二维码（扫一下试试看！） | | 基于Goodman单元的顺层边坡爆破动力响应数值模拟 | | Numerical Simulation of Dynamic Response Law of Bedding Slope Blasting Based on Goodman Element | | 投稿时间：2018-12-01 | | DOI：10.15918/j.tbit1001-0645.2018.s2.003 | | 中文关键词:顺层边坡爆炸荷载Goodman接触单元鞭梢效应 | | English Keywords:bedding slopeblasting loadGoodman elementwhiplash effect | | 基金项目:北京市自然科学基金资助项目（46004015201501） | | | 摘要点击次数:333 | | 全文下载次数:125 | | 中文摘要: | | 为了研究爆炸荷载作用下顺层边坡岩体的动力响应，采用数值模拟的方法对边坡坡面及岩体内部质点振速、应力场的分布规律进行分析，采用Goodman单元模拟岩体内部软弱结构面.结果表明：边坡台阶处坡形的变化会导致质点振速和应力值波动明显，台阶突出部位"鞭梢效应"显著，但质点振速与应力并非在边坡坡面的同一位置达到峰值，因此将质点峰值振速或应力值作为评价边坡稳定性的单一指标并不合理；岩体内部质点的动力响应规律主要与介质阻尼、结构面以及边坡形状等因素有关，结构面的存在会造成爆炸应力波的反射叠加，质点振速和应力值在结构面之前也有一定程度的放大；边坡自由面对应力波的反射叠加效应不应忽视. | | English Summary: | | To study the dynamic response of bedding slope rock under blasting load, numerical simulation method is used to analyze the propagation law of velocity and stress field of the slope. Goodman unit is used to simulate the relative slip of rock masses on both sides of the structural plane. The results show that the change of the slope shape at the step of the slope will cause the vibration velocity and stress value of the particle to fluctuate significantly, and the "whiplash effect" of the protruding part of the slope step is obvious, but the vibration velocity and stress do not reach the peak at the same part of the slope. Therefore, it is unreasonable to use the peak vibration velocity or stress value as the single index to evaluate the stability of the slope. The dynamic response of the internal mass of the rock mass is mainly related to the factors such as medium damping, structural plane and slope shape. The existence of the internal structural plane will cause the reflection of the explosion stress wave to be superimposed, and the vibration velocity and stress value of the particle point will also be enlarged to some extent before the structural surface. The reflection superposition effect of stress wave on the free surface should not be ignored | | 查看全文查看/发表评论下载PDF阅读器 | |
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徐坤,皮爱国,刘坚成,刘源,刘志林,黄风雷.考虑应变率效应的结构响应相似律的研究[J].北京理工大学学报（自然科学版）,2018,38(S2):105~108.XUKun,PIAi-guo,LIUJian-cheng,LIUYuan,LIUZhi-lin,HUANGFeng-lei.Analysis ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21崔云霄,郭庆伟,孙震宇,王雷元,张国栋.装药形状对两端开口钢筒结构变形规律的影响[J].北京理工大学学报（自然科学版）,2018,38(S2):95~99.CUIYun-xiao,GUOQing-wei,SUNZhen-yu,WANGLei-yuan,ZHANGGuo-dong.Influenceo ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21刘强,陈鹏万,苏健军,李芝绒,韩璐.基于CONWEP算法聚脲钢板复合结构变形的数值模拟[J].北京理工大学学报（自然科学版）,2018,38(S2):161~165.LIUQiang,CHENGPeng-wan,SUJian-jun,LIZhi-rong,HANLu.NumericalSimulat ... 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尹艳华,孙美,庞志康.第一性理论研究60~160GPa下固态氢结构稳定性[J].北京理工大学学报（自然科学版）,2017,37(2):212~215.YINYan-hua,SUNMei,PANGZhi-kang.StructuralStabilityoftheSolidHydrogenStructu ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21丁俊才,吴斌,何存富.矩阵理论在黏接结构界面脱黏超声检测方法中的应用[J].北京理工大学学报（自然科学版）,2017,37(3):221~226,249.DINGJun-cai,WUBin,HECun-fu.ApplicationofMatrixTheoryinAcousticTestingMeth ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21聂百胜,杨龙龙,王成,黄金鑫.瓦斯爆炸炭黑结构及产生机理分析[J].北京理工大学学报（自然科学版）,2017,37(4):424~429.NIEBai-sheng,YANGLong-long,WANGCheng,HUANGJin-xin.SootCharacteristicandFormationM ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21张真宁,孙华飞,韩希武,曹丽梅.晶粒直径的信息几何结构[J].北京理工大学学报（自然科学版）,2017,37(4):436~440.ZHANGZhen-ning,SUNHua-fei,HANXi-wu,CAOLi-mei.TheInformationGeometricStructuresoftheS ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21张琳,曾小华,郭孔辉,王杨,张策,宋大凤.功率分流式混合动力汽车复合电源系统设计[J].北京理工大学学报（自然科学版）,2017,37(5):478~484.ZHANGLin,ZENGXiao-hua,GuoKong-hui,WANGYang,ZHANGCe,SONGDa-feng.Designof ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21
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