松散煤体热物性测试及其温度场分布规律研究
详细信息    本馆镜像全文|  推荐本文 |  |   获取CNKI官网全文
摘要
我国目前煤矿安全生产形势不容乐观,据统计有50%左右的矿井开采有自然发火危险煤层,我国国有重点煤矿的自然发火率可达0.2次/Mt以上,地方煤矿还要严重。煤自燃火源不能迅速、准确定位是造成火灾重大损失的重要原因之一。
     针对目前煤炭自燃火源定位技术研究中所需的松散煤体的导热系数等热物性参数不能准确测定(误差大)、松散煤体的温度场分布规律及其影响因素未进行深入研究的现状,开展了松散煤体热物性参数测试方法与测定系统、松散煤体的温度场分布规律及其影响因素的深入研究,为实现对煤炭自燃火源的准确定位奠定基础。
     本论文在对现有测定方法和测定装置结构进行较全面调研分析的基础上,研究并提出了同时测算松散煤体导热系数、导温系数和比热容的新方法;设计并建造了智能化的松散煤体热物性测试系统,并利用测试系统研究了导热系数等热物性随温度、含水率、空隙率等主要影响因素的变化规律;在对松散煤体温度场进行理论研究的基础上,在地面建立了大型(4×2.4×1.5m)松散煤体的试验煤堆,利用人工热源(50℃~350℃)对其不同高温热源的温度场分布规律及其影响因素进行试验研究。
     通过测试系统的调试和应用表明,系统实现了自动控温、自动采集数据、自动判断数据有效性、自动处理数据;在大试样量条件下,热物性参数测试结果的可重复误差小于1%;松散煤体的温度场试验模拟了自燃热源温度从50℃到350℃时不同距离、不同时间的温度场变化规律,为温度法进行火源定位技术提供依据。
     基于传热学理论,建立松散煤体温度场数学解析模型。据此,计算的温度场结果与试验数据基本吻合、利用煤堆试验数据对松散煤体进行热物性参数估计的结果与系统测试数据基本相符。
The current situation of coal production in our country allows for no optimism, it shows according to statistics that 50% of coal mines have spontaneous combustion hazard seam, the spontaneous combustion broken ratios of key state-owned coal mine can arrive at 0.2 times per Mt, and it is worse with the local coal mines. One of the important reasons is that the source of coal spontaneous combustion can not located rapidly and accurately, which leads to a great loss.
     Accoding to the status that the thermophysical parameters of loose coal needed for the location of coal spontaneous combustion heat source is difficult to be measured accurately and distribution of temperature field in loose coal and its influencing factors are not yet intensively researched, the measuring method and measuring system of loose coal thermophysical parameters and distribution of temperature field in loose coal and its influencing factors are studied, which offer foundation for accurate locating of coal spontaneous combustion heat source.
     Based on comprehensive research and analysis of existing measuring method and measuring system, a new method of measuring thermal conductivity,thermal diffusivity and thermal capacity for loose coal is put forward, an intelligent loose coal thermophysical properties measuring system is designed and built, and then change of loose coal thermophysical parameters with temperature, water content, voidage is studied. Based on theoretical investigation of loose coal temperature field, experimental coal stockpile(4×2.4×1.5m) is built on the ground, the distribution and influencing factors of temperature field is studied by artificial heat source(50℃~350℃).
     The debugging and practical application of the measuring system show that the auto-controling temperature, auto-data acqusiting, auto-judging data's validity, and auto-processing data are realized.Repeating precision of measurement results for loose coal thermophysical parameters is less than 1%. Distribution of temperature field at different distance and at different time with temperature of heat source from 50℃to 350℃is simulated, which offer foundation for the locating technology of coal spontaneous combustion heat source by the temperature method.
     Based on the theory of heat transfer, mathematical model of loose coal temperature field is built, through which the calculating results of temperature field are in accordance with experimental data and parameter estimating results of loose coal thermophysical are in line with measurement results.
