井下钻机自动化程度。地面功能性试验与现场工业性试验表明:设计的电控系统功能性、实时性和可靠性满足使用要求。研制的钻机电控系统配套在钻机上，可提高钻机自动化水平，更好地保障了施工人员和设备的安全，对推动煤矿井下钻机智能化发展有积极作用。      

日本桩工机械和基础施工方法现状

介绍了日本的几种常用桩工机械和基础施工技术，包括螺旋钻机、旋挖钻机、全套管钻机、水平顶管钻机、锚杆钻机、软地基处理钻机及其相应的施工方法。并提出了一些建议。     

岩心钻机的全液压方向及研制中的几个问题

本文从全液压岩心钻机的调速性能、长行程给进、无塔升降、提高机械化、仪表化程度、简化钻机结构等方面与油压立轴式钻机的发展、局限性及国外对该类型钻机改造的新动向等做了较全面的对比。并对全液压岩心钻机的传动效率、成本、维护保养做了具体分析。同时还介绍了国内外这两类钻机在生产中取得的部分经济指标。从理论上和生产使用效果两方面肯定了全液压钻机是岩心钻机的发展趋向。     

水井钻机和工程钻机的现状及展望

简要介绍了我国水井钻机和工程钻机现阶段的状况，并通过介绍国外顶驱液压动力头钻机、旋挖钻机的情况，提出水井钻机和工程钻机开发的建议。     

国内水井钻机的现状及发展趋势

简要介绍了水文水井钻机的发展历史,以及我国现阶段水井钻机的概况及技术特点,通过与国外钻机的性能对比,分析了我国转盘式水井钻机在技术上与国外的差距,结合全液压动力头水井钻机的技术特点,提出了研制多功能全液压动力头水井钻机,可以大大缩短我国与国外在技术上的差距,这也是当前各国水井钻机的发展方向。     

我国地质岩心钻机的发展方向

我国地质岩心钻机的发展方向积钻机１５０余年的发展经验，地质岩心钻机的发展是与工业技术的进步和钻探工艺技术的发展相适应的。迄今为止地质岩心钻机已形成了转盘式、立轴式和全液压顶驱式三种主要机型。后者在我国钻机界被称为第三代钻机，视为今后钻机的发展方向。为...     

CMD系列模块化钻机的研制及地热施工中的应用

CMD系列模块化钻机是顺应国家对能源开发和相应勘探钻机国情发展的需要而研制的新一代能源钻机。本文对CMD系列模块化各规格钻机的性能参数和结构功能进行了介绍,并结合该系列钻机在地热井施工中的应用情况,对该系列钻机在地热井施工中具有的优势进行了归纳和总结。     

浅谈煤矿井下全液压钻机的设计要点

结合ZDY3200S型全液压钻机及其在生产实际中的应用情况,阐述了煤矿井下全液压钻机设计时,钻机的总体布局、确定基本参数的要求、钻机机械传动主要部件的结构及钻机的特点。     

浅析地质岩心钻机发展趋势

在“八五”计划确定之际为正确选型并确定新型钻机的研制开发方向，必须对各类钻机进行科学的比较评价。而在比较时，一方面要考虑钻机技术性能的优劣、可靠性和机械化程度等；另一方面还需考虑不同时期各类钻机生产、销售的数量、比率及其变化，并要注意不同类别市场中各型钻机占有率的实际情况。本文介绍了有关液压钻机、动力头钻机的统计数字及交流变频驱动钻机的最新进展情况，据此对今后我国新型地质岩心钻机的研制方向提出了具体意见。     

The terrestrial fauna of the Late Triassic Pant-y-ffynnon Quarry fissures,South Wales,UK and a new species of Clevosaurus (Lepidosauria: Rhynchocephalia)

Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco.     

The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts

The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H₂O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H₂O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species.     

Quaternary stresses revealed by calcite twinning inversion: insights from observations in the Savonnières underground quarry (eastern France)

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).     

HYDROGEOLOGY

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     

METAMORPHIC PETROLOGY

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),     

SERIALS

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GEOPHYSICAL EXPLORATION

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-     

QUATERNARY GEOLOGY & GEOMORPHOLOGY

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-     

PETROLEUM GEOLOGY

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.)     

GEOCHEMISTRY

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