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the shanxi formation
相关语句
  山西组
    The Shanxi Formation consists of sandstones, siltstones, mudstones and coals, with the limestones being locally developed. The thickness of the Shanxi Formation is from 18.6 m to 213.25 m, with the thicknesses of coal seams being from 0 to 10 m and averaging 4.2m.
    山西组以砂岩、粉砂岩、泥岩为主,石灰岩仅在局部地区见到,该组厚18.60-213.25 m,含可采煤层1-2层,厚度0-10.0 m, 平均4.20 m。
短句来源
    Reservoir Characters of Classic Rocks of the Shanxi Formation at Yi-Meng Area, Northern of Ordos Basin
    鄂尔多斯盆地北部伊盟地区山西组碎屑岩储层特征分析
短句来源
    Simulation and potential evaluation of hydrocarbon regeneration of coal in the Shanxi Formation Huainan Coalmine
    淮南煤矿山西组煤样的二次生烃模拟研究
短句来源
    Based on systematically genetic stratigraphic analysis,this paper has generalized thedepositional architectures and coal-forming features of the Shanxi Formation in Permian age.
    本文从成因地层学的角度系统分析了区内山西组的沉积构成和聚煤特征。
短句来源
    They are (1)bauxitic kaolin rocks in the basal part of the Benxi Formation,(2)tonstein in the Taiyuan Formation,and(3)tonstein in the Shanxi Formation.
    (2)太原组煤夹矸高岭岩; (3)山西组煤夹矸高岭岩。
短句来源
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  山西组
    The Shanxi Formation consists of sandstones, siltstones, mudstones and coals, with the limestones being locally developed. The thickness of the Shanxi Formation is from 18.6 m to 213.25 m, with the thicknesses of coal seams being from 0 to 10 m and averaging 4.2m.
    山西组以砂岩、粉砂岩、泥岩为主,石灰岩仅在局部地区见到,该组厚18.60-213.25 m,含可采煤层1-2层,厚度0-10.0 m, 平均4.20 m。
短句来源
    Reservoir Characters of Classic Rocks of the Shanxi Formation at Yi-Meng Area, Northern of Ordos Basin
    鄂尔多斯盆地北部伊盟地区山西组碎屑岩储层特征分析
短句来源
    Simulation and potential evaluation of hydrocarbon regeneration of coal in the Shanxi Formation Huainan Coalmine
    淮南煤矿山西组煤样的二次生烃模拟研究
短句来源
    Based on systematically genetic stratigraphic analysis,this paper has generalized thedepositional architectures and coal-forming features of the Shanxi Formation in Permian age.
    本文从成因地层学的角度系统分析了区内山西组的沉积构成和聚煤特征。
短句来源
    They are (1)bauxitic kaolin rocks in the basal part of the Benxi Formation,(2)tonstein in the Taiyuan Formation,and(3)tonstein in the Shanxi Formation.
    (2)太原组煤夹矸高岭岩; (3)山西组煤夹矸高岭岩。
短句来源
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  the shanxi formation
The thickness of the Shanxi Formation is from 18.6 m to 213.25 m, with the thickness of coal seams from 0.10 to 10 m and averaging 4.2 m.
      
The Shanxi Formation consists of sandstones, siltstones, mudstones, and coals, with the limestones being locally developed.
      


The #Ⅱ,coal bed of the Shanxi Formation,is a main seam which can be mined in the Jiaozuo coal basin.The occurrence of dunnbass in the coal bed in the eastern part of Jiaozuo is so complex that the coal bed dunnbass is increased more than it is in the west.The mineral composition in the dunnbass consti- tutes a main of Kaolinite,Dickite,Illite,Illite-mentinoril- lonite and quartz. The Kaolinite content is more than 90% in the topp of dun- nbass,under the polarization microscope analysis.Some Kaolinite and...

The #Ⅱ,coal bed of the Shanxi Formation,is a main seam which can be mined in the Jiaozuo coal basin.The occurrence of dunnbass in the coal bed in the eastern part of Jiaozuo is so complex that the coal bed dunnbass is increased more than it is in the west.The mineral composition in the dunnbass consti- tutes a main of Kaolinite,Dickite,Illite,Illite-mentinoril- lonite and quartz. The Kaolinite content is more than 90% in the topp of dun- nbass,under the polarization microscope analysis.Some Kaolinite and Illite retain the false appearance of Feldspar.At the same time,we can watch Illite turn into Kaolinite.These minerals are analysed by X-ray diffraction.The result is Kaolinite face- symbol (001) and (002) which have strong peak value.But the six diffraction peaks in it are unclear.This makes it known that Kaolinite does not have high crystallinity.Between Kaolinite face symbol (001) and (002) in the end of dunnbass,there is not a six peak value,and crystallization is worsened.Secondary Kaolinite face-symbol (001) and (002) have strong peak value in dunnbass. The six diffraction peaks at 20 values from 35 to 40 degrees and it has high crystallinity.Some Kaolinite has turned into Dickite.

