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fracture zones
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  破裂带
     ON THE FRACTURE ZONES OF CHANGMA (昌马) EARTHQUAKE OF 1932 AND THEIR CAUSES
     1932年昌马地震破裂带及其形成原因的初步探讨
短句来源
     MODELLING RESEARCH ON THE FORMATION MECHANISM OF DEEP FRACTURE ZONES IN HUANGLASHI LANDSLIDE
     黄腊石滑坡深部破裂带形成机制的模拟研究
短句来源
     Intracontinental Earthquakes in China-Investigation of Fracture Zones of Three Strong Earthquakes in Northwest China
     中国内陆地震——西北三次强震破裂带考察
短句来源
     ON FRACTURE ZONES
     破裂带中几个问题
短句来源
     MODELLING ON THE DEEP SEATED DEFORMATION AND FRACTURE ZONES IN HUANGLASHI LANDSLIDE
     三峡黄腊石滑坡深部变形、破裂带的模拟研究
短句来源
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  破碎带
     Technical Troubles and Countermeasures while Penetrating Severe Fracture Zones in Xin 1 Well
     新1井严重破碎带地层钻井技术难点及对策
短句来源
     GEOLOGICAL FEATURES OF ALTERED ROCK-TYPE GOLD DEPOSIT IN FRACTURE ZONES DEVELOPED IN THE EXOCONTAIT ZONE OF YANBAGIAO ROCKBODY AND A DISCUSSION ON RELATED PROBLEMS
     岩坝桥岩体外接触带破碎带蚀变岩型金矿地质特征及其相关问题探讨
短句来源
     Their application to the northern Songliao basin shows that they can improve the accuracy and efficiency of fault interpretation, such as in defining the extent of faults and the width of their fracture zones, as well as defining small faults with only 3-5m throws.
     这些方法在松辽盆地北部的应用表明,在断层的延伸位置、破碎带宽度等方面,解释精度比常规方法有很大提高,并能识别出断距仅为3~5m的小断层,在二维工区获得了高精度的成图结果,不仅提高了构造的解释精度,而且提高了解释的效率.
短句来源
     The rock mass slope stability is directly influenced by mudding intercalation within the fracture zones and fault zones.
     边坡岩体中的层间剪切破碎带、断层破碎带不同程度地赋含泥化夹层,直接影响边坡的岩体结构。
短句来源
     CHARACTERS OF ALTERED FRACTURE ZONES IN YUANLIN GOLD DEPOSIT AND ITS PROSPECTING SIGNIFICANCE
     元岭金矿蚀变破碎带特征及其找矿意义
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  裂隙带
     The genetic model is inferred that the factor of self-gravity caused the accumulation of granite dump and hollow with the fracture zones as a precondition for the formation of granite dump,that is to say that the man-made and natural factors induced the landslide.
     其成因模式是:裂隙带为形成花岗岩滚石创造了条件,自重力因素造就了花岗岩滚石和空洞组成的堆积体,人为或自然因素诱发滑坡。
短句来源
     As an effective investigation technique, common-offset SH reflection method can be carried out fast in the field and easy to detect caves and underground karst fracture zones.
     作为一种有效的探查技术,等偏移横波(SH)反射法具有探测迅速,易于探测土洞、地下岩溶裂隙带的特点。
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  “fracture zones”译为未确定词的双语例句
     Asteroids(probably 1 km sized)struck the Earth with a frequency of 4 6×10 -6 a -1 .These impacts intensified the global(or vast regional)hydrothermal activities on fracture zones,with anomalous Ni Ir and chalcophile deposits ensuing.
     发生的频率为4.6×10-6a-1。
短句来源
     Taking a three-point bending beam as an example,the initial damage and fracture zones were determined by the approach of CAFMDM.
     方法以三点弯曲混凝土梁为例,应用断裂力学与损伤力学耦合分析方法从理论上确定初始损伤区与断裂区,然后用损伤力学的方法、数值模拟混凝土梁的破坏过程.
短句来源
     Through 1∶2000 geological survey, 24 tectonic fracture zones across the GolmudLhasa railway are identified in North Tibetan Plateau.
     通过1∶2000活动断裂勘测与地质灾害调查,在青藏铁路沿线鉴别出24条不同规模、不同宽度的构造裂缝带。
短句来源
     Furthermore, the little fractal value can show mineralization and F5 and F16 fracture zones show a good ore prospecting forefround.
     此外,较小的分维值可以指示成矿作用的发生,F_5、F_(16)断裂带也有较好的找矿前景。
短句来源
     The seismic risk analyses of main fractures show that the main fracture zones in the east part of the project area are provided with structural conditions for occurrence of earthquakes of over magnitude 7, and those in the west part of the project area have risks for medium strong earthquakes of magnitude 5~6 to occur.
     各主要断裂地震危险性分析表明 ,工程地区东部主要断裂带具备发生 7级以上地震的构造条件 ,西部主要断裂带具有发生 5~ 6级中强地震的危险
短句来源
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  fracture zones
Anomalous contents and accumulation rates are confined to peripheral zones of the Deryugin sedimentary basin and large fracture zones.
      
