爆破器材2024，Vol.53Issue(6)：41-49,9.DOI:10.3969/j.issn.1001-8352.2024.06.007
CO2相变致裂岩石的损伤范围的计算及影响因素研究
Damage Range Calculation and Influencing Factors of Rock Fractures Caused by CO2 Phase Transition Blasting
摘要
Abstract
In the technology of rock fractures caused by CO2 phase transition,in order to study the relationship be-tween the damage range of rocks and the CO2 phase transition fracturing parameters,a calculation formula for the damage radius of rock fractures caused by CO2 phase transition impact was established based on Mises criterion and damage me-chanics theory.The damage radius of rocks with different thicknesses of energy release sheet was simulated using 3DEC software,and compared with theoretical calculations to verify the accuracy of the established model.The influence of factors such as thickness of the energy release sheet,rock strength,diameter of borehole,and CO2 filling mass on rock damage was analyzed.The results show that the damage radius has a logarithmic growth relationship with the thickness of the energy release sheet and CO2 filling mass,and an exponential decay relationship with the rock strength and the diameter of bore-hole.Increasing the thickness of the energy release sheet is the most effective way to increase the damage radius.The in-crease in the diameter of the borehole will rapidly reduce the damage range of rock.It can provide references for the damage mechanism and technical parameter selection in CO2 phase trasition blasting.关键词
液态CO2/相变致裂/损伤半径/泄能片厚度/CO2充装质量Key words
liquid CO2/phase transition blasting/damage radius/thickness of energy release sheet/CO2 filling mass分类
矿山工程引用本文复制引用
阿比尔的,胡尊镕,傅林,韩亚峰,刘明维..CO2相变致裂岩石的损伤范围的计算及影响因素研究[J].爆破器材,2024,53(6):41-49,9.基金项目
国家自然科学基金青年基金(41907261) （41907261）
重庆交通大学研究生科研创新项目(2022S0023) （2022S0023）
重庆市水利科技项目(CQSLK-2022015) （CQSLK-2022015）
