[1]戴 俊,秦立科.微波照射下岩石损伤细观模拟分析[J].西安科技大学学报,2014,(06):652-655.[doi:10.13800/j.cnki.xakjdxxb.2014.0604]
 DAI Jun,QIN Li-ke.Meso-simulation of rock damage under microwave irradiation[J].Journal of Xi'an University of Science and Technology,2014,(06):652-655.[doi:10.13800/j.cnki.xakjdxxb.2014.0604]
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微波照射下岩石损伤细观模拟分析(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2014年06期
页码:
652-655
栏目:
出版日期:
2014-12-08

文章信息/Info

Title:
Meso-simulation of rock damage under microwave irradiation
文章编号:
1672-9315(2014)06-0652-04
作者:
戴 俊秦立科
西安科技大学 建筑与土木工程学院,陕西 西安 710054
Author(s):
DAI JunQIN Li-ke
College of Civil and Architectural Engineering,Xi'an University of Science and Technology,Xi'an 710054,China
关键词:
微波辅助破岩 岩石颗粒 热力耦合 数值模拟
Keywords:
microwave-assisted breakage rock particle thermal-mechanical coupling numerical modeling
分类号:
TD 921+.2
DOI:
10.13800/j.cnki.xakjdxxb.2014.0604
文献标志码:
A
摘要:
为了研究微波照射下岩石内部的损伤过程,以岩石颗粒为研究对象,岩石颗粒由吸波的黄铁矿和透波的方解石所组成,大小为1 mm×1 mm,采用有限差分法对微波照射下岩石颗粒的屈服分布及演化进行计算分析,计算考虑了微波照射时间和黄铁矿晶体大小的影响。研究结果表明:在微波照射下,岩石颗粒既有拉伸屈服也有剪切屈服,在照射过程中,岩石颗粒的屈服面积不超过总面积的5%,但随着照射时间的增长,可在岩石颗粒内部形成贯通的发散状屈服带,这将大幅的降低岩石颗粒的强度; 在相同条件下,黄铁矿晶体的大小决定了岩石颗粒的屈服类型,晶体小以剪切屈服为主,晶体大的以拉伸屈服为主,晶体大的颗粒更易形成贯通的沿晶屈服带。
Abstract:
To study the law of yield distribution and evolution in rock under microwave irradiation,yield field of rock particle is modeled with two dimensional finite element.Rock particle with the size 1 mm×1 mm contains microwave-absorbing pyrite in a low-absorbing calcite,and the influence of irradiation time and grain size is assessed.The results show that yield of shear and yield of tension will occur inner rock particle under microwave irradiation.The area of yield zone is not more than 5% of total area,but it can form a divergent yield zone with the increase of microwave irradiation time.This will reduce the strength of rock.Under the same condition,the small size of pyrite is mainly yield in shear,the big size of pyrite is mainly yield in tension.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2014-08-14 责任编辑:刘 洁
基金项目:国家自然科学基金资助项目(51174159)
通讯作者:戴 俊(1964-),男,贵州安顺人,教授,博士生导师,E-mail:44576294@qq.com
更新日期/Last Update: 2014-12-01