The transition from dispersed to macroscopic fracture is accompanied by the appearance of multiple fracture zones in the regime of explosion-like instability development over a discrete spectrum of spatial scales.
      
We have measured displacement of the free sample surface (laser interferometry), determined optical damage thresholds, and performed fractographic analysis of the fracture zones.
      
Vertical tectonic movements of the crust in transform fracture zones of the Central Atlantic
      
The most significant vertical movements of the oceanic crust in the Central Atlantic are characteristic of transverse ridges confined to transform fracture zones.
      
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An earthquake of magnitude 7. 8, that occurred in Tangshan, on June 28 1976 was accompanied by an earthquake fracture zone of 10 km in length along the Neocathaysian Douhe fault across the epicentral region. Its epicenral intensity was XI. On the same day, a strong aftershock of magnitude 7. 1 took place in Luanxian couny where an arc-shaped earthquake fracture zone appeared running through the epicentral region which extended 9 km along the western Luanxian fault. The epicentral intensity of this shock was...

An earthquake of magnitude 7. 8, that occurred in Tangshan, on June 28 1976 was accompanied by an earthquake fracture zone of 10 km in length along the Neocathaysian Douhe fault across the epicentral region. Its epicenral intensity was XI. On the same day, a strong aftershock of magnitude 7. 1 took place in Luanxian couny where an arc-shaped earthquake fracture zone appeared running through the epicentral region which extended 9 km along the western Luanxian fault. The epicentral intensity of this shock was IX. The fractures of these two earthquakes mainly tensile-torsional type. There were three types of fracture patterns combined with each other, namely, the"ξ" type, the oblique type and the zigzag type. They showed that the movements were mainly horizontal. The maximum horizontal displacement of the former was 1. 53 m, while the vertical displacement of the twoamounted to 0. 1-0. 8 m. From the fact that the positions of these two earthquake fracture zones, their mechanics and movement mode were rather similar to that of the Douhe fault and the western Luanxian fault respectively;the long axis of the aftershock area, and the fault plane strike obtained from the surface wave data coincided with the deep Cathysian fault running in NE 50°as obtained from the geophysical prospecting, the study of the ground deformation data and the satellite images. The average displacement determined from the deformation data was 473 cm; larger than that determined from the seismic wave data. The aseismic creep occurred on this deep fault zone preceding the earthquake was similar to many macroscopic creep phenomena appeared along the Douhe fault one year before the earthquake. It could be inferred that these two earthquakes should be the inevitable results of the movements of the Douhe fault(strike: NNE), and the western Luanxian Neocathaysian fault which was driven by the NE 50° deep fault creep of the Cathysian.

