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CORRELATION BETWEEN THE TERTIARY STRATA IN OIL-GAS-BEARING AREAS OF china AND THE TYPICAL SEQUENCE IN EUROPE AND AMERICA

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Chinese Science Bulletin 1992年第6期37卷 494-496页

作者： COORDINATED group OF THE TERTIARY RESEARCH PROJECT, china national PETROLEUM corporation (CNPC)

The Tertiary strata in oil-gas-bearing areas of china are mainly composed of continental deposits, with only a few marine deposits in Xinjiang, Taiwan and the southeast sea region. In the widespread Tertiary, a large amount of oil-gas pools have been found. Consequently, it is necessary to draw up a stratigraphical correlation table of the Tertiary

关键词： Tertiary correlation oil-gas-bearing areas of china biotas typical sequence

FACTORS ANALYSIS ON IMPROVING THE PRODUCTIVITY OF THE NONFERROUS METALS INDUSTRY(2)

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中国有色金属学会会刊：英文版 1993年第2期3卷 84-87页

作者： Productivity Research group of the china national Nonferrous Metals Industry corporation,Beijing 100814,china

Our research and investigation proves thatthe growth rate of the productivity of thenonferrous metals industry is much lower thanthat of investment,and that the potential for in-creasing productivity iS very grear,in spite of thecompplicated influence of multiple weak joints re-strieting the increase of the *** solvethese problems,following policies should

关键词： spite productivity creasing joints administrative hardly planned smelting accounting nonferrous

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沁水盆地南部煤层气勘探成果与地质分析

天然气工业 2001年第4期21卷 35-38页

作者：樊生利中联煤层气有限责任公司

沁水盆地南部地区已累计投入 40口井的勘探工作量 ,并取得了重大的勘探成果 ,证实该区为煤层气高渗富集区。从含煤性、含气性、可采性等方面对该区进行了全面分析 ,得出以下认识 :煤层厚度较大 ,分布稳定 ;煤变质程度高 ,煤的吸附能力... 详细信息

沁水盆地南部地区已累计投入 40口井的勘探工作量 ,并取得了重大的勘探成果 ,证实该区为煤层气高渗富集区。从含煤性、含气性、可采性等方面对该区进行了全面分析 ,得出以下认识 :煤层厚度较大 ,分布稳定 ;煤变质程度高 ,煤的吸附能力强 ,含气量高 ,含气饱和度也较高 ;煤体结构、煤岩类型和煤质好 ,煤层割理较发育 ,渗透性较好 ,适合于压裂改造 ;区域构造稳定 ,煤系及上覆连续地层保存较好 ,后期改造、断裂不严重 ,构造较简单 ,煤层气赋存和保存条件好 ;煤层埋藏较浅 ;水文地质条件比较有利。综合评价该区煤层气具有良好的可采性 ,可以作为我国第一个煤层气滚动勘探开发区块。

关键词：沁水盆地煤成气勘探成果勘探评价滚动开发地质分析

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依靠科技创新转变发展方式

中国煤炭 2011年第1期37卷 9-11,66页

作者： Science & Technology Department of china national coal group Corp(china national coal group,Chaoyang District,Beijing 100120,china) 中煤能源集团有限公司科技发展部

中煤能源集团作为国务院国资委管理的大型能源企业,在企业发展中始终坚持科学发展观、注重用技术创新引领企业发展。重点阐述了企业在"十一五"期间科技创新取得的丰硕成果和"十二五"期间企业科技创新的总体思路和主要任务。

关键词：科技创新转变发展方式绿色生产技术中煤能源集团

Theoretical calculation of the finishing rolling elongation in alloying non-quenched and tempered steel

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Progress in Natural Science:Materials International 2006年第8期16卷 859-867页

作者： LIU Zhilin, LIN Cheng and GUO Yanchang (Department of Materials and Chemical Engineering, Liaoning Institute of Technology, Jinzhou 121001, china The Technical Center of Benxi Iron and Steel group corporation, Benxi 117000, china) Department of Materials and Chemical Engineering Liaoning Institute of Technology Jinzhou 121001 China. The Technical Center of Benxi Iron and Steel group corporation Benxi 117000 China

The finishing rolling elongationδof the alloying non-quenched and tempered steel is calculated with the covalent electron number nA of the strongest bond of the alloying phases and the interface electron density differenceΔρof the phase interfaces. The calculations show that the elongationδα-Fe of the matrixα-Fe decreases with rolling refinement, the elongationδα-Fe-C-M of solid solution phases (M denotes alloying element) is inversely proportional to the covalent electron number nAα-Fe-C-M of the strongest bond, the elonga tion decrementΔδα-Fe/α-Fe-C-M caused by interface strengthening is directly proportional to the interface electron density differenceΔρα-Fe/α-Fe-C-M, but the elongation decrementsΔδα-Fe/MCC1 andΔδα-Fe-C/MCC2 caused by dispersion strengthening and precipitation strength- ening respectively are directly proportional to the ratio of the electron density differenceΔρα-Fe/MCC1 andΔρα-Fe/MCC2 of the strengthening interfaces toΔρα-Fe/α-Fe-C of the basic interfaceα-Fe/α-Fe-C. Therefore, the finishing rolling elongation of the alloying non-quenched and tempered steel is considered to be subtracting all the elongation decrements of solution strengthening, interface strengthening, dispersion strengthening and precipitation strengthening from the elongation of the refinedα-Fe matrix. The calculation formulas in this paper are integrated with the proposed ones ofσS,σb and ofαK delivered in another paper, the finishing rolling mechanical properties can be achieved and the calculated results agree well with the measured ones.

