辽宁石油化工大学学报 ›› 2024, Vol. 44 ›› Issue (3): 54-60.DOI: 10.12422/j.issn.1672-6952.2024.03.008

• 石油与天然气工程 • 上一篇    下一篇

加载砂岩破坏能量和红外前兆特征试验研究

蒋睿智1(), 付煜1,2(), 法艳鹏1, 韩宜成1, 赵露雨1, 孙海1,2   

  1. 1.辽宁石油化工大学 土木工程学院,辽宁 抚顺 113001
    2.辽宁省石油化工特种建筑材料重点实验室,辽宁 抚顺 113001
  • 收稿日期:2023-09-02 修回日期:2024-01-03 出版日期:2024-06-25 发布日期:2024-06-17
  • 通讯作者: 付煜
  • 作者简介:蒋睿智(2002-),男,本科生,交通运输专业,从事岩体力学与岩层控制等方面的研究;E-mail:3089448398@qq.com
  • 基金资助:
    辽宁省科技厅博士科研启动基金项目(2021-BS-247);辽宁石油化工大学人才引进科研启动基金项目(2021XJJL-012);国家级大学生创新创业训练计划项目(202310148037)

Experimental Study on the Energy and Infrared Precursors of Failure Sandstone During Loading

Ruizhi JIANG1(), Yu FU1,2(), Yanpeng FA1, Yicheng HAN1, Luyu ZHAO1, Hai SUN1,2   

  1. 1.School of Civil Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China
    2.Liaoning Key Lab of Petrochemical Special Building Materials,Fushun Liaoning 113001,China
  • Received:2023-09-02 Revised:2024-01-03 Published:2024-06-25 Online:2024-06-17
  • Contact: Yu FU

摘要:

红外热成像技术广泛应用于岩石破坏的前兆特征及预警方法研究。然而,红外辐射前兆特征具有多种形式,因此对岩石失稳的准确预警有一定的影响。岩石破坏失稳与应变能的演化存在密切联系,而岩石的红外辐射信息与应变能的耗散、释放有关。若将应变能与红外辐射信息相结合,则可准确地对岩石破坏失稳进行监测预警。以能量演化特征为切入点,采用尖点突变理论确定弹性应变能的释放时间,并将其与红外辐射异常信息相结合,确定了岩石破坏失稳的前兆。结果表明,当弹性应变能骤降时,红外辐射信息也发生突变;通过构建尖点突变模型预测的砂岩弹性应变能释放时间,超前或滞后于红外辐射首次突变时间;可将弹性应变能释放时间附近发生的红外辐射突变作为砂岩的破坏前兆。研究结果可为矿山灾害监测及预警提供一种新思路。

关键词: 破裂, 应变能, 红外辐射, 前兆, 预警

Abstract:

Infrared thermal imaging technology is widely used in the study of precursor characteristics and early warning methods of rock failure. However, infrared radiation precursory features have many forms, so it has certain influence on the accurate early warning of rock instability. The failure and instability of rock are closely related to the evolution of strain energy, and the infrared radiation information of rock is related to the dissipation and release of strain energy. If the strain energy is combined with infrared radiation information, the rock failure and instability can be monitored and warned accurately. Based on this, in this paper, the release time of elastic energy is determined by the cusp mutation theory based on the energy evolution characteristics, which is combined with the infrared radiation anomaly information to determine the precursor of rock failure and instability. The results show that with the sudden drop of the elastic energy curve, the infrared radiation synchronization appears abrupt change. The elastic energy release time of sandstone predicted by constructing the sharp point mutation model can be divided into two situations: leading and lagging the first mutation time of infrared radiation. Taking the elastic energy release time as the standard, the infrared radiation mutation near the sandstone can be regarded as the precursor of sandstone failure. The results can provide a new idea for mine disaster monitoring and early warning.

Key words: Fracture, Strain energy, Infrared radiation, Precursor, Early warning

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引用本文

蒋睿智, 付煜, 法艳鹏, 韩宜成, 赵露雨, 孙海. 加载砂岩破坏能量和红外前兆特征试验研究[J]. 辽宁石油化工大学学报, 2024, 44(3): 54-60.

Ruizhi JIANG, Yu FU, Yanpeng FA, Yicheng HAN, Luyu ZHAO, Hai SUN. Experimental Study on the Energy and Infrared Precursors of Failure Sandstone During Loading[J]. Journal of Liaoning Petrochemical University, 2024, 44(3): 54-60.

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链接本文: https://journal.lnpu.edu.cn/CN/10.12422/j.issn.1672-6952.2024.03.008

               https://journal.lnpu.edu.cn/CN/Y2024/V44/I3/54