[1]戴 俊,师百垒,杨 凡,等.微波照射下岩石损伤CT试验研究[J].西安科技大学学报,2016,(05):616-620.[doi:10.13800/j.cnki.xakjdxxb.2016.0502]
 DAI Jun,SHI Bai-lei,YANG Fan,et al.CT test of rock damage under the microwave irradiation[J].Journal of Xi'an University of Science and Technology,2016,(05):616-620.[doi:10.13800/j.cnki.xakjdxxb.2016.0502]
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微波照射下岩石损伤CT试验研究(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2016年05期
页码:
616-620
栏目:
出版日期:
2016-09-30

文章信息/Info

Title:
CT test of rock damage under the microwave irradiation
文章编号:
1672-9315(2016)05-0616-05
作者:
戴 俊1师百垒1杨 凡2盛 骁1池佐华1
1.西安科技大学 建筑与土木工程学院,陕西 西安 710054;
2.甘肃煤炭地质勘察院,甘肃 兰州 730000
Author(s):
DAI Jun1SHI Bai-lei1YANG Fan2SHENG Xiao1CHI Zuo-hua1
1.College of Civil and Architectural Engineering,Xi'an University of Science and Technology,Xi'an 710054,China;
2.Gansu Provincial Coal Geological Exploration Institute,Lanzhou 730000,China
关键词:
微波照射 岩石损伤 CT扫描 矿物成分
Keywords:
microwave irradiation rock damage CT scanning minerals
分类号:
TD 921.2
DOI:
10.13800/j.cnki.xakjdxxb.2016.0502
文献标志码:
A
摘要:
为了进一步研究微波照射下岩石内部损伤演化过程,分析微波照射下岩石内部裂纹产生及延伸情况,完善岩石强度劣化机理,采用CT技术对微波照射后不同产地2种花岗岩试件进行扫描,并计算其损伤变量,探讨不同产地2种花岗岩内部矿物成分对微波照射岩石损伤的影响,最后对平山县花岗岩不同含水率试件经微波照射后进行抗剪切试验。结果表明:通过CT探伤设备从细观分析可知,微波照射下岩石损伤是由岩石试件中“危险区域”内吸波矿物引起; 不同产地的花岗岩,引发岩石损伤的“危险区域”不同; 微波照射下岩石内部裂纹是由局部产生并延续扩展整个岩体试件,岩石强度下降是由吸波点劣化,其特性急剧衰变引起; 花岗岩矿物成分中黑云母、角闪石介电常数较大,是主要的吸波矿物; 岩石含水率的增加在微波照射下能加大岩石损伤程度,降低岩石抗剪切强度。CT技术对微波照射下研究岩石裂纹损伤及演化提供了一种细观的分析过程。
Abstract:
In order to further study the internal damage evolution process of rock,analyze the production and extension of internal crack in rock under microwave irradiation and perfect the rock strength degradation mechanism,two kinds of different regions granite specimens has been scanned by CT technology after microwave irradiation,the damage variable has been calculated,the influence of the mineral composition of two kinds of different regions granite specimens on rock damage by microwave irradiation has been discussed,and the shear experiment of different moisture content of Pingshanxian granite specimens has been carried out after microwave irradiation.The result of the tests indicates that rock damage is caused by the absorbing mineral of the “danger zone” in rock specimen under microwave irradiation from mesoscopic analysis by CT detection device; the “danger zone” of leading to the rock damage is different from different regions granite; the internal cracks of rock is produced by local and further expand the rock specimen under microwave irradiation,rock strength degradation is caused by degradation of absorbing points,which characteristics decay sharply; biotite and hornblende which has big dielectric constant is the main absorbing mineral in granite mineral composition; the increase of moisture content of rock can increase rock damage degree and reduce the rock shear strength under microwave irradiation.CT technology provides a mesoscopic analysis process of studying crack damage of rock and evolutionary under microwave irradiation.

参考文献/References:

[1] 刘柏禄,潘建忠,谢世勇.岩石破碎方法的研究现状及展望[J].中国钨业,2011,26(1):15-18. LIU Bo-lu,PAN Jian-zhong,XIE Shi-yong.On the research development of rock fragmentation and its prospect[J].China Tungsten Industry,2011,26(1):15-18.
[2] 戴 俊,孟 振,吴丙权.微波照射对岩石强度的影响研究[J].有色金属,2014(3):54-57. DAI Jun,MENG Zhen,WU Bing-quan.Study on impact of rock strength by microwave irradiation[J].Nonferrous Metals,2014(3):54-57.
[3] Kingman S W,Jackson K,Cunbane A.Recent developments in microwave-assisted comminution[J].Mineral Processing,2004(74):71-83.
[4] 李文成,杜雪鹏.微波辅助破岩新技术在非煤矿的应用[J].铜业工程,2011(4):1-4. LI Wen-cheng,DU Xue-peng.Application of microwave-assisted rock breaking in metal mines[J].Copper Engineering,2011(4):1-4.
[5] 戴 俊,吴 涛,曹 东,等.微波照射后钢纤维混凝土强度劣化研究[J].西安建筑科技大学学报:自然科学版,2014,46(1):6-9. DAI Jun,WU Tao,CAO Dong,et al.Study on the strength weakening rule of steel fiber reinforced concrete after microwave irradiation[J].Journal of Xi'an University of Architecture & Technology:Natural Science Edition,2014,46(1):6-9.
[6] 戴 俊,师百垒,吴 涛.微波照射对岩石抗冲击性能的影响[J].河南科技大学学报:自然科学版,2016,37(1):64-67. DAI Jun,SHI Bai-lei,WU Tao.Impact of rock impact resistance by microwave irradiation[J].Journal of Henan University of Science and Technology:Natural Science,2016,37(1):64-67.
[7] QIN Li-ke,DAI Jun.TENG Peng-fei.Study on the effect of microwave irradiation on rock strength[J].Journal of Engineering Science and Technology Review,2015,8(4):91-96.
[8]任建喜,冯晓光,刘 慧.三轴压缩单一裂隙砂岩细观损伤破坏特性CT分析[J].西安科技大学学报,2009,29(3):300-304. REN Jian-xi,FENG Xiao-guang,LIU Hui.Stability analysis for excavated section of shield tunnel[J].Journal of Xi'an University of Science and Technology,2009,29(3):300-304.
[9]葛修润.岩土损伤力学宏细观实验研究[M].北京:科学出版社,2004. GE Xiu-run.Experimental study of macro mesoscopic on ground and soil damage mechanics[M].Beijing: Science Press,2004.

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备注/Memo

备注/Memo:
收稿日期:2016-04-15 责任编辑:刘 洁
基金项目:国家自然科学基金资助(51174159)
通讯作者:戴 俊(1964-),男,贵州安顺人,教授,博士生导师,E-mail:1098437146@qq.com
更新日期/Last Update: 2015-10-30