引文
[1]张国枢,戴广龙.煤炭自燃理论与防治实践[M].北京:煤炭工业出版社,2002
    [2]王省身,张国枢.矿井火灾防治[M].北京:中国矿业大学出版社,1990
    [3]张国枢.矿井自燃火源分布规律及其定位技术.矿井通风安全理论与技术(全国通风安全学术会议论文集).北京:中国矿业大学出版社,1999
    [4]罗海珠.我国煤矿火灾预测预报技术的发展和应用.矿井通风安全理论与技术(全国通风安全学术会议论文集).北京:中国矿业大学出版社,1999
    [5]王振平,程卫民,辛嵩等.煤巷煤自燃火源红外探测的影响因素及判别方法[J].煤炭学报.2003,28(6):603-608
    [6]冯小平.采空区高温点位置确定的计算机模拟分析[J].淮南矿业学院学报.1995,15(1):36-41
    [7]谢应明,张国枢.基于通风网络理论的采空区自燃过程数值模拟[J].中国安全科学学报.2003,13(6):12-14
    [8]张辛亥,席光.用于煤自然发火预测的神经网络模型和实验技术[J].西安交通大学学报.2006,40(9):1058-1061
    [9]邓军,徐精彩,文虎.综放采煤法中沿空巷道煤层自然发火预测模型研究[J].煤炭学报.2001,26(1):62-66
    [10]李宗翔,许端平.采空区自然发火“三带”划分的数值模拟研究[J].辽宁工程技术大学学报.2001,21(5):545-548
    [11]B.A.奥西波娃 著.蒋章焰 王传院 译.传热学实验研究[M].北京:高等教育出版社,1982
    [12]杨世铭.传热学[M].北京:高等教育出版社,2007
    [13]ASTM E1530 Guarded Heat Flow Meter Method,Anter Corporation
    [14]国家建筑材料工业局.GB10294-88绝热材料稳态热阻及有关特性的测量-防护热板法[M].北京:中国标准出版社,1989
    [14]Measurement of Thermal Conductivity of Insulations and Low Conductivity Materials.http://www.npl.co.uk
    [15]W.M.Healy,Using Finite Element Analysis to Design a New Guarded Hot Plate Apparatus for Measuring the Thermal Conductivity of Insulating Materials.http://www.ngb-netzsch.com.cn
    [16]Saxenat N S,Aslam C M,Gustafson S E.Effective thermal conductivity of loose granular material[J].J Phys D:App;.Phys,1986(19):1625-1630
    [17]闵凯,刘斌等.导热系数测量方法与应用分析[J].保鲜与加工,2005,(5)6:36-38
    [18]Jurgen Blumm著.曾志强 编译.导热系数测量方法及仪器[J].热分析应用文集(德国耐驰仪器制造有限公司).http://www.netzsch.cn
    [19]Nagasaka Y,Nagashima.A Absolute measurement of the thermal conductivity of electrically conducting liquids by transient hot-wire method[J].J Phys ESci Instrum,1981,14:1435-1440
    [20]Assael M J,Charitidou E,Nieto de Castro C A.Absolute Measurement of the thermal conductivity of alcohols by the transient hot-wire technique[J].Int thermophys,1988,9
    [21]Menashe J,Wakeham W A.Absolute Measurements of the Thermal Conductivity of liquids as Presure to 500MPa[J].Phys Chem,1981,85
    [22]徐桂转,梁新,岳建芝.利用热线法对松散类生物质导热系数的测试[J].可再生能源.2004,5:23-25
    [23]张忠进,金文桂.果蔬导热系数的测试[J].农业工程学报.1996,12(1):192-195
    [24]丁方圆,潘黎明,于瑶.热线法测定气体导热系数实验的探讨与改进.2004,24(12):39-41
    [25]Alessandro Franco.An apparatus for the routine measurement of thermal conductivity of materials for building application based on a transient hot-wire method[J].Applied Thermal Engineering,2007,27(14-15):2495-2504
    [26]Sujan P.Kulkarni,C.Vipulanandan.Hot Wire Method to Characterize the Thermal Conductivity of Particle-Filled Polymer Grouts Used in Pipe-in-Pipe Application[J].Journal of Testing and Evaluation.2006,34(3):224-231
