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[1]陈少波,卢玉斌,袁海梁,等.基于ANSYS/LS-DYNA的液态CO2相变破岩裂纹扩展特征研究*[J].中国安全生产科学技术,2023,19(6):74-82.[doi:10.11731/j.issn.1673-193x.2023.06.011]
　CHEN Shaobo,LU Yubin,YUAN Hailiang,et al.Study on crack propagation characteristics of liquid CO2 phase transition rock breaking based on ANSYS/LS-DYNA[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2023,19(6):74-82.[doi:10.11731/j.issn.1673-193x.2023.06.011]
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基于ANSYS/LS-DYNA的液态CO2相变破岩裂纹扩展特征研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
19
期数:
2023年6期
页码:
74-82
栏目:
职业安全卫生管理与技术
出版日期:
2023-06-30

文章信息/Info

Title:
Study on crack propagation characteristics of liquid CO2 phase transition rock breaking based on ANSYS/LS-DYNA
文章编号:
1673-193X(2023)-06-0074-09
作者:
陈少波; 卢玉斌; 袁海梁; 刘孝义; 张万虎; 马飞飞; 鹿存金; 董斌; 刘金泉
（1.福州大学 先进制造学院，福建 泉州 362251；
2.中国科学院海西研究院泉州装备制造研究中心，福建 泉州 362206；
3.中国化学工程重型机械化有限公司，北京 102600；
4.中化学建设投资集团有限公司，北京 102300）
Author(s):
CHEN Shaobo;  LU Yubin;  YUAN Hailiang;  LIU Xiaoyi;  ZHANG Wanhu;  MA Feifei;  LU Cunjin;  DONG Bin;  LIU Jinquan
(1.School of Advanced Manufacturing,Fuzhou University,Quanzhou Fujian 362251,China;
2.Quanzhou Institute of Equipment Manufacturing,Haixi Institute of Chinese Academy of Sciences,Quanzhou Fujian 362206,China;
3.China National Chemical Engineering Heavy-Mechanization Co.,Ltd.,Beijing 102600,China;
4.China National Chemical Construction Investment Group Co.,Ltd.,Beijing 102300,China)
关键词:
CO2相变致裂' target="_blank" rel="external">">2相变致裂; 爆炸应力波; 数值仿真; 裂纹扩展; 加载速率
Keywords:
CO2 phase transition cracking' target="_blank" rel="external">">2 phase transition cracking;  explosion stress wave;  numerical simulation;  crack propagation;  loading rate
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2023.06.011
文献标志码:
A
摘要:
为研究液态CO2相变爆破技术破岩机理,更好地推广这种安全爆破技术，采用ANSYS/LS-DYNA仿真软件对液态CO2相变爆破岩石的裂纹扩展特征及影响致裂结果的关键因素进行研究。基于仿真结果对比CO2爆破和炸药爆破岩石损伤裂纹的区别，并研究岩石爆破裂纹的扩展形式与应力波加载速率和岩石强度的关系，以及地应力对爆破裂纹扩展的影响。研究结果表明：CO2爆破岩石产生裂纹条数较少的原因是其爆炸应力波的加载速率较低，且只有爆炸应力波强度高于岩石动态抗压强度时才会产生粉碎区。初始地应力会抑制爆破裂纹的扩展，在各向异性的地应力作用下，裂纹会朝着最大地应力的方向扩展。研究结果可为实际工程中的爆破参数选取提供参考。
Abstract:
In order to study the rock breaking mechanism of liquid CO2 phase transition blasting technology and better promote this safe blasting technology,the finite element simulation software ANSYS/LS-DYNA was used to study the crack propagation characteristics of rock by liquid CO2 phase transition blasting and the key factors affecting the cracking results.Based on the numerical simulation results,the difference of rock damage cracks between CO2 blasting and explosive blasting was compared.The relationship between the propagation form of rock blasting crack and the loading rate of stress wave and the strength of rock,as well as the influence of in-situ stress on the growth of blasting crack were studied.The results showed that the reason why there are fewer cracks in CO2 blasting rock is that the loading rate of the blast stress wave is low,and only when the strength of blasting stress wave is higher than the dynamic compressive strength of rock,the crushing zone will be generated.The initial in-situ stress will inhibit the propagation of blasting crack,and under the anisotropic in-situ stress,the crack will expand towards the direction of the maximum in-situ stress.The research results can provide reference for the selection of blasting parameters in practical engineering.

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备注/Memo

备注/Memo:
收稿日期： 2022-06-06
* 基金项目： 福建省自然科学青年基金项目（2021J05104）
作者简介： 陈少波，硕士研究生，主要研究方向为气体爆破数值仿真。
通信作者： 卢玉斌，博士，研究员，主要研究方向为抗冲击性能材料与结构。
更新日期/Last Update: 2023-07-09