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Assessment of heavy metals contamination in soils of Dexing region, Jiangxi Province, china

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Acta Geochimica 2006年第S1期 27-28页

作者： Cuihua CHEN1, Shijun NI2, Binbin HE3, Chengjiang ZHANG2 1 School of Geosciences, chengdu University of Technology, chengdu 610059, china 2 School of Applied Nuclear Techniques & Automatic Engineering, chengdu University of Technology, chengdu 610059, china 3 Institute of Geo-Spatial Information Science and Technology, University of Electronic Science and Technology of china, chengdu 610054, china

On Inverse Limits of Normal δθ-refinable Spaces

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Chinese Quarterly Journal of Mathematics 2003年第3期18卷 286-290页

作者： CAO Jin-wen (College of Information Management, chengdu University of Technol ogy, chengdu 610059, china) College of Information Management Chengdu University of Technology Chengdu 610059 China

This paper proves the following results: Le t X= lim ←｛X σ,π σ ρ,Λ｝,｜Λ｜=λ, and every p rojection π σ: X→X σ be an open and onto mapping. (A) If X is λ-paracompact and every X σ is normal and δθ-refinable, then X is normal and δθ-refinable; (B) If X is hereditarily λ-pa racompact and every X σ is hereditarily normal and hereditarily δθ- refinable, then X is hereditarily normal and hereditarily δθ-refiable .

关键词： inverse limit λ-paracompact normal and δθ -refinable hereditarily normal hereditarily δθ-refinable.

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川西须家河组气藏气井采气新技术探索

西南石油大学学报（自然科学版） 2008年第4期30卷 115-118,8+7页

作者：陈昭国 "油气藏地质及开发工程"国家重点实验室.成都理工大学

针对川西须家河组气藏埋藏深、裂缝发育、含CO2、采气过程中见水快和采气管柱易腐蚀的生产难题,从地层流体流动能力随压差增大而增加、管柱腐蚀随CO2分压增高而加剧出发,提出在采气过程中,运用临界产量(最大生产压差)配产,延长无水采气... 详细信息

针对川西须家河组气藏埋藏深、裂缝发育、含CO2、采气过程中见水快和采气管柱易腐蚀的生产难题,从地层流体流动能力随压差增大而增加、管柱腐蚀随CO2分压增高而加剧出发,提出在采气过程中,运用临界产量(最大生产压差)配产,延长无水采气期;采用井下节流技术降低采气管柱CO2分压,降低油管腐蚀速率。二者结合既能合理配产,延长气井污水采气时间,也能从工程上保证控制生产压差和降低井筒CO2分压的实现,从而达到提高气井生产效率的目的。

关键词：深井采气定井底压差节流无水采气期四川盆地

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傅里叶系数为周期脉冲函数的信号研究

数据采集与处理 2010年第S1期25卷 69-71页

作者：刘唯一成都理工大学信息工程学院成都610059

通过对傅里叶系数为周期脉冲的信号的一般规律的讨论和分析,研究了上述信号的一般数学表达式,给出了一系列具体的公式,运用此类型的公式,在运算这类型信号的时候便可以大大简化推演过程,并在给出该系列公式后,运用一个实例说明了这类型... 详细信息

通过对傅里叶系数为周期脉冲的信号的一般规律的讨论和分析,研究了上述信号的一般数学表达式,给出了一系列具体的公式,运用此类型的公式,在运算这类型信号的时候便可以大大简化推演过程,并在给出该系列公式后,运用一个实例说明了这类型公式的具体用法。通过该实例可以清楚地看到,使用本文中推出的一般规律,对于这类型的信号,便可以省略纷繁复杂的数学运算,达到对于该类型信号简化计算的目的。