    [27]Latifa Sassi,Foued Mzali,Abdelmajid Jemni.Hot-Wire Method for Measuring Effective Thermal Conductivity of Porous Media[J].Journal of Porous Media.2005,8(2):97-113
    [28]阎秋会,刘志刚,阴建民.瞬态热线法测量流体导热系数的实验研究[J].西安建筑科技大学学报.1997,29(3):322-325
    [29]Gustafsson S E,Karawacki E,Khan M N.Transient hot stripe method for simultaneously measuring thermal conductivity and thermal diffusivity of solids and fluids[J].Phys D:Appl Phys,1979,12:1411-1421
    [30]Gustafsson S E,Karawacki E,Chohan M A.Thermal transport studies of electrically conducting materials using the transient hot-stripe technique[J].Phys D:Appl Phys,1986,19:727-735
    [31]Gustafsson S E.Thermal plane source techniques for thermal conductivity and thermal diffusivity measurement of solid material[J].Rev Sci Instrum,1991,62(3):797-804
    [32]于帆,张欣欣.热带法测量材料导热系数的实验研究[J].计量学报.2005,26(1):27-29
    [33]陈昭栋.恒流法测定热扩散系数[J].物理实验.2000,20(1):10-12
    [34]Parker J.W,Jenkins J.R.,Butler,P.C.G.I.Flash Method of Determining Thermal Diffusivity,Heat Capacity and Thermal Conductivity[J].Appl.Phys.1961,32pp.1679-1685
    [35]彭担任,李洪震,徐爱建,等.煤系地层热导率测试研究[J].煤炭科学技术.2000,28(9):35-39
    [36]彭担任,赵全富,胡兰文,等.煤与岩石的导热系数研究[J].矿业安全与环保2000,27(6):16-18
    [37]赵永信,杨叔贞,张文仁,等.岩石热导率的温差实验及分析[J].地球物理学进展.1995,10(1):104-113
    [38]帕尔哈提,木太里甫.结焦炭层导热系数测定[J].新疆石油学院学报.2001,13(1):72-76
    [39]李建伟,葛岭梅.松散煤体导热系数测定实验[J].辽宁工程技术大学学报.2004,23(1):4-8
    [40]唐明云,张国枢,张朝举,等.平行热线法测定松散煤体导热系数试验[J].矿业安全与环保.2006,33(5):13-15
    [41]汤其建,张国枢,陈清华.松散煤体导热系数影响因素分析[J].江西煤炭科技,2006,4:24-26
    [42]N.K.VARMA,A.K.SINGH,M.L.GUPTA.In-situ Measurement of Thermal Conductivity in Underground Coal Mines[J].Journal of Mines,Metals & Fuels.2001,1(2):19-25
    [43]陈东生,周嘉源,钱军.混合法测同体比热容仪器的研制.物理实验.2005,25(1):22-24
    [44]赵再春,彭担任.煤的比热测定与结果分析[J].煤矿安全.1996,6:14-17
    [45]彭担任,周福定,胡兰文,等.煤炭质量热容测试分析[J].中国矿业大学学报.2000,29(1):89-92
    [46]Danniel J.Maloney,Ramanathan Ssmpath etc.Heat Capacity Thermal Conductivity Considerations for Coal Particles During the Early Stages of Rapid Heating Combustion and Flame,1999,116:94-104
    [47]张佳丽,刘全润,张如意.煤炭高温比热容的实验研究.中国煤炭.2005,31(2):55-56
    [48]J.Denis N.Pone,Kim A.A.Hein,Glenn B.Stracher.The Spontaneous Combustion of Coal and It's By-products in The Witbank and Sasolburg Coalfields of South Africa.International Journal of Coal Geology.2007,2:124-140
    [49]LI Zong-xiang,HE Bao,JIA Jin-zhang.Study on Numerical Simulation of Spontaneous Combustion Prevention Mechanism by Nitrogen Injection in Goaf.Journal of coal science &engineering(China).2006,12(1):73-78