关键词： electron structure parameters alloying non-quenched and tempered steel elongation theoretical calculation.

Grasping Opportunities And Forging Ahead To Establish A Comprehensive International group corporation

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china's Foreign Trade 1997年第11期 15-16页

作者： Liu Deshu, Chairman and President of china national Machinery Import & Export group corporation

The Chinese government officially resumed its exercise of sovereignty over Hong Kong on July 1, 1997. On this historic occasion, the china national Machinery Import and Export corporation officially renamed itself as the china Machinery Import and Export group corporation, with the approval of the relevant department of the state, and moved into its new office building. The change of name marks the progress it has achieved in a the course of exploring the establishment of a modern enterprise system. It was designated by the State Council in 1994 as one of the first group of 100 enterprises in china to introduce the modern enterprise system on a trial *** particular since 1995, when its

关键词： Grasping Opportunities And Forging Ahead To Establish A Comprehensive International group corporation

Model test on sand retaining wall reinforced with denti-strip inclusions

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Science china(Technological Sciences) 2008年第12期51卷 2259-2269页

作者： ZHANG MengXi1 & ZHOU Huai1,2 1 Department of Civil Engineering,Shanghai University,Shanghai 200072,china 2 Shanghai Chengtou City Land(group) corporation,Shanghai 200438,china Department of Civil Engineering Shanghai University Shanghai Chengtou City Land (group) corporation

In conventional reinforced soil structures,the reinforcements are often laid hori-zontally in the *** this paper,a new concept of soil reinforced with denti-strip inclusions was proposed and a series of laboratory model tests were carried out on sand retaining wall reinforced with denti-strip *** the horizontal displacements of the facing,the lateral earth pressures acting on vertical elements were measured.A microscopic measurement was performed to investigate the deformation and progressive failure of the sand within model retaining *** on the image analytical technique,the bearing capability and interaction mechanism of reinforced sand retaining wall were *** model of the initial shear failure and potential failure surface were also put *** the experimental results,it is shown that denti-strip inclusions can increase the bearing capability of retaining wall significantly and restrict the facing displacements efficiently,as compared with conventional horizontal reinforcement.

关键词： denti-strip inclusions reinforced sand retaining wall model test horizontal facing displacements lateral earth pressure on denti-elements failure surface

Solving the input data in error correc-tion of optical fabrication by finite Fourier coefficient algorithm

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Science china(Technological Sciences) 2006年第1期49卷 50-60页

作者： CHENG Haobo1,2, SUN Guozheng3 & FENG Zhijing2 1. Department of Optical Engineering, Beijing Institute of Technology, Beijing 100081, china 2. Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, china 3. china North Industries group corporation, Beijing 100089, china Department of Optical Engineering Beijing Institute of Technology Department of Precision Instruments and Mechanology Tsinghua University china North Industries group corporation

A free-form lens (FFL) is a special surface that is difficult to be fabricated. FFL are usually fabricated by computer-controlled optical surfacing (CCOS) technique. During CCOS, the material removal amount is determined by the unit removal function (URF) convoluting with the input data――the dwell time. When the removal amount and the URF are known, how to solve the input data involves the special algorithm――deconvolution. Usually, the input data are solved by virtue of low pass filter or iterative methods. However, an approximation solution would destroy the machining stability nec-essary to perform precisely CCOS. In this paper, to solve the input data, a new method that is based on the finite Fourier coefficient is put forward. It can give a continuous and accurate solution for fabricating choice. Several parameters are simulated, which influ-ence the process of CCOS, and evaluating on the effect of the method is also carried out. Experimental results verify that this method is suitable for guiding the manufacturing of high precision FFL.

关键词： optical fabrication, computer controlled optical surfacing, free-form lens, finite Fourier coefficient, error correction.

Impact of typical environments in china’s western mountainous areas on the durability of railway concrete:a review

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Railway Sciences 2024年第5期3卷 650-669页

作者： Jiahe Wang Yanbin Tan Huajian Li Xinhua Zhong Jiaxuan Wang Yu Gao china Academy of Railway Sciences corporation Limited Railway Engineering Research InstitutionBeijingChina and State Key Laboratory of High Speed Railway Track SystemBeijingChina

Purpose–This study aims to analyze the impact mechanism of typical environments in china’s western mountainous areas on the durability of railway concrete and propose measures to improve ***/methodology/approach–With the continuous promotion of infrastructure construction,the focus of china’s railway construction has gradually shifted to the western *** four typical environments of large temperature differences,strong winds and dryness,high cold and low air pressure unique to the western mountainous areas of china have adverse effects on the durability of typical railway structure concrete(bridges,ballastless tracks and tunnels).This study identified the characteristics of four typical environments in the western mountainous areas of china through on-site *** impact mechanism of the four typical environments on the durability of concrete in different structural parts of railways has been explored through theoretical analysis and experimental research;Finally,a strategy for improving the durability of railway concrete suitable for the western mountainous areas of china was ***–The daily temperature difference in the western mountainous areas of china is more than twice that of the plain region,which will lead to significant temperature deformation and stress in the multi-layered structure of railway ballastless *** will result in *** wind speed in the western plateau region is about 2.5 to 3 times that of the plain region,and the average annual rainfall is only 1/5 of that in the plain *** drying effect on the surface of casting concrete will significantly accelerate its cracking process,leading to serious durability *** environmental temperature in the western mountainous areas of china is generally low,and there are more freeze-thaw cycles,which will increase the risk of freeze-thaw damage to railway *** environmental air pressure in the western plateau region is only 60%of that in

关键词： Western mountainous areas Concrete Durability Environment