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金属矿山 ›› 2014, Vol. 43 ›› Issue (06): 1-9.

• 采矿工程 •    下一篇

含水煤岩损伤破坏过程中声发射特征的研究

夏冬1,2,杨天鸿1,2,常宏3   

  1. 1.深部金属矿山安全开采教育部重点实验室,辽宁 沈阳 110819;2.东北大学资源与土木工程学院,辽宁 沈阳 110819;3.河北钢铁集团沙河中关铁矿有限公司,河北 沙河 054100
  • 出版日期:2014-06-16 发布日期:2015-01-07
  • 基金资助:

    * 国家自然科学基金项目(编号:51304036),中央高校基本科研业务费项目(编号:N120601002)。

AE Properties of Moisture-containing Coal and Rock During the Failure Progress

Xia Dong1,2,Yang Tianhong1,2,Chang Hong3   

  1. 1.Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines,Shenyang 110819,China;2.School of Resources & Civil Engineering,Northeastern University,Shenyang 110819,China;3.Shahe Zhongguan Iron Mine Company,Hebei Iron and Steel Group,Shahe 054100,China
  • Online:2014-06-16 Published:2015-01-07

摘要: 岩土工程在施工及运营期间,经常会遇到地下水和施工及运行载荷的共同作用,岩体在地下水和各载荷作用下的力学性能是影响岩土工程长期稳定性的重要因素之一。在收集国内外相关资料的基础上,对含水煤岩在单轴压缩、周期载荷作用、三轴压缩、剪切及拉伸等应力作用下的力学特性及声发射特征等方面进行了综述,对国内外的研究现状进行了回顾与分析,进而总结了含水煤岩力学特性及声发射特征的部分规律。指出随声发射技术在工程岩体稳定性监测领域的广泛应用及试验手段和试验方法的进一步发展,含水煤岩声发射有向真三轴、多场耦合方向发展的趋势,同时随着数值模拟软件及并行技术的快速发展,数值模拟试验将为含水煤岩声发射特征的研究开辟新的途径。

关键词: 含水煤岩, 不同应力路径, 损伤破坏, 声发射

Abstract: During the period of construction and operation,the geotechnical engineering often undergoes the effect of the under-ground water and compression of the construction and operation.And the mechanical property under such condition is one of the major factors affecting the long term stability.The summary was conducted based on both national and international researches,including the mechanical properties of moisture-containing coal and rock under uniaxial compression,cyclic loading,triaxial loading,shearing test and tension test,and its AE properties.The current researches at home and abroad were reviewed and analyzed,and then the laws of mechanical properties and AE characteristics of moisture-containing coal and rock were summarized.It is found that with the wide use of the AE technology in the monitoring of geotechnical engineering stability and the development of various test methods,the AE of containing moisture coal and rock trends to the true triaxial and multi-field coupling.Also,with the fast development of the numerical analysis software and parallel technology, the numerical simulation can be a new way to study the AE properties of containing moisture coal and rock.

Key words: Moisture-containing coal and rock, Different stress paths, Damage, Acoustic emission(AE)