    [50]Ahmet ARISOY,B.Basil BEAMISH,Edvin CETEGEN.Modelling Spontaneous Combustion of Coal.Turkish Journal of Engineering and Environmental Sciences.2006,30(3):193-201
    [51]G.Continillo,G.Galiero,P.L.Maffettone.Characterization of the Chaotic Dynamics in the Spontaneous Combustion of CoalStockpiles.Twenty-Sixth Symposium(International) on Combustion Vol.One Napoli,CampiPhlegraci,Italy July 28-August 2,1996:1585-1592
    [52]A.Rosema,H.Guan,H.Veld.Simulation of spontaneous combustion,to study the causes of coal fires inthe Rujigou Basin.Fuel.2001,80(1):7-16
    [53]何启林.综放面采空区遗煤自然发火过程动态数值模拟.中国矿业大学学报.2004,33(1):11-14
    [54]J.T.Riley.etc.Establishment of Date Bank on the Self-Heating of Coal.U.S.Department of Transportation OST/University Research Program Washington,D.C
    [55]J.T.Riley.Etc.Observed Changes in the Quality of Coals During Barging.Journal of Coal Quality,1986,4
    [56]张瑞新等.露天煤体自然发火的实验研究[J].中国矿业大学学报,2000,29(3)
    [57]董希琳,鲁广斌.湿煤堆非稳态温度场计算[J].煤炭转化,2000,3
    [58]卢山,孙培雷.煤堆自燃的理论与计算[J].工业锅炉,2004,4:235-238
    [59]李树刚等.地面储煤堆自燃规律的实验研究[J].辽宁工程技术大学学报,2000,3
    [60]文虎.煤自燃全过程实验模拟及高温区域动态变化规律的研究[J].煤炭学报,2004,29(6)
    [61]王补宣,韩礼忠.同时测定绝热材料材料α和λ的常功率平面热源法[J].工程热物理学报,1980,1(1):80-87
    [62]崔萍,方肇洪.改进的常功率平面热源法[J].山东建筑工程学院学报,2001,16(2):48-51
    [63]陈昭栋.平面热源法瞬态测量材料热物性研究[J].电子科技大学学报,2004,33(5):551-554
    [64]陈则詔,郭俊成,贾磊.用平面热源过渡态平板法同时测定烟叶的λ、α和C_P三种热物性[J].中国科学技术大学学报,2002,32(3):309-313
    [65]候镇冰,何绍杰,李恕先.固体热传导[M].上海科学技术出版社,1984:67-85
    [66]余昌铭.热传导及其数值分析[M].北京:清华大学出版社,1982:348-357
    [67]徐士良 编著.QBASIC常用算法程序集[M].北京:清华大学出版社,1998:152-160
    [68]朱法银,梁碧芝.井函数及其级数展开[J].大庆石油学院学报,1994,18(1):114-116
    [69]肖明跃.误差理论与应用[M].北京:计量出版社,1985
    [70]林瑞泰.多孔介质传热传质引论[M].北京:科学出版社,1995
    [71]杨世铭,陶文铨.传热学[M].北京:高等教育出版社,1998
    [72]GB/T 17106.1997,耐火材料导热系数试验方法(平行热线法)[S]
    [73]J.deBoer.The Hot-Wire Technique for The Detemination of High Thermal Conductivity[J].Refract.1980(22)
    [74]于帆,张欣欣.材料热物理性能非稳态测量方法综述[J].宇航计测技术,2006,26(4):23-29
    [75]朱法银,梁碧芝.井函数及其级数展开[J].大庆石油学院学报,1994,18(1)
    [76]J.L.S.Chen,E.R.Ramer.Temperature effects on the thermal diffusivity of coal ash slags.
    [77]Gosset D,Papoular R,Guillois O.Thermal Diffusivity of compacted coal powders[J].Carbon.1996,3:369-373
    [78]N.K.Varma,M.L.GuptaN.K.Varma.In-situ measurement of thermal diffusivity in underground coal mines[J].Journal of Mines,Metals & Fuels.1999,7(8):172-176
    [79]沙定国.误差分析与测量不确定度评定[M].中国计量出版社,2003.
    [80]科勃兰诺娃,BH等.岩石物理性质的测定[M].地质出版社,1959.