二叠纪山西组二:煤层在焦作煤田为主要可采煤层,煤层夹矸的斌存与煤层结构有关,焦作煤田东部二:煤层结构较西部复杂,至使煤层夹矸增多。夹矸的矿物成份经 x 射线衍射半定量分析。主要为高岭石;地开石;伊利石;伊蒙混层矿物:碎屑石英等。上部夹矸中的高屿石含量在90%以上,镜下观察有的高岭石和伊利石保留着长石晶体假象,同时可见伊利石转化为高岭石。以上矿物经 x 射线衍射分析高岭石的(001)面和(002)面上的峰值强,但它们之间的六个峰值不明显,表明高岭石的结晶有序度不高。下部夹矸高岭石(001)面和(002)面之间,无六个峰值,结晶更差,夹矸中次生高岭石的(001)面和(002)面上峰值强。它们之间六个峰值强明显, 值在35~40之间的峰值也清晰,结晶有序度高,有的高岭石已转化为地开石。

The Shanxi Formation of early Permian is approximately 100 meters thick in Pingding-shan Coalfield, western Henan Province. It is composed of sandstones, siltstones, mud-stones , and thick, widespread coals which are believed to be deposited in barrier-lagoon environments and delta environments. The analysis of the deposition is mainly based on depo-sitional sequences, sedimentary structures, palaeocurrent direction, geometry of depositional units and coal bodies, and coal quality.In the lower Shanxi...

The Shanxi Formation of early Permian is approximately 100 meters thick in Pingding-shan Coalfield, western Henan Province. It is composed of sandstones, siltstones, mud-stones , and thick, widespread coals which are believed to be deposited in barrier-lagoon environments and delta environments. The analysis of the deposition is mainly based on depo-sitional sequences, sedimentary structures, palaeocurrent direction, geometry of depositional units and coal bodies, and coal quality.In the lower Shanxi Formation, the barrier-lagoon systems are developed, principal components recognized in it are tidal channel, tidal flat, lagoon, inlet-barrier sequence, and swamp. The upper Shanxi Formation is a progradation sequence of delta systems. Bay, mouth bar, subaqueous distributary channel, and interdistributary deposits are recognized. It is concluded that the basin filled by the barrier-lagoon systems and the delta systems is a brackish, medium-low wave energy, and low-medium tidal range bay.The thick, widespread coals developed in the Shanxi Formation consists of a major coal bed plus associated splits. A clear relationship exists between the geometries of the coal beds and the depositional units underlain the coals. On the inlet-barrier sequences, the coal bed is extremely thick (5 - 7m) and elongates parallel with the trend of the sandstone bodies. Landward, the coal bed splits into two beds both on the lagoon and tidal flat deposits by a thin transgressive depositional unit. In the areas where lagoonal deposits underlie the coals, the lower split is commonly thicker(4 - 5m) than the upper(1 -2m). Inverse situation (the upper is 3-4m, the lower is 1-2m) occurs in the areas where tidal flat deposits underlie the coals. A discontinuous and pinchout belt of the coals occurs on the inlet tidal channel deposits.It is suggested that the thick and widespread coals are developed on the platform of abandoned barrier-lagoon systems, except the discontinuous and pinchout belt where there is an active tidal channel coexisting with the coals.

讨论了河南平顶山煤田山西组的沉积体系和聚煤模式。文中提出山西组下段形成于碎屑障壁海岸环境,山西组上段为三角洲沉积体系的进积部分。已组煤形成于障壁海岸沉积体系的上部,其发育过程明显受到基底沉积环境的控制。已组煤的聚煤作用特征是沉积基底地形高差、压实沉降率与泥炭堆积速率之间的平衡关系随海平面变化而变化。己组煤发育的气候条件可能属热带背景。

Based on systematically genetic stratigraphic analysis,this paper has generalized thedepositional architectures and coal-forming features of the Shanxi Formation in Permian age.It is thought that the Shanxi Formation is a well developed,river-dominated, shallow-waterdelta complex composed of three growth sequences superimposed in the offset pattern.Thesecond growth sequence(B)is considered as the crevasse-delta lobe.The most favourable environment for peat-accumulation was the abandoned delta lobe...

Based on systematically genetic stratigraphic analysis,this paper has generalized thedepositional architectures and coal-forming features of the Shanxi Formation in Permian age.It is thought that the Shanxi Formation is a well developed,river-dominated, shallow-waterdelta complex composed of three growth sequences superimposed in the offset pattern.Thesecond growth sequence(B)is considered as the crevasse-delta lobe.The most favourable environment for peat-accumulation was the abandoned delta lobe and the full-filled lagoon andbay along delta margin. The development of peat swamps and the preservation of coal seamswere firmly controlled by the dynamic processes and position of the active distributary channelsand their crevasse splays or sub-delta lobes during the depositional episode.

本文从成因地层学的角度系统分析了区内山西组的沉积构成和聚煤特征。认为山西组是由三个具一定相序的生长层序错位叠覆而成的一套完整的河控浅水三角洲体系沉积,其中层序B是决口扇成因的亚三角洲叶体。废弃的三角洲叶体及其边缘淤浅的海湾泻湖是最重要的成煤场所,分流河道及其侧翼决口扇亚叶体的具体分布位置和动态变化过程严格控制了沼泽的发育和泥炭的保存。

 
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