理论与试验研究

微波辐射坚硬玄武岩升温-损伤-致裂规律研究

  • 陈登红 ,
  • 施伟 ,
  • 王智鹏 ,
  • 汪朝家 ,
  • 袁永强
展开
  • 1.安徽理工大学 矿业工程学院,安徽 淮南 232001;
    2.深部煤炭安全开采与环境保护全国重点试验室,安徽 淮南 232001;
    3.兰州理工大学 土木工程学院,兰州 730000
陈登红(1986—),男,安徽潜山人,教授,博士,博士生导师,主要从事微波辅助破岩、深井巷道控制与绿色充填开采等教学与研究。E-mail:ahhncdh@163.com
施伟(2000—),男,安徽淮南人,硕士生,主要从事微波辅助破岩等方面的研究工作。E-mail: sxw18255480686@163.com

收稿日期: 2025-04-10

  网络出版日期: 2025-10-17

基金资助

国家自然科学基金(51974008);智能采矿工程新建专业质量提升项目(2022xjzlts008);省级研究生联合培养示范基地(2022lhpysfjd037);安徽理工大学研究生创新基金(2023CX2036)

Study on Heating-Damage-Cracking Regularity of Microwave Irradiation of Hard Basalt

  • Chen Denghong ,
  • Shi Wei ,
  • Wang Zhipeng ,
  • Wang Chaojia ,
  • Yuan Yongqiang
Expand
  • 1. School of Mining Engineering, Anhui University of Science and Technology, Huainan, Auhui 232001, P. R. China;
    2. State Key Laboratory for Safe Mining of Deep Coal Resources and Environment Protection, Huainan, Anhui 232001, P. R. China;
    3. School of Civil Engineering, Lanzhou University of Science and Technology, Lanzhou 730000, P. R. China

Received date: 2025-04-10

  Online published: 2025-10-17

摘要

对微波辐射前后的玄武岩试样进行波速测试和单轴抗压试验,结合扫描电镜试验和宏微观裂隙分析探究了微波辐射岩石升温-损伤-致裂的关联性机制。结果表明:在1.4 kW微波作用下试件两端先迅速升温,随后试件中部再缓慢升温,在空间上呈中间低两端高的双峰状分布;微波加热后试件纵波波速随着辐射时间的增加逐渐降低,损伤因子和强度折损系数随着辐射时间增加呈阶段性上升趋势,波速损伤因子拐点区间为160~180 s,强度折损系数拐点区间为160~200 s,“拐点”之后损伤因子进入平台期,不再随辐射时间的增加有较大变化;微波加热导致的试件内与外、上与下的不均匀温度分布,使试件产生了微裂纹,其裂纹扩展可分为3个阶段:起裂阶段(0~160 s)、裂纹扩展阶段(160~240 s)、崩裂破坏阶段(300 s后),在波速损伤因子与强度折减因子陡增的阶段观察到的裂纹扩展最为显著。研究成果可为类似条件下硬岩微波辐射提供参考。

本文引用格式

陈登红 , 施伟 , 王智鹏 , 汪朝家 , 袁永强 . 微波辐射坚硬玄武岩升温-损伤-致裂规律研究[J]. 地下空间与工程学报, 2025 , 21(5) : 1544 -1553 . DOI: 10.20174/j.JUSE.2025.05.08

Abstract

Wave velocity and uniaxial compressive tests were performed on basalt specimens before and after microwave radiation. The correlation mechanism between heating, damage, and cracking in microwave-irradiated rocks was investigated by combining scanning electron microscope tests with macro- and microfracture analysis. The results show that: Under 1.4 kW microwave irradiation, the two ends of the specimen heated up rapidly at first, followed by slower heating in the middle, resulting in a bimodal temperature distribution with higher temperatures at the ends and lower temperatures in the center. After microwave heating, the longitudinal wave velocity of the specimen gradually decreased with increasing radiation time. Both the damage factor and strength loss coefficient increased progressively with radiation time. The inflection point for the damage factor in wave velocity occurred between 160 and 180 seconds, and the inflection point for the strength loss coefficient was between 160 and 200 seconds. After the “inflection point”, the damage factor reached a plateau and no longer exhibited significant changes with continued radiation. The inhomogeneous temperature distribution within the specimen—due to the microwave heating—induced microcracks, and crack expansion occurred in three stages: crack initiation (0~160 s), crack expansion stage (160~240 s), and collapse and damage stage (after 300 s). The most significant crack expansion occurred during the steep increase in both the damage factor of wave velocity and the strength loss coefficient. The findings of this study can provide valuable insights and references for microwave radiation effects on hard rocks under similar conditions.