    [81]Frank P Incropera,David P Dewitt.Introduction to Heat Transfer[M].New York:School of Mechanical Engineering Purdue Universtiy.1985:508-511
    [82]文虎,许满贵,李莉.煤自燃的热量积聚过程及影响因素分析[J].辽宁工程技术大学学报,2003,22(2):1-4
    [83]卞晓锴,包宗宏,史美仁 采空区温度场模拟及煤自燃状态预测[J].南京化工大学学报,2000,22(2):43-4
    [84]王全友.Matlab在工程数学上的应用[M].中国石油大学出版社,2005
    [85]高光宁.非透明和半透明介质热物性准稳态测量方法[D].北京科技大学硕士论文,1997
    [86]J.V.Beck,K.J.Amold.Parameter Estimation in Engineering and Science.Wiley,New York,1977(Chapter8).
    [87]兖矿集团有限公司.煤炭自燃早期预测预报与火源探测技术[M].煤炭工业出版社,2002
    [88]王家映 编著.地球物理反演理论[M].高等教育出版社,2002
    [89]周明,孙树栋.遗传算法原理及应用[M].国防工业出版社,1999
    [90]赵为平,沈晶体、.堆积煤等效导热系数的实验测定[J].黑龙江电力,1997,19(2):72-74
    [91]张颖,刘艳秋.软计算方法[M].科学出版社,2002
    [92]武良丹,张小凤.基于模拟退火算法的超声回波参数估计[J].应用声学,2007,26(5):313-318
    [93]Demirili R.Model based estimation of ultrasonic echoses:analysis,algorithms,and applications[D].Ph.D paper,Illinois Institute of Technoloty,2001
    [94]王薇,曾光明.用模拟退火算法估计水质模型参数[J].水利学报,2004,6:61-68
    [95]陈伟,张从海.混合模拟退火-遗传算法在参数估计中的应用[J].地理空间信息,2007,5(2):99-101
    [96]F Kuwahara,A Nakayama,H Koyama.A Numerical Study of Thermal Disperision in Porous Media.[J].Journal of Heat Transfer,1996,118:756-761
    [97]胥蕊娜,姜培学.微细多孔介质中对流换热实验研究[J].工程热物理学报,2006,27(5):823-825
    [98]王薇,曾光明.用模拟退火算法估计水质模型参数[J].水利学报,2004,6:61-67
    [99]项宝卫.结构优化中的模拟退火算法研究和应用[D].大连理工大学硕士学位论文,2004
    [100]张颖,刘艳秋.软计算方法[M].科学出版社,2002
    [101]段玉倩,贺家李.遗传算法及其改进[J].电力系统及其自动化学报,1998,3:39-51
    [102]P.Alotto,A.Caiti,G.Molimari,M.Repetto.A Multiquadrica-based Algorithm for the Acceleration of simulated Annealing Optimization Procedures[J].IEEE Trans On Mag,1996,32(3):1198-1201
    [103]HUANG C H,YANG J Y.An inverse problem in simulataneously measuring temperature dependent thermal conductivity and heat capacity[J].Int J Heat Mass Trans,1995,38:3433-3441
    [104]TERROLA P.A method to determine the thermal conductivity from measured temperature profile[J].Int J Heat Mass Trans,1989,32:1430-1452
    [105]王补宣.含湿建筑材料的导热系数[J].工程热物理学报,1983,42:146-152
    [106]ALIFANOV O M.Solution of an inverse problem of heat conductivity by iteration methods[J].J End Phys,1972,26:471-476
    [107]王登刚,刘迎曦.二维稳态导热反问题的正则化解法[J].吉林大学学报,2000,2:56-60
    [108]HUANG C H,CHAO B H.An inverse geometry problem in indentifying irregulur boundary conFig.urations[J].Int J Heat Mass Trans,1997,40:2045-2053
    [109]HUANG C H,OSIZIK M N.Optimal regularization method to determine the unknown strength of a surface heat source[J].IntJ Heat Mass Trans,1991,12:173-178
    [110]HUANG C H,MORGAN K THOMAS H R.The Finite element method in heat transfer analysis[M].New York:Wiley,1996