1976年7月28日唐山市发生7.8级地震,震中烈度十一度,通过震中区沿华夏系陡河断裂长10公里的地震裂缝带:当日滦县又发生7.1级强余震,震中烈度九度,通过震中沿滦县西断裂产生9公里长的孤形地震缝带。两次地震裂缝以张扭性为主,其组合型式有多字型、斜列式,锯齿状等三种,反映运动的方式以水平运动为主,前者顺时针扭距最大1.53米,两者的垂直落差0.1~0.8米。地震裂缝出现的位置、力学性质、活动方式分别与陡河断裂和滦县西断裂一致;余震区长轴,由面波得到的断面走向与由物探、地面形变与卫星象片工作中发现的走向NE50°的华夏系深断裂一致;由地面形变与地震波两种资料定出的平均错距相差大于473厘米。从这几方面看这条深断裂,震前出现无震蠕动,与震前一年沿陡河断裂出现多起宏观蠕动现象一致,表明这两次地震就是华夏系深断裂蠕动,分别牵动新华夏系陡河断裂和滦县西断裂运动的必然结果。

The east part of China's mainland considered in present paper is limited east of longitude 98°E and south of latitude 42°N. Based on a brief description of characteristics of the Quaternary active faults in the area, the present-day fault activities have been particularly discussed by using geodetic data obtained from short baseline measurements and short levellings across faults. There are four groups of active, faults in the area that respectively trend northeast, northwest, north-south, and east-west; and...

The east part of China's mainland considered in present paper is limited east of longitude 98°E and south of latitude 42°N. Based on a brief description of characteristics of the Quaternary active faults in the area, the present-day fault activities have been particularly discussed by using geodetic data obtained from short baseline measurements and short levellings across faults. There are four groups of active, faults in the area that respectively trend northeast, northwest, north-south, and east-west; and they usually constitute fracture zones with a certain dimensions. The mode of fault movement and the level of their activities are different in different regions. According to the level of their present-day activities, the faults may be divided into four classes: the annual slip rate is ≥10mm/year for the first class, <10-1mm/year for the second, <1 -0.1mm/year for the third, and less than 0.1mm/year for the last. As far as we know, only a few active faults have been found belonging to the first class. Two of them lie in southwest China: the NW-trending Xianshuihe fault (left-lateral strike slip, 9mm/ year) and the NNW-trending Jingdong Weixi fault (right-lateral strike-slip, 10.4mm/ year). Another is the NNE-trending Cangdong fault in North China (right-lateral strike-slip with dip-slip component, 14-18mm/year). Faults belonging to the second class are relatively common and concentrated in North China and Southwest China. In the former area they dominantly appear to be normal faults with right-lateral strike slip, while in the latter active faults are characterized by strikeslip. In north-west China present-day faul activities seem to be not vary high, mainly belong to the third class, and are characterized by upthrust. South China is relatively stable at present, except its coastal areas. Therefore, mobile regions may be regionalized in the area considered, in accordance with the fault activities, the whole area has been regionalized as tive mobile regions (the North China, the Northwest, the Southwest, the Southeast coastal and Taiwan mobile regions) and three relatively stable regions (the Southeast, the Ordols and the Alashan regions).Recently, strong and intermediate earthquakes dominantly took place in the North China and the Southwest mobile regions, especially along some active faults which belong to the first or second class. The Tangshan earthquake on the northern end of the Cangdong fault, and the Luhuo and the Daofu earthquakes on the Xianshuihe fault are examples. Although a series of historical strong earthquakes had occurred along some active faults in the Northwest mobile region and their machanisms had been consistent with the local structures, the seismicity there was not very high in the past years, as the fault slip rate was lower recently.Generally, fault activity in the east of China's mainland is lower than that in the continental margin. And the mode of their movements carry on that appeared since the Quaternary. Finnally the mode of recent tectonic stress action has been analyzed and regarded as mainly relating to the westward motion of the Pacific plate and the northwestward pushing of the Philippine plate, as well as to the uplifting of the Qinghai-Tibet plateau which is caused by the collision between the Indian and the Eurasian plates.

