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811.
兴地断裂构造特征及其演化历史 总被引:4,自引:1,他引:4
兴地断裂是塔里木盆地东北缘十分重要的大型控盆断裂,该断裂对塔里木盆地东北缘地层发育、构造古地理、库鲁克塔格断隆-满加尔坳陷的构造演化等具有重要的控制作用.根据断裂带中糜棱岩、构造角砾岩、构造透镜体、断层崖、断层三角面等不同构造形迹的性质,结合断裂对区域地层发育和构造古地理的控制作用,对断裂的变形期次和性质进行了划分,并讨论了断裂的演化历史及其形成的地球动力学背景.断裂经历了元古代—新生代漫长的构造演化历史,发生了多期次不同性质构造活动.其构造演化主要包括形成期(Pt2);伸展期(Pt3—O);挤压反转期(O2末期和O3末期);左旋压扭期(Pz2末期)、逆冲推覆期(E末期—Q3)和右旋张扭期(Q4)6个构造演化阶段. 相似文献
812.
《应用地球物理》2006,3(3):179-186
3D visualization technology is a new seismic interpretation technology that is completely different from traditional seismic data interpretation technologies. This method takes geologic bodies or any 3D region of interest as a unit and integrates the points, lines, and planes of the bodies to make a 3D visual interpretation. This technology can be integrated with the coherence technique to interpret complex faults. Spatial domain automatic horizon tracing can accurately determine structural features. Target sculpting can determine the spatial dimensions and depth extent of perspective 3D lithology bodies using inversion data. I applied this technology to the interpretation of the complex block structures in the Guanxi area of Dagang Oilfield and the prediction of subtle reservoirs in the western slope of the Qinan sag with good results. This study indicated that the visual interpretation technology can be widely and effectively applied in oil field development and to improve the exploration success ratio. 相似文献
813.
Establishment of new structural indices for the coals with various susceptibilities to self-ignition
Turchanina Oksana Achim Bechte Smirnov Michael 《中国地球化学学报》2006,25(B08):51-51
One of the main aims of the coal industry is to improve conditions and increase the safety of the work. The questions of environment also need to be considered. In the complex of science-technological problems the focus is placed on how to reveal spontaneous combustion of coals and siltages. The results of spontaneous combustion of coals and siltages are bereavement of the minerals, promise for failures and accidents, and pollution of the environment. The decision of problem of the prevention is very hard, because the spontaneous combustion of coals is an unforeseeable and poorly studied process. The methods of preventing spontaneous combustion of coals must be established. In the first place, these investigations must start with the study of the structure of these coals. The aim of the present work is to determine the differences in the structure of coals with various susceptibilities to spontaneous combustion .Main methods of studying coals include ultimate and proximate analyses, petrographic analysis, analysis of ashes, X-ray (apparatus "Kristalloflex Siemens" using filtered cuprum radiation), extraction (Dionex ASE 200), gas chromatography-mass spectroscopy (GC-MS) Finnigan MAT GCQ. Proximate, ultimate and petrographic analyses revealed the distinction in the structure of coals with various susceptibilities to self-ignition. 相似文献
814.
Robert Jankowski 《地震工程与结构动力学》2006,35(4):517-524
Earthquake‐induced structural pounding has been recently intensively studied with the help of different models of impact force. It has been verified through comparisons, that the non‐linear viscoelastic model may be considered somewhat the most accurate one among them. The aim of this short paper is to derive an approximating formula relating the impact damping ratio, as a parameter of the model mentioned, with a more widely used coefficient of restitution. The accuracy of the derived analytical formulation has been confirmed through the comparison with the results of numerical simulations. Copyright © 2005 John Wiley & Sons, Ltd. 相似文献
815.
阿尔金断裂和郯庐断裂是亚洲大陆上规模最大的2条晚中生代以来活动的走滑断裂带,前者可能同步错移并分隔曾经统一的古生代克拉通盆地和侏罗纪箕状断陷的原型盆地,后者中段向北错移了属于扬子板块的苏北-胶东地块,北段佳(木斯)-依(兰)断裂切错了松辽与泛三江-哈巴罗夫斯克盆地,敦(化)-密(山)断裂左行错移了鸡西-七台河盆地和虎林盆地。因此,塔里木西南盆地油气资源的勘探评价应与柴达木盆地对比进行,巴丹吉林、腾格里沙漠掩盖下的阿拉善地块可与北塔里木地块对应,在其侏罗系—白垩系陆相盆地沉积之下可能保存了古生代克拉通沉积,可作为有潜力的油气资源战略选区;南黄海中部隆起带是苏北盆地建湖隆起的东向延伸,其震旦系—三叠系海相碳酸盐岩油气藏为潜在的勘探目标区;郯庐断裂北段的构造复位研究,对拓宽东北地区油气资源潜力区和重新认识松辽盆地形成背景、成盆机制有重大的理论与实践意义。 相似文献
816.
变刚度半主动结构振动控制的试验研究 总被引:8,自引:0,他引:8
本文成功地完成了五层框架的变刚度半主动结构振动控制的模拟地震振动试验,这不仅是我国的第一个变刚度半主动结构振动控制的试验,在国际上也是少数几例之一。本文介绍了试验系统的构成,试验内容,试验结果的分析及试验结论等。 相似文献
817.
Tong-En Mao Zhan-Po Liu Chang-Fang Xu Hong-Kui Zhang Su-Rong Yu Meng-Jing Lei 《地震学报(英文版)》1998,11(2):189-196
The 1° × 1° distribution map of crust-mantle structural ratio R for the lithosphere along the Longitudinal Seismic Belt of China has been compiled using computer based on the results of
geophysical prospecting by previous researchers, and the latest results by the present authors. Based on this map, an insight
into the structural features of the crust-mantle assemblage along the Longitudinal Seismic Belt has been gained, while their
relation to seismic activity and the distributions of geothermal flux and intracrustal high conductivity-low velocity layers,
as well as their tectonic effect to seismicity have been discussed.
Contribution No. 97A0079, Institute of Geophysics, State Seismological Bureau, China. 相似文献
818.
MK—2型全液压坑道钻机 总被引:1,自引:0,他引:1
MK—2型全液压坑道钻机为一种轻便的井下浅孔钻凿设备,是吸取国外先进钻机优点并结合国内实际情况研制而成的,主要用于井下瓦斯抽放、超前探测及煤体注水的施工作业。本文介绍了该钻机的结构、技术参数和工业性试验情况。 相似文献
819.
Effects of galvanic distortion on magnetotelluric data over a three-dimensional regional structure 总被引:2,自引:0,他引:2
Although the galvanic distortion due to local, near-surface inhomogeneities is frequency-independent, its effect on the magnetotelluric data becomes, in a 3-D structure, frequency-dependent. Therefore, both the apparent resistivity and the phase responses are disturbed, and a correction should be carried out prior to the 3-D interpretation in order to retrieve the 3-D regional impedance tensor. In many cases, the structure is 2-D for depths corresponding to a first range of periods and 3-D for longer periods (called 2-D/3-D). For these cases, a simple method which allows us to retrieve the 3-D regional impedance tensor (except the static shift) is presented. The method proposed uses the Groom & Bailey decomposition of the distortion matrix for the short periods. Three examples are presented: two using synthetic data and one employing real data. These examples show the effect of the galvanic distortion over a regional 2-D/3-D model and the retrieval of the regional transfer functions from the distorted ones. 相似文献
820.