关键词：傅里叶系数周期信号脉冲函数

CHARACTERISTICS OF VOLCANIC ROCKS AND ITS TECTONIC SETTING IN WESTERN PART OF LAZHULONG-JINSAJIANG STRUCTURAL BELT

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地学前缘 2000年第S1期7卷 217-217页

作者： Ma Runze, Shi He (chengdu University of Technology, chengdu 610059, china)

Studied Volcanic rocks are zonally distributed between Qiangtang and Kunlun landasses, that is in the western part of Lazhulong\|Jinsajiang tectonic belt. It is bounded on the north by Yanghu\|Hohxil deep fult and on the south by Bairabu Co\|Ruolagangri deep fault. As component part of ophiolites in this belt, volcanic rocks mainly occuring within low\|grade metamorphic and thick flysch deposits of Lower Permian and Late Triassic, are associated with gabbro, diabase, ultramafites, radiolarian silicalites and limestones, consisting of basalts, dorgalites, picrites, basaltic\|andesites, andesites and a few pyroclastic rocks. This suit of volcanics\|bearing flysch deposits had been considered as Triassic or Late Triassic stratum and also called as “Ruolagangri Group” *** basalts in this belt are characterized by having lower SiO\-2, higher TiO\-2(1 74%～4 78%, average 2 94%) and K 2O+Na 2O(mostly 3 50%～5 00%) contents, and usually Na 2O>K 2O. The total REE abundances in basalts which vary from 115 68×10 -6 to 323 66×10 -6 are relatively high, and all of their distribution patterns show moderately or strongly LREE\|enriched. The LREE/HREE ratios range from 8 74 to 14 41, (La/Yb) N from 9 53 to 19 56, and showing faint positive or no Eu anomaly. Incompatible trace elements such as Sr, Rb, Ba, Th, Ta, Nd, P, Zr, Hf etc. are relatively concentrated, whose contents usually are several times to several tens of MORB, while Yb, Y, Sc, Cr are obviously depleted. The characteristics of Petrochemistry and rare elementary geochemistry indicate that the volcanic rocks belong to series of alkaline or subalkaline basalt and show the features of alkaline—transitional basalt under the setting of continental rift or ocean island, and also similar to that of Late Carboniferous basalts in Chabu\|Chasang area of central Qiangtang and that of Permian Emeishang basalts in southwest of china.

关键词： northern Xizang Lazhulong\|Jinsajiang volcanic rocks geo chemistry rift

THE DECOLLEMENT IN THE QIANGTANG BASIN, TIBET

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地学前缘 2000年第S1期7卷 171-171页

作者： Wu Shan (Department of Geology, chengdu University of Technology,chengdu 610059,china)

Qiangtang Basin in northern part of Tibet is significant on geological research, and it is also a prospect area for petroleum and gas exploration. Qiangtang Basin mainly consists of Triassic\|Jurassic carbonate strata, extending E—W. The basement of the Qiangtang Basin composed of Lower\|Middle Proterozoic exposed in the central part, and is called Central Upright *** decollement and thrust structure occurred both in Qiangtang Basin and the Central Upright Zone, which have resulted in important influence for petroleum and gas exploration.(1) Tectonic style:① The suprastructure of Qiangtang Basin is dominated by parallel folds (Ramsay’s classification Ib\|Ic) and brittle faults.② Most of the folds are open folds with interlimb angles 80～120°and lack of axial cleavage.③ The 3\|D shape of fold is cylindrical, without or little change on area and volume.④ The folds association is ejective folds (i.e. with the characteristics of the Jura\|type fold).⑤ The plastic bed flowing with the higher zone of the folds formed diapir structure, which is the important evidence indicating decol lement.

