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[1]齐消寒,宁天,王品,等.微波作用煤岩能量演化规律及辐射损伤-围压约束耦合本构模型研究[J].中国安全生产科学技术,2025,21(11):131-140.[doi:10.11731/j.issn.1673-193x.2025.11.016]
　QI Xiaohan,NING Tian,WANG Pin,et al.Study on energy evolution law and radiation damage-confining pressure coupled constitutive model of microwave-irradiated coal-rock[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2025,21(11):131-140.[doi:10.11731/j.issn.1673-193x.2025.11.016]
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微波作用煤岩能量演化规律及辐射损伤-围压约束耦合本构模型研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
21
期数:
2025年11期
页码:
131-140
栏目:
职业安全卫生管理与技术
出版日期:
2025-11-30

文章信息/Info

Title:
Study on energy evolution law and radiation damage-confining pressure coupled constitutive model of microwave-irradiated coal-rock
文章编号:
1673-193X(2025)-11-0131-10
作者:
齐消寒; 宁天; 王品; 吕强; 张湧
（1.辽宁工程技术大学 安全科学与工程学院，辽宁 葫芦岛 125105;
2.矿山热动力灾害与防治教育部重点实验室，辽宁 葫芦岛 125105）
Author(s):
QI Xiaohan;  NING Tian;  WANG Pin;  LYU Qiang;  ZHANG Yong
（1.Safety Science and Engineering College,Liaoning Technical University,Huludao Liaoning 125105,China;
2.Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education,Huludao Liaoning 125105,China）
关键词:
煤岩力学特性; 微波预处理; 能量演化; 损伤本构模型; 深部煤层稳定性
Keywords:
mechanical properties of coal-rock;  microwave pretreatment;  energy evolution;  damage constitutive model;  deep coal seam stability
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2025.11.016
文献标志码:
A
摘要:
为应对深部煤岩开采中地应力增大与煤层透气性差等瓶颈问题，基于实验研究与理论建模相结合的方法，系统探究微波预处理对煤岩力学特性及能量演化规律的影响机制，采用400 W微波对贫煤进行预处理，结合三轴压缩实验分析不同围压（3 MPa，6 MPa，9 MPa）下微波处理煤样的偏应力-应变关系、体应变分布及能量耗散特征；基于Weibull分布与Drucker-Prager准则构建微波损伤本构模型，进一步开展15 MPa与21 MPa高围压实验用于验证模型在深部条件下的适用性。研究结果表明：微波辐射通过热效应与介电效应诱导煤体内部微裂隙扩展，从而显著降低煤样的弹性模量、峰值强度及残余强度等力学参数；此外，理论模型通过引入微波损伤修正系数与围压抑制项，模拟了微波预处理煤样的非线性力学响应。研究结果可为微波辅助煤层气高效开发、深部煤岩稳定性调控提供理论与技术参考。
Abstract:
In order to address the bottlenecks of increased in-situ stress and poor permeability in deep coal-rock mining,this study systematically investigates the mechanism of microwave pretreatment on the mechanical properties and energy evolution laws of coal-rock using a combined approach of experimental research and theoretical modeling.Coal samples with low rank were subjected to a 400 W microwave pretreatment.Triaxial compression experiments were then conducted to analyze the deviatoric stress-strain relationship,the volumetric strain distribution,and energy dissipation characteristics of the microwave-treated coal samples under different confining pressures (3 MPa,6 MPa,9 MPa).A constitutive model for the microwave-induced damage was established based on the Weibull distribution and the Drucker-Prager criterion.Furthermore,high-confining-pressure experiments at 15 MPa and 21 MPa were carried out to validate the model’s applicability under deep mining conditions.The results indicate that microwave radiation induces the propagation of micro-cracks within the coal matrix through thermal and dielectric effects,significantly reducing mechanical parameters such as the elastic modulus,peak strength,and residual strength of the coal samples.Additionally,by introducing a microwave-damage correction coefficient and a confining pressure suppression term,the theoretical model effectively simulates the nonlinear mechanical response of microwave-pretreated coal samples.These findings provide theoretical and technical references for the efficient development of coalbed methane with microwave assistance and the stability control of deep coal-rock formations.

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备注/Memo

备注/Memo:
收稿日期： 2025-07-27
作者简介： 齐消寒，博士，副教授，主要研究方向为煤层增透理论与技术。
更新日期/Last Update: 2025-12-03