参考文献

[1] 陈登红,袁永强,汤允迎.微波技术辐射岩石试验探讨与成孔应用研究进展[J].科学技术与工程,2022,22(22): 9447-9455.(Chen Denghong,Yuan Yongqiang,Tang Yunying. Research progress on experimental discussion and pore-forming application of microwave radiation rock[J]. Science Technology and Engineering,2022,22(22): 9447-9455. (in Chinese))
[2] 喻清,丁德馨,张炬,等.微波辐照技术在矿业中的应用现状及发展趋势[J].黄金科学技术,2017,25(1):112-120.(Yu Qing, Ding Dexin, Zhang Ju, et al. Application status and development trend of microwave radiation technology in Mining[J].Gold Science and Technology, 2017, 25(1): 112-120. (in Chinese))
[3] 寇青军,方建军,张铃,等.微波技术在矿石粉碎中应用的研究进展[J].矿产保护与利用,2019,39(4):172-178.(Kou Qingjun,Fang Jianjun,Zhang Ling,et al. Research progress in application of microwave technology in ore crushing[J]. Conservation and utilization of mineral resources,2019,39(4): 172-178. (in Chinese))
[4] 邵珠山,魏玮,陈文文,等.微波加热岩石与混凝土的研究进展与工程应用[J].工程力学,2020,37(5):140-155, 165.(Shao Zhushan, Wei Wei, Chen Wenwen, et al. Research progress and industrial applications of microwave heating processing on rock and concrete[J]. Engineering Mechanics, 2020, 37(5): 140-155,165. (in Chinese))
[5] 卢高明,李元辉,HASSANI Ferri,等.微波辅助机械破岩试验和理论研究进展[J].岩土工程学报,2016,38(8): 1497-1506.(Lu Gaoming, Li Yuanhui, Ferri H. Review of theoretical and experimental studies on mechanical rock fragmentation using microwave-assisted approach[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(8): 1497-1506. (in Chinese))
[6] 陈方方,祁培培,张志强.三角形矿物尖锐程度对微波照射岩石效果的影响[J].地下空间与工程学报, 2021, 17(2): 390-397, 438.(Chen Fangfang, Qi Peipei, Zhang Zhiqiang. Influence of the sharpness of triangular minerals on the effect of microwave irradiation on rocks[J]. Journal of Underground Space and Engineering,2021,17(2):390-397, 438. (in Chinese))
[7] 田军,卢高明,冯夏庭,等.主要造岩矿物微波敏感性试验研究[J].岩土力学,2019,40(6): 2066-2074. (Tian Jun, Lu Gaoming, Feng Xiating, et al. Experimental study on the microwave sensitivity of main rock-forming minerals[J]. Rock Soil Mech,2019, 40(6):1-9. (in Chinese))
[8] 李帅远,卢高明,洪开荣,等.岩石介电特性及微波加热升温规律分析[J].地下空间与工程学报,2023,19(5):1489-1496.(Li Shuaiyuan, Lu Gaoming, Hong Kairong, et al. Analysis of dielectric properties of rock and warming law by microwave heating[J]. Journal of Underground Space and Engineering,2023,19(5):1489-1496. (in Chinese))
[9] 卢高明,冯夏庭,李元辉,等.多模谐振腔对赤峰玄武岩微波致裂效果研究[J].岩土工程学报,2020,42(6):1115-1124.(Lu Gaoming, Feng Xiating, Li Yuanhui, et al. Effect of microwave-induced fracturing of Chifeng basalt by a multi-mode cavity[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(6): 1115-1124. (in Chinese))
[10] Hartlieb P,Toifl M, Kuchar F, et al. Thermo-physical properties of selected hard rocks and their relation to microwave-assisted comminution[J]. Minerals Engineering, 2016, 91: 34-41.
