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·24· 工程科学学报,第38卷,第1期 无节哩 30° 45 60 90 1-0.5 =10 MPa o=5 MPa A=1.0 =10 MPa w=10 MPa 1-2.0 =10 MPa p=20 MPa 图6竖直方向地应力o,=10MPa时最终形成的爆生裂纹对比 Fig.6 Blasting induced erack distribution under the vertical stress =10MPa 3.0 versity of Geosciences,2008 g=5MPa1-0.5 --0=5 MPa.i=1.0 --0,=10Ma,=0.5--0=10MPa,-.0 (季荣生.含不连续面岩体爆炸加载试验研究[学位论文] 2.5 北京:中国地质大学,2008) 20 [2]Hu R,Zhu Z M,Zhang X Y,et al.Effect of joint orientation on rock blasting.J Sichuan Unir Eng Sci Ed,2012,44 (Suppl 2): 15 41 (胡荣,朱暂明,张晓燕,等.节理方位对岩石爆破的影响规 律.四川大学学报(工程科学版),2012,44(增刊2):41) r0=5Ma.1=2.0 B]Wu L,Tao X.Theoretical analysis experiment study of the influ- -4-0=10MPa,=2.0 ence of rock structural planes on blasting effect.Min Res Der, 1999,19(1):40 0 15 30 45 60 7590 节厘角度) (吴立,陶鲜.岩体结构面影响爆破效果的理论分析与试验研 究.矿业研究与开发,1999,19(1):40) 图7各计算工况条件下最终形成的爆破损伤区面积 4]Xie B,Li H B,Wang C B,et al.Numerical simulation of presplit Fig.7 Area of the blasting induced damage zone under different cal- blasting influenced by geometrical characteristics of joints.Rock culation cases Soil Mech,2011,32(12):3812 (谢冰,李海波,王长柏,等。节理几何特征对预裂爆破效果 区(裂纹区)面积随埋深增大而减小: 影响的数值模拟.岩土力学,2011,32(12):3812) (2)已有节理有利于孔壁上下侧爆生裂纹沿竖直 5] Qu S J,Liu J F.Numerical analysis of joint angle effect on crack- 方向的扩展,含节理岩体爆破裂纹区面积大于无节理 ing with presplit blasting.Rock Soil Mech,2015,36(1):189 岩体; (玻世杰,刘际飞.节理角度对预裂爆破成缝效果的影响研 (3)侧压力系数入等于0.5和1时,爆破裂纹区 究.岩土力学,2015,36(1):189) Xiao T S,Yang R S,Zhuang JZ,et al.Dynamic caustics model 面积随节理角度增大而减小,节理角度为30°时裂纹 experiment of blasting crack developing on sandwich rock.Explos 区面积最大: Shock War%,2007,27(2):159 (4)地应力条件对爆生裂纹的萌生和扩展具有一 (肖同社,杨仁树,庄金钊,等.节理岩体爆生裂纹扩展动态 定的影响,其影响程度和规律与侧压力系数有关,同时 焦散线模型实验研究.爆炸与冲击,2007,27(2):159) 受控于节理角度 ] Singh D P,Sastry V R.Role of weakness planes in bench blas- ting-a critical study /Process of the 2nd International Symposium 参考文献 on Rock Fragment by Blasting.Keystone,1987 [8]Yang L Y.Experimental Study on Rock-Type Materials Dynamic Ji R S.Experimental Analysis of Blasting Loads on Rock Mass Con- Fracture and Blasting Crack Propagation under Confining Pressure taining Discontinuity Planes [Dissertation].Beijing:China Uni- Dissertation].Beijing:China University of Mining and Technol-工程科学学报,第 38 卷,第 1 期 图 6 竖直方向地应力 σby = 10 MPa 时最终形成的爆生裂纹对比 Fig. 6 Blasting induced crack distribution under the vertical stress σby = 10 MPa 图 7 各计算工况条件下最终形成的爆破损伤区面积 Fig. 7 Area of the blasting induced damage zone under different cal￾culation cases 区( 裂纹区) 面积随埋深增大而减小; ( 2) 已有节理有利于孔壁上下侧爆生裂纹沿竖直 方向的扩展,含节理岩体爆破裂纹区面积大于无节理 岩体; ( 3) 侧压力系数 λ 等于 0. 5 和 1 时,爆破裂纹区 面积随节理角度增大而减小,节理角度为 30°时裂纹 区面积最大; ( 4) 地应力条件对爆生裂纹的萌生和扩展具有一 定的影响,其影响程度和规律与侧压力系数有关,同时 受控于节理角度. 参 考 文 献 [1] Ji R S. Experimental Analysis of Blasting Loads on Rock Mass Con￾taining Discontinuity Planes[Dissertation]. Beijing: China Uni￾versity of Geosciences,2008 ( 季荣生. 含不连续面岩体爆炸加载试验研究[学位论文]. 北京: 中国地质大学,2008) [2] Hu R,Zhu Z M,Zhang X Y,et al. Effect of joint orientation on rock blasting. J Sichuan Univ Eng Sci Ed,2012,44( Suppl 2) : 41 ( 胡荣,朱哲明,张晓燕,等. 节理方位对岩石爆破的影响规 律. 四川大学学报( 工程科学版) ,2012,44( 增刊 2) : 41) [3] Wu L,Tao X. Theoretical analysis experiment study of the influ￾ence of rock structural planes on blasting effect. Min Res Dev, 1999,19( 1) : 40 ( 吴立,陶鲜. 岩体结构面影响爆破效果的理论分析与试验研 究. 矿业研究与开发,1999,19( 1) : 40) [4] Xie B,Li H B,Wang C B,et al. Numerical simulation of presplit blasting influenced by geometrical characteristics of joints. Rock Soil Mech,2011,32( 12) : 3812 ( 谢冰,李海波,王长柏,等. 节理几何特征对预裂爆破效果 影响的数值模拟. 岩土力学,2011,32( 12) : 3812) [5] Qu S J,Liu J F. Numerical analysis of joint angle effect on crack￾ing with presplit blasting. Rock Soil Mech,2015,36( 1) : 189 ( 璩世杰,刘际飞. 节理角度对预裂爆破成缝效果的影响研 究. 岩土力学,2015,36( 1) : 189) [6] Xiao T S,Yang R S,Zhuang J Z,et al. Dynamic caustics model experiment of blasting crack developing on sandwich rock. Explos Shock Waves,2007,27( 2) : 159 ( 肖同社,杨仁树,庄金钊,等. 节理岩体爆生裂纹扩展动态 焦散线模型实验研究. 爆炸与冲击,2007,27( 2) : 159) [7] Singh D P,Sastry V R. Role of weakness planes in bench blas￾ting-a critical study / / Process of the 2nd International Symposium on Rock Fragment by Blasting. Keystone,1987 [8] Yang L Y. Experimental Study on Rock-Type Materials Dynamic Fracture and Blasting Crack Propagation under Confining Pressure [Dissertation]. Beijing: China University of Mining and Technol- · 42 ·
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