二维码（扫一下试试看！） | | 不同间距邻近爆破载荷下隧道破坏规律及动态响应研究 | | Research on Failure Rule and Dynamic Response of Tunnel Under Adjacent Blasting Loads of Different Spacing | | 投稿时间：2018-08-10 | | DOI：10.15918/j.tbit1001-0645.2018.10.002 | | 中文关键词:邻近爆破不同间距裂纹扩展振动速度 | | English Keywords:adjacent blasting loaddifferent spacingcrack growthvibration velocity | | 基金项目:国家自然基金面上项目（51274204）；国家教育部新世纪优秀人才支持计划（NCET-12-0965） | | | 摘要点击次数:854 | | 全文下载次数:503 | | 中文摘要: | | 试验研究和数值分析是研究不同间距邻近爆破载荷下隧道动态破坏问题的有效手段。通过试验研究发现，当间距较小时，迎爆侧呈三角形破坏，背爆侧表现为起拱点和底角的裂纹扩展，且随间距增加，破坏程度逐渐减弱。通过LS-DYNA数值模拟研究发现，当炸药量一定时，随间距的增加，起拱点位置振速峰值呈指数型衰减，当间距小于3D时，衰减较快，且振速峰值大于安全振速，位于危险间距内；当大于3D时，衰减缓慢，位于安全间距内。迎爆侧振速峰值最大区域分布在直墙中部至起拱点位置，直墙中下部和拱形部位次之。 | | English Summary: | | Experimental research and numerical analysis are effective methods for researching failure rule and dynamic response of tunnel under adjacent blasting loads of different spacing. Through experimental research, the following results were found. When spacing was smaller, the side facing blasting showed triangle-shaped damage. The back side of blasting side showed crack growth of sprung arch and base angle with the increase of spacing, the failure degree became lower. The research was conducted using the software LS-DYNA. When explosive mass remained the same, the vibration velocity of sprung arch decreased by exponential function with the increase of spacing. When the spacing was less than 3D, the peak velocity of attenuation was faster and the peak value of vibration velocity was larger than safe vibration velocity, which was very dangerous. When the spacing was larger than 3D, the peak velocity of attenuation was slower and the spacing was safe. The largest region of vibration velocity peak value was located in the range from the middle part to sprung arch, and then the bottom of stalk and arch. | | 查看全文查看/发表评论下载PDF阅读器 | |
陈志铭,谢奕,王士伟,于思齐.低阻硅TSV与铜TSV的热力学变参分析[J].北京理工大学学报（自然科学版）,2018,38(11):1177~1181.CHENZhi-ming,XIEYi,WANGShi-wei,YUSi-qi.ImpactofDimensionsonThermal-Mechani ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21于丝竹,李晓东,邹美帅,郭晓燕,金信.AFG-90基固体浮力材料的固化动力学与性能研究[J].北京理工大学学报（自然科学版）,2018,38(11):1205~1210.YUSi-zhu,LIXiao-dong,ZOUMei-shuai,GUOXiao-yan,JINXin.StudyonCurin ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21巨圆圆,张庆明,龙仁荣,武强,龚自正.超高速碰撞成坑特性分子动力学模拟[J].北京理工大学学报（自然科学版）,2018,38(12):1217~1221.JUYuan-yuan,ZHANGQing-ming,LONGRen-rong,WUQiang,GONGZi-zheng.MolecularDyn ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21.北京理工大学学报2018年总目次（第38卷）[J].北京理工大学学报（自然科学版）,2018,38(12):1321~1338..[J].TransactionsofBeijingInstituteofTechnology,2018,38(12):1321-1338.二维码（扫一下试试看！）北京理 ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21金智林,周乾,赵万忠.汽车电控液压制动系统动力学建模及性能研究[J].北京理工大学学报（自然科学版）,2018,38(S1):117~122.JINZhi-lin,ZHOUqian,ZHAOWan-zhong.DynamicsModelingandPerformanceAnalysisforElec ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21杨阳,杨仁树,王建国,方士正,代启亮,张念念.低温与冲击耦合作用下红砂岩力学特性试验研究[J].北京理工大学学报（自然科学版）,2018,38(S2):1~5,13.YANGYang,YANGRen-shu,WANGJian-guo,FANGShi-zheng,DAIQi-liang,ZHANGNi ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21肖大武,路超,孟宪东,王勤国.淬火温度对U-2.5wt%Nb合金组织及力学性能的影响[J].北京理工大学学报（自然科学版）,2018,38(S2):29~32.XIAODa-wu,LUChao,MENGXian-dong,WANGQin-guo.EffectofQuenchingTemperatur ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21龚苹,邹纫秋,高欣浩,渠弘毅,薛再清.高低压燃烧室活塞抛撒动力学模型及影响因素研究[J].北京理工大学学报（自然科学版）,2018,38(S2):81~85.GONGPing,ZOURen-qiu,GAOXin-hao,QUHong-yi,XUEZai-qing.KineticsModelandEf ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21杨晓红,许进升,周长省,李宏文,杜红英.三元乙丙橡胶热氧老化后的力学性能[J].北京理工大学学报（自然科学版）,2017,37(2):126~130.YANGXiao-hong,XUJin-sheng,ZHOUChang-sheng,LIHong-wen,DUHong-ying.Microcosmi ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21孙青林,梁炜,陶金,罗淑贞,陈增强,贺应平.基于CFD与最小二乘法的翼伞动力学建模[J].北京理工大学学报（自然科学版）,2017,37(2):157~162,167.SUNQing-lin,LIANGWei,TAOJin,LUOShu-zhen,CHENZeng-qiang,HEYing-ping ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21
| |