    [111]Mejias M M,Orlande H R B.A comarision of different parameter estimation techniqures for the identification of thermal conducitivity components of orthotropic solids[A].3~(rd) International Conference on Inverse Problems in Engineering.Port Ludlow,USA:WA,1999
    [112]Sawaf B,Ozisik M N.Determining the constant thermal conductivities of orthotropic materials by inverse analysis[A].International Communicaiton in Heat and Mass Transfer,1995,22(2):201-211
    [113]Mzali F,Sassi F,Jemni A,etc.Optimal experiment design and simultaneous identification of thermo-physical properties of orthotropic solids[A].4~(rd) International Conference on Inverse Problems in Engineering.Port Ludlow,Brazil:Rie de Janedo,2002
    [114]肖庭延,于慎根.反问题的数值解法[M].科学出版社,2003
    [115]Andrieu C,Fretias N D,Doucet A,Gordan M I.An introduction to MCMC for machine learning[J].Machine Learing,2003,50:5-43
    [116]Wang Jingbo,Nicholas Zabaras.Hierarchical Bayesian Models for inverse problems in heat conduction[J].Inverse Problems,2005,21:183-206
    [117]Wang Jingbo,Nichiolas Zabaras.A Bayesian inference approach to the inverse heat condction problem[J].Heat and Mass Transfer,2004,47:3927-3941
    [118]Beck J V,Blackwell B.Comparasion of some inverse heat conduction methods using experimental data[J].Int J.Heat Mass Transfer,1996,39(17):3649-3657
    [119]Beck J V,Arnold K J.Parameter Esitmation in Engineering and Science[M].New York:John Wiley & Sons Inc,1977
    [120]Beck J V,Osaman A M.Sequential esitimation of temperature-dependent thermal properties[J].High Temp.-High Pressrue,1991,23:255-266
    [121]杨冬,陈听宽.热传导计算中的反问题应用研究[J].核动力工程,1997,18(6):553-559
    [122]R Lattes J,Lions L.the Method of quasi-reversibility[J].In:Applications to Partial Differential Equations.New York:American Elseiver,1969
    [123]Miller K.Stabilized quasi-reversibility and other nearly best possible methods for non-well-posed problems[A].in:Symposium on Non-Well-Posed Prblems and Logarithmic Convexity,Lecture Notes in Mathematics,1973,316:161-176
    [124]Gordon W Clark,Seth E Oppenheimer,Quasi-reversibility,Methods for Non-Well-Posed Problems[J].Electronic Journal of Differential Equations,1994,8:1-9
    [125]刘继军.不适定问题的正则化方法及应用[M].科学出版社,2005
    [126]葛美宝,定华,王泽文等.一类抛物型方程反问题的数值解法[J].东华理工学院学报,2006,3(29):283-288
    [127]任常青.热传导方程反问题的数值解法[J].四川理工学院学报,2008,21(3):28-30
    [128]Cannon JR,Lin Y,Xu S.Numerical procedure for the determination of an unknown coefficient in semilinear parabolic partial differential eautions[J].Inverse problems,1994,10:227-243
    [129]Macbain JA,Bendar JB.Existence and uniqueness proprties for one-dimensional magnetotelluric inverse problem[J].J Math Phys,1986,27:645-649
    [130]程荣军,程玉民.带源参数的二维热传导反问题的无网格方法[J].力学学报,2007,39(6):843-847