[11] Lu G M, Feng X T, Li Y H, et al. Experimental investigation on the effects of microwave treatment on basalt heating, mechanical strength, and fragmentation[J]. Rock Mechanics and Rock Engineering, 2019, 52: 2535-2549.
[12] Lu G M, Feng X T, Li Y H, et al. The microwave-induced fracturing of hard rock[J]. Rock Mechanics and Rock Engineering, 2019, 52: 3017-3032.
[13] Hassani F, Nekoovaght P M, Radziszewski P, et al. Microwave assisted mechanical rock breaking[A]//ISRM[C]. Congress. ISRM, 2011: ISRM-12CONGRESS-2011-379.
[14] 卢高明, 周建军, 张兵, 等. 循环荷载下微波照射玄武岩的损伤变形与能量特征[ J]. 隧道建设(中英文), 2020, 40 (11): 1578.(Lu Gaoming, Zhou Jianjun, Zhang Bing, et al. Damage, deformation and energy characteristics of basalt after microwave irradiation subjected to cyclic loading[J]. Tunnel Construction, 2020, 40(11): 1578. (in Chinese))
[15] 邵珠山,吴丹丹,袁媛,等. 多模微波场中玄武岩加热及内部损伤机理研究[J]. 应用力学学报,2022,39(1) : 129-136.(Shao Zhushan,Wu Dandan,Yuan Yuan,et al. Research on heating characteristics and internal damage emergence of basalt in multimode microwave field[J]. Chinese journal of applied mechanics,2022,39(1): 129-136. (in Chinese))
[16] Liu Y P, Zhang S Y, Zhang H F. Advances on mineral genesis of chlorite: a review[J]. Advances in Geosciences, 2016, 6(3): 264-282.
[17] 陈登红,汪朝家,王智鹏,等.水对石英砂岩微波辐射升温损伤的影响规律研究[J].金属矿山,2023(5):155-164.(Chen Denghong, Wang Chaojia, Wang Zhipeng, et al. Study on the influence law of water on microwave radiation heating damage of quartz sandstone [J]. Metal Mining, 2023(5): 155-164. (in Chinese))
[18] 陈登红,王智鹏,袁永强,等.较低功率微波辐射坚硬石灰岩损伤路径优化研究[J].采矿与安全工程学报,2022,39(5):1021-1032, 1040.(Chen Denghong, Wang Zhipeng, Yuan Yongqiang, et al. Study on damage path optimization of hard limestone irradiated by low power microwave [J]. Journal of Mining and Safety Engineering, 2022, 39 (5): 1021-1032, 1040. (in Chinese))
[19] Liang C G, Guo Z S, Yue X, et al. Microwave-assisted breakage of basalt: A viewpoint on analyzing the thermal and mechanical behavior of rock[J]. Energy, 2023, 273: 127225.
[20] 胡国忠,朱杰琦,朱健,等.微波辐射下页岩微结构的损伤特性与致裂效应[J].煤炭学报,2020,45(10) : 3471-3479.(Hu Guozhong, Zhu Jieqi, Zhu Jian, et al. Fracturing effect and damage behaviors for microstructure in shale under microwave irradiation[J]. Journal of China Coal Society,2020,45(10): 3471-3479. (in Chinese))
[21] 陈登红,王智鹏,袁永强,等.较低功率微波辐射三类硬岩失水升温损伤规律与声发射特征[J].岩石力学与工程学报,2023,42(1): 168-182.(Chen Denghong, Wang Zhipeng, Yuan Yongqiang, et al. Damage law and acoustic emission characteristics of three kinds of hard rocks under low power microwave irradiation [J]. Journal of Rock Mechanics and Engineering, 2023, 42 (1): 168-182. (in Chinese))
文章导航

/