| 不同轴向应力下瞬态卸载诱发岩爆破坏数值模拟 |
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| 引用本文： | 黄志平,唐春安,赵文.不同轴向应力下瞬态卸载诱发岩爆破坏数值模拟[J].东北大学学报(自然科学版),2011,32(6):859-863. |
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| 作者姓名： | 黄志平 唐春安 赵文 |
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| 作者单位： | 1. 东北大学资源与土木工程学院,辽宁沈阳,110819
2. 大连理工大学土木工程学院,辽宁大连,116024 |
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| 基金项目： | 国家重点基础研究发展计划项目(2007CB209400); 国际(地区)合作交流项目(50820125405) |
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| 摘 要： | 运用RFPA2D进行岩石试样瞬态卸掉围压数值试验研究,旨在探讨在不同地应力条件下隧道、洞室等实际工程开挖时诱发的岩爆过程和机理.首先进行单轴加载数值试验,然后进行同围压不同轴向应力下瞬时卸载围压诱发岩爆数值试验.结果表明:单轴加载时试样集中某狭窄带破坏,有少量微震事件;瞬态卸载却集中自由面附近较大面积损伤,卸载前几乎没...
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| 关 键 词： | 瞬态卸荷 岩爆 数值模拟 高应力 岩爆机理 |
Numerical Simulation of Rockburst Failure Induced Transient Unloading Under Different Axial Stress |
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| HUANG Zhi-ping,TANG Chun-an,ZHAO Wen.Numerical Simulation of Rockburst Failure Induced Transient Unloading Under Different Axial Stress[J].Journal of Northeastern University(Natural Science),2011,32(6):859-863. |
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| Authors: | HUANG Zhi-ping TANG Chun-an ZHAO Wen |
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| Institution: | HUANG Zhi-ping1,TANG Chun-an2,ZHAO Wen1(1.School of Resources & Civil Engineering,Northeastern University,Shenyang 110819,China,2.School of Civil Engineering,Dalian University of Technology,Dalian 116024,China.) |
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| Abstract: | The numerical tests of rock specimens were simulated by using the code of RFPA2D with confining pressure transiently unloaded.The objective is to study the mechanism and process of the rockburst under different geostatic stress conditions,which is caused by transient unloading during the excavation of the actual engineering such as underground tunnels and chambers.A numerical test of uniaxial loading was carried out,and then several rockburst experiments with same confining pressure transiently unloaded wer... |
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| Keywords: | transient unloading rockburst numerical simulation high stress rockburst mechanism |
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