受载复合煤岩破裂表面红外辐射温度变化规律

doi:10.16265/j.cnki.issn1003-3033.2017.01.020

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (1): 110-115.doi: 10.16265/j.cnki.issn1003-3033.2017.01.020

受载复合煤岩破裂表面红外辐射温度变化规律

李鑫^1,2 讲师, 杨桢^1,3 副教授, 代爽¹, 邱彬¹ 副教授, 辛元¹

1 辽宁工程技术大学电气与控制工程学院,辽宁葫芦岛 125105
2 辽宁工程技术大学矿业学院,辽宁阜新 123000
3 辽宁工程技术大学力学与工程学院,辽宁阜新 123000

收稿日期:2016-09-19 修回日期:2016-11-24 发布日期:2020-11-23
作者简介:李鑫 (1981—),女,辽宁阜新人,博士,讲师,主要从事煤矿安全监测与监控方面的研究。E-mail: lixinyz@126.com。
基金资助:
国家自然科学基金青年基金资助(51604141,51204087);辽宁省教育厅基金资助(LJYL016)。

Variation routine of surface infrared radiation temperature of composite coal rock in fracture under load

LI Xin^1,2, YANG Zhen^1,3, DAI Shuang¹, QIU Bin¹, XIN Yuan¹

1 School of Electrical and Engineering Control, Liaoning Technical University, Huludao Liaoning 125105, China
2 School of Mining, Liaoning Technical University, Fuxin Liaoning 123000, China
3 School of Mechanics and Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China

Received:2016-09-19 Revised:2016-11-24 Published:2020-11-23

摘要/Abstract

摘要： 为实现对煤岩动力灾害的非接触式预测预报,采用红外热成像仪,研究由煤和顶底板岩组成的复合煤岩与泥岩受载变形直至破裂过程中表面红外辐射温度的演化特征。建立煤、顶底板岩、泥岩温度与应力、应变之间的拟合方程。研究结果表明,复合煤岩和泥岩试样加载产生红外辐射的物理机制一致,均存在热弹效应和摩擦热效应。煤岩破裂失稳红外辐射前兆表现为阶跃式、台阶式上升趋势;加载速率增大,温度变化更加明显,与应力、应变成较强线性正相关关系,其中,煤样红外辐射温度变化最大,顶底板岩的红外辐射温度变化相对较小;泥岩红外辐射温度有阶跃式、突增型上升趋势,温度变化较煤岩明显,其与应力、应变的相关性稍高于煤样和顶底板岩。

关键词: 复合煤岩, 变形破裂, 红外辐射温度, 摩擦热效应, 热弹效应

Abstract: In order to realize the non-contactprediction of the coalrock dynamic disaster by infrared radiation and ensure coal mine safety, the evolution characteristics of surface infrared radiation temperature of composite coal rock and mudstonesample during deformation and fracturing were studied by infrared thermal imager. Fitting equation between temperature, stress and strain of coal, roofslab,floorslab and mudstone were established. The results show that there are thermoelastictand frictional hea effects during continuous loading tests of both samples.The physical mechanism is the same. Infrared radiation precursor of composite coal rock in fracture instability has been manifested as a rise in step. When the loading rate increasing, the temperature increases also.The temperature changes and stress or strain have a strong positive linear correlation. Infrared radiation temperature precursor of mudstone has been manifested as a trend of step and type spurt upward. The temperature change is more obvious than the coal rock. The correlation is slightly higher than the composite coal rock.

Key words: composite coal rock, deformation and fracture, infrared radiation temperature, frictional heat effect, thermoelastic effect

中图分类号:

X936

李鑫, 杨桢, 代爽, 邱彬, 辛元. 受载复合煤岩破裂表面红外辐射温度变化规律[J]. 中国安全科学学报, 2017, 27(1): 110-115.

LI Xin, YANG Zhen, DAI Shuang, QIU Bin, XIN Yuan. Variation routine of surface infrared radiation temperature of composite coal rock in fracture under load[J]. China Safety Science Journal, 2017, 27(1): 110-115.

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受载复合煤岩破裂表面红外辐射温度变化规律

Variation routine of surface infrared radiation temperature of composite coal rock in fracture under load

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