    [131]王登刚,刘迎曦,李守巨等.非线性二维稳态导热反问题的一种数值解法[J].西安交通大学学报,2000,34(11):49-52
    [132]秦素梅.基于遗传算法的热物性参数估计[D].北京科技大学,2003
    [133]王秀春,智会强等.用遗传算法求解多维导热反问题[J].核动力工程,2005,26(1):23-27
    [134]陈艳,郭庆平.并行遗传算法在导热反问题中的应用[J].计算机与数字工程,2007,35(3):13-16
    [135]路鹏飞,杨长春,郭爱华等.改进的模拟退火算法及其在叠前储层参数反演中的应用[J].地球物理学进展.2008,23(1):104-109
    [136]章国美,朱岳明.基于快速模拟退火算法的混凝土热学参数反演分析[J].水利水电技术.2007,1:56-58
    [137]黄春林,李新,卢玲.基于模拟退火算法的植被参数遥感反演[J].遥感技术与应用.2006,21(4):271-277
    [138]陈伟,张从海.混合模拟退火-遗传算法在参数估计中的应用[J].地理空间信息.2007,5(2):99-101
    [139]王振平,程卫民等.煤巷近距离自燃火源位置的红外探测与反演[J].煤炭学报.2003,28(6):603-608
    [140]平顶山矿务局,淮南矿业学院 采空区火源位置确定课题组.高庄矿采空区火源位置确定研究报告[R].1993.6
    [141]淮南矿业(集团)有限责任公司,安徽理工大学.孔李公司孔集井-140mA1、A3工作面煤炭自燃预防研究[R].2000.8
    [142]王补宣,虞维平.热线法同时测定含湿多孔介质导热系数和导温系数的实验技术[J].工程热物理学报.1986,7(4):381-386
    [143]Carslaw,H.S.and Jaeger,J.C.,Conduction of heat in solid[M].2~(nd) ed.Oxford Press,1959
    [144]Adrian S Sabatt,Y-X Tal,G Liu et al.Effective Thermal Conductivity for Anisotropic Granular Porous Media Using Fractal Concepts.[R].Proc.of National Heat Transfer Conference,1997,11:121-128
    [145]杨述平.激光调制法的热电偶时间常数测量[J].中北大学学报.2007,28(3):246-251
    [146]岳宁芳.松散煤体导热系数的分析[J].矿业安全与环保.2006,6:26-30
    [147]ISO 9984-2.1990.Refractrory materials-determination of thermal conducivity-Part 2:Hot wired Method(parallel)
    [148]张亚静,余先彬.平行热线法测定耐火材料导热系数的理论基础及技术[J].耐火材料.1997,31(1):48-50
    [149]Adrian S Sabatt,Y-X Tal,G Liu et al.Effective Thermal Conductivity for Anisotropic Granular Porous Media Using Fractal Concepts.[R].Proc.of National Heat Transfer Conference,1997,11:121-128
    [150]郁伯铭.多孔介质输运性质的分形分析研究进展[J].力学进展.2003,33(3):333-346
    [151]Adler P M,Thovert J F.Transport in Porous Media[J].Fractal Porous Media 1993,13(1):41-78
    [152]Gouyet J E.Physics and Fractal Structure[M].[s.l.]:Soringer.1996,132-146
    [153]Feder J.Fractals[M].New York:Plenum Press,1983
    [154]陈彦飞,刘兴彦.煤的原始或机械破碎分形规律探讨[J].中州煤炭.1998,2:26-27
    [155]丁涛.爆堆岩石块度分布的分形模型研究[J].辽宁工程技术大学硕士论文.2000
    [156]陈永平,施明恒.应用分形理论的实际多孔介质有效导热系数的研究[J].应用科学学报.2000,18(3):263-267
    [157]徐琳.土壤有效导热系数的分形研究[D].同济大学硕士论文.2004
    [158]程远贵.耐火纤维材料高温热导率的的分形[J].化工学报,2002,53(11):1193-1197
    [159]俞自涛,胡亚才,田甜.木材横纹有效导热系数的分形模型[J].浙江大学学报,2007,41(2):351-355
    [161]朱方龙,张渭源.应急热防护织物有效导热系数的分形模型[J].纺织学报,2008,29(6):39-44
    [162]张新铭,彭鹏,王金灿.基于分形理论的石墨泡沫新材料导热系数[J].重庆大学学报,2004,27(9):109-111
    [163]西门子公司.SIMATICS7-200可编程控制器系统手册[M].北京:国防工业出版社,2000
    [164]许毅.基于PC与S7-200实现自由通信协议的研究[J].武汉理工大学学报,2002(4):512-515
    [165]常斗南.可编程控制器原理.应用.实验[M].北京:机械工业出版社,2003
    [166]贝尔顿.数据处理和误差分析[M].北京:知识出版社,1986
    [167]胡俊宏,杨振巍.基于VB的S7-200与上位机的串行通讯及应用[J].沈阳工业大学学报,2007,29(6):703-706

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700