关键词： Tibet Qiangtang Basin decollement petroleum exploration

Study on the Safety of the Foundation Rock Masses in the Tangkou Bank of the Taipinghu Bridge

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地球科学进展 2004年第S1期19卷 329-332页

作者： FANG Dong-heng~1, DUAN Hai-peng~(1,2), WANG Yun-sheng~1 WANG Shuang-ji~2, HU Ke~2, QIAO Guo-wen~1 (1. Environment and Civil Engineering, chengdu University of Technology, chengdu 610059,china 2. Anhui Highway Exploration Design Institute, Hefei 230041, china)

The Taipinghu Bridge is an important project, and the safety of rock masses of its foundation is very crucial. This article analyzes the potential causes of the deformation of the rock masses of the bridge foundation, and uses the Fast Lagrangian Analysis of Continua to analyze the geologic model. The simulating process shows that no mater in the excavating process or in the loading process the rock masses are suit for the engineering. The modeling and analyzing process can be used for reference.

关键词： FLAC3D Numerical simulation Engineering Bridge foundation

Discovery of the granulite xenoliths in Cenozoic volcanic rocks from Hoh Xil,Tibetan plateau

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Progress in Natural Science:Materials International 2003年第9期 74-78页

作者： LAI Shaocong, YI Haisheng and LIN Jinhui (1. Key Laboratory of Continental Dynamics, Ministry of Education Department of Geology, Northwest University, Xi'an 710069, china 2. chengdu University of Technology, chengdu 610059, china) Key Laboratory of Continental Dynamics，Ministry of Education Department of Geology，Northwest University，Xi'an 710069，china chengdu University of Technology，chengdu 610059，china

Two-pyroxene granulite and clinopyroxene granulite xenoliths have been recently discovered in the Late Paleogene toNeogene volcanic rocks (with ages in the range of 4.27～44.60 Ma) that outcropped in Hoh Xil, central Tibetan plateau. Based on theelectron microprobe analysis data, the xenoliths provide constraints for the formation equilibrium temperatures of the two-pyroxene gran-ulite being about 783 to 818℃ as determined by two-pyroxene thermometry and the forming pressure of the clinopyroxene granulite beingabout 0.845 to 0.858 GPa that is equivalent to 27.9～28.3 km depth respectively. It indicates that these granulite xenoliths represent thesamples from the middle part of the thickened Tibetan crust. This discovery is important and significant to making further discussion onthe component and thermal regime of the deep crust of the Tibetan plateau.

关键词： granulite xenolith Cenozoic volcanic rocks Hoh Xil Tibetan plateau.

层状结构岩体顺层斜坡滑移-弯曲失稳计算探讨

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山地学报 2006年第1期24卷 88-94页

作者：蒋良潍黄润秋成都理工大学环境与土木工程学院成都理工大学环境与土木工程学院四川成都610059

中-陡倾顺层斜坡在下端被阻挡及嵌固时可能产生滑移-弯曲型结构变形与屈曲失稳,但以前失稳分析采用的力学模型的边界条件及变形形态对地质原型的符合性较为不足。因顺层斜坡上部平直段与下部屈曲段是一个连续的整体,弯曲段边界条件及变... 详细信息

中-陡倾顺层斜坡在下端被阻挡及嵌固时可能产生滑移-弯曲型结构变形与屈曲失稳,但以前失稳分析采用的力学模型的边界条件及变形形态对地质原型的符合性较为不足。因顺层斜坡上部平直段与下部屈曲段是一个连续的整体,弯曲段边界条件及变形形态的合理对正确建立挠曲线方程和临界屈曲失稳分析均非常重要。在分析了顺层斜坡地质原型变形形态的基础上,由考虑自重的阻滑端固定的斜置等厚弹性板梁模型,提出了以地质原型变形形态抽象出相应边界条件的分析方法,及理论上求解挠曲线的适定三阶微分方程。鉴于弯曲段长度可现场测知,以所分析的边界条件拟定了简便合理的、曲线形态能较好反映地质原型变形形态的多项式近似挠曲线。通过势能泛函的平衡稳定判断方法,滑移-弯曲破坏的临界条件得到确定,失稳临界弯曲长度计算式较符合工程实际。

关键词：层状结构顺层斜坡滑移-弯曲稳定条件能量法