|Table of Contents|

Mechanical Analysis of Instability of Coal Pillar and Roof System in Goaf(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2007年01期
Page:
31-36
Research Field:
Publishing date:
2007-03-20

Info

Title:
Mechanical Analysis of Instability of Coal Pillar and Roof System in Goaf
Author(s):
HE Guang-ling1;  HONG Fang2;  WANG Yan-ping3
1. School of Civil Engineering, Tongji University, Shanghai 200092, China; 2. Department of Civil Engineering, Fujian University of Technology, Fuzhou 350014, Fujian, China; 3. Beijing Institute of the Second Nuclear Industry, Beijing 100840, China
Keywords:
goaf;  coal pillar and roof interaction system;  instability;  catastrophe theory;  mechanical analysis
PACS:
TU822.1
DOI:
-
Abstract:
Based on the Winkler's hypothesis, the stiff roof was assumed as an elastic beam.It was totally different with the conventional idea that the stiff roof was assumed as an elastic plate, and the coal pillars were equal to continuously and uniformly distributed support springs.Then, the coal pillar and roof interaction system was formed. It was also assumed that the coal pillar was a strain-softening medium, and the damage constitutive model could be described by the approximate Weibull's distribution. Authors presented the instability mechanism of coal pillar and roof interaction system by using the plate mechanics and the nonlinear dynamics theory, then, the catastrophe mechanism of the system instability was gotten and the mathematical criterion and mechanical condition were given. Finally, taking Majiliang coal mine as an engineering example, the results show that a good agreement exists between the theoretical analysis vaule and engineering real test data which provides an important reference for the further research of the coal pillar and roof interaction system and constitution of relevant codes.

References:

[1] 章梦涛.冲击地压失稳理论及数值计算[J].岩石力学与工程学报,1987,6(3):197-204. ZHANG Meng-tao.Instability Theory and Numerical Simulation of Rock Burst[J].Chinese Journal of Rock Mechanics and Engineering,1987,6(3):197-204.
[2]章梦涛,徐曾和,潘一山.冲击地压和突出的统一失稳理论[J].煤炭学报,1991,16(4):48-53. ZHANG Meng-tao,XU Zeng-he,PAN Yi-shan.Uniform Instability Theory for Rock Burst and Bump[J].Journal of China Coal Society,1991,16(4):48-53.
[3]潘 岳.矿井断层冲击地压的折迭突变模型[J].岩石力学与工程学报,2001,20(1):43-48. PAN Yue.Fold Catastrophe Model of Mining Fault Rock Burst[J].Chinese Journal of Rock Mechanics and Engineering,2001,20(1):43-48.
[4]谭云亮.矿山岩层运动非线性动力学特征研究[D].沈阳:东北大学,1996. TAN Yun-liang.Research on the Nonlinear Dynamic Characteristic of Mining Overburden Movement[D].Shenyang:Northeast University,1996.
[5]尹光志,代高飞,万 玲,等.岩石微裂纹演化的分岔混沌与自组织特征[J].岩石力学与工程学报,2002,21(5):635-639. YIN Guang-zhi,DAI Gao-fei,WAN Ling,et al.Characteristics of Bifurcation,Chaos and Self-organization of Evolution of Micro-cracks in Rock[J].Chinese Journal of Rock Mechanics and Engineering,2002,21(5):635-639.
[6]徐曾和,徐小荷,唐春安.坚硬顶板下煤柱岩爆的尖点突变理论分析[J].煤炭学报,1995,20(5):485-491. XU Zeng-he,XU Xiao-he,TANG Chun-an.Analysis of a Cusp Catastrophe Bump of Coal Pillar Under Hard Rocks[J].Journal of China Coal Society,1995,20(5):485-491.
[7]秦四清,王思敬.煤柱-顶板系统协同作用的脆性失稳与非线性演化机制[J].工程地质学报,2005,13(4):437-446. QIN Si-qing,WANG Si-jing.Instability Leading to Rockbursts and Nonlinear Evolutionary Mechanisms for Coal-pillar-and-roof System[J].Journal of Engineering Geology,2005,13(4):437-446.
[8]俞茂宏,ODA Y,盛 谦,等.统一强度理论的发展及其在土木水利等工程中的应用和经济意义[J].建筑科学与工程学报,2005,22(1):24-41. YU Mao-hong,ODA Y,SHENG Qian,et al.Development of Unified Strength Theory and Its Applications in Civil Engineering and Its Economic Significance[J].Journal of Architecture and Civil Engineering,2005,22(1):24-41.
[9]刘 忠,沈蒲生,陈 铖.惯性荷载和地震荷载作用下单桩横向非线性动力响应简化分析[J].中国公路学报,2005,18(3):66-69. LIU Zhong,SHEN Pu-sheng,CHEN Cheng.Simplified Analysis for Lateral Nonlinear Dynamic Response of Single Pile Under Inertial and Seismic Loads[J].China Journal of Highway and Transport,2005,18(3):66-69.
[10]赵明华,曾昭宇,刘晓明,等.考虑轴向横向荷载共同作用的基桩可靠度[J].建筑科学与工程学报,2005,22(2):57-60. ZHAO Ming-hua,ZENG Zhao-yu,LIU Xiao-ming,et al.Reliability of Pile Foundation Under Vertical and Lateral Loads[J].Journal of Architecture and Civil Engineering,2005,22(2):57-60.
[11]徐芝伦.弹性力学:下册[M].3版.北京:高等教育出版社,1992. XU Zhi-lun.Elasticity Mechanics:Volume 2[M].3rd ed.Beijing:Higher Education Press,1992.
[12]易伟建,杨随新.软土地基上的土-结构动力相互作用[J].建筑科学与工程学报,2005,22(2):61-65. YI Wei-jian,YANG Sui-xin.Soil-structure Dynamic Interaction Based on Soft Soil Foundation[J].Journal of Architecture and Civil Engineering,2005,22(2):61-65.
[13]吴建营,李 杰.混凝土弹塑性损伤本构关系统一模型[J].建筑科学与工程学报,2005,22(4):15-21. WU Jian-ying,LI Jie.Unified Elasto-plastic Damage Constitutive Relations Model for Concrete[J].Journal of Architecture and Civil Engineering,2005,22(4):15-21.
[14]钱鸣高,石平五.矿山压力与岩层控制[M].北京:中国矿业大学出版社,2003. QIAN Ming-gao,SHI Ping-wu.Mining Pressure and Strata Control[M].Beijing:China University Press of Mining and Technology,2003.
[15]派克R,根勃尔 W L.钢筋混凝土板[M].上海:同济大学出版社,1992. PARK R,GAMBE W L.Reinforced Concrete Plate[M].Shanghai:Tongji University Press,1992.
[16]HUDSON J A,FAIRHURST C.Tensile Strength,Weibull's Theory and a General Statistical Approach to Rock Failure[C]//TEENI M.The Proceedings of the Southampton 1969 Civil Engineering Materials Conference:Part 2.London:Wiley-interscience,1971.
[17]潘一山,章梦涛.用突变理论分析冲击矿压发生的物理过程[J].阜新矿业学院学报,1992,11(1):12-18. PAN Yi-shan,ZHANG Meng-tao.Analysis on the Physical Process of Rock Bursts by Catastrophe Theory[J].Journal of Fuxin Mining Institute,1992,11(1):12-18.
[18]QIN Si-qing,WANG Si-jing,LONG Hui,et al.A new Approach to Estimating Geo-stresses from Laboratory Kaiser Effect Measurement[J].International Journal of Rock Mechanics and Mining Science,1999,36(8):1 073-1 077.
[19]仪垂祥.非线性科学及其在地学中的应用[M].北京:气象出版社,1995. YI Chui-xiang.Nonlinear Science and Its Application in Geotechnology[M].Beijing:China Meteorological Press,1995.
[20]宋永津.控制煤层坚硬难冒顶板技术[M].北京:煤炭工业出版社,2001. SONG Yong-jin.The Technology of Controlling Coal Stiff Roof Difficult to Cave[M].Beijing:China Coal Industry Publishing House,2001.

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Last Update: 2007-03-20