本文分析了中国东部第四纪以来活动断裂的展布和基本特征。根据断层位移测量把活动断裂的现代运动分为四级:第一级为≥10毫米/年,第二级为<10—1毫米/年,第三级为<1—0.1毫米/年,第四级<0.1毫米/年。并根据活动断裂的展布和现代活动程度,把该区分为五个相对活动区和三个相对稳定区。指出了断裂活动的强弱与地震活动有一定的相关性,近年来强震则多发生在第一、二级断裂带上,相反,活动速率较低的断裂,近期地震活动水平不高,也未发生过强震。本文最后讨论了应力作用方式。

On the example of the SE diwa region in China, this paper suggests that the transition from active to quiet period in diwa development is a period of uranium mineralization.The author has calculated the ages of representative uranium ores in south China and adjacent areas. 86.7% uranium deposits were formed in the late Cretaceous to Early Tertiary. Uranium deposits of other ge ologic ages only have a sporadical distribution.Uranium deposits of the diwa stage are distributed along the circum Pacific belt, namely,...

On the example of the SE diwa region in China, this paper suggests that the transition from active to quiet period in diwa development is a period of uranium mineralization.The author has calculated the ages of representative uranium ores in south China and adjacent areas. 86.7% uranium deposits were formed in the late Cretaceous to Early Tertiary. Uranium deposits of other ge ologic ages only have a sporadical distribution.Uranium deposits of the diwa stage are distributed along the circum Pacific belt, namely, southeast China, the southwest United States, Japan and Argentina. The regularities governing their space-time distri bution are of global significance.In terms of crustal evolution, neither extremely quiet nor excep tionally active stages are favourable for the concentration of uranium mineralization. At the culmination of tectono-magmatic activety, the action of hot water becomes so intense as to mobilize uranium. In exi sting platform regions, tectono-magmatic activity becomes weak, urani um mineralization suffers a restriction, uranium is in a disperse state, and uranium deposits are unlikely to be generated. Only during the transition from late Yanshanian to early Himalayan orogeny, i. e., during the transition from active to quiet period in diwa development, when source rocks and accumulation conditions exist, can uranium be redistri buted and concentrated.In space, uranium deposits of the diwa stage are located near the contact of an uplift with a depression and in late fracture zones within an uplifted area.Uranium deposits of the diwa stage have many modes of formation: hydrothermal transformation, leaching-deposition, and polygenetic compound. The latter is the most common metallogenetic type of activated regions.Based on practice, the author suggests the following metallogenetic processes: uranium sourcerock→failure of the uranium source rock due. to tectonic processes→mobilization of uranium under the action of cold and hot solutions→accumulation of uranium during the transition from active to quied period.

本文以我国东南地洼区为例,提出地洼阶段活跃与平静交替时期是铀的成矿期。 笔者对华南及其邻区部分代表性的铀矿石年龄作了统计。86.7%的铀矿床形成于晚白堊世——早第三纪,其它地质时代的铀矿则零星分布。 地洼期铀矿,主要沿环太平洋的我国东南部、美国西南部以及日本、阿根廷等地分布,它的时空分布规律性,具有很重要的全球意义。 就地壳演化看,极平静的时期或过于不平静的时期,都不利于铀矿化的集中。构造-岩浆活动最盛期,热水作用加强,铀活化被搬运。现存地台区,构造-岩浆活动不发育,成矿作用受到限制,成矿阶段铀处于分散状态,不易形成铀矿床。只有到了燕山晚期转向喜山早期,即地洼活跃与平静交替时期,具备有矿质来源有聚集的条件,才产生铀的再分配和富集。 在空间上,地洼期铀矿,多半位于隆起与凹陷相接合处附近和隆起带内较晚期的断裂带等等。 地洼期铀矿虽具有热液改造、淋积等多因复成形成方式,多因复成是活化区最常见的成矿类型。 笔者从实际出发,对其成矿过程简单归纳为:铀源岩→活化期铀源岩遭受构造改造而破裂变形→冷和热溶液的作用铀活化迁移→地洼活跃与平静交替时期铀的聚集。

 
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