肖望;刘丹珠;吴新霞;寇佳;
XIAO Wang1,2,LIU Dan-zhu2,3,WU Xin-xia2,KOU Jia1(1.Lianyungang Golden Coast Development and Construction Co.,Ltd.,Lianyungang 222042, Jiansu,China;2.Changjiang River Scientific Research Institute,Wuhan 430010,China;3.China Railway Major Bridge Reconnaissance & Design Institute Co.,Ltd.,Wuhan 430050,China)

• 1:连云港金海岸开发建设有限公司
• 2:长江科学院
• 3:中铁大桥勘察设计院有限公司

摘要(Abstract)：

炸药在隧道中爆炸时,由于受到隧道壁的限制,产生的空气冲击波的强度更大,危害更严重;同时隧道中的弯道、岔口影响着冲击波的传播。利用ANSYS/LS-DYNA对隧道中空气冲击波的传播进行了数值模拟,模拟结果与公式计算值基本吻合,验证了数值模型和参数选取的合理性。在此基础上,对冲击波在遇到转弯、岔口的情况进行了数值模拟,模拟结果表明,弯道可以削减10%～15%的超压峰值;岔口中主通道冲击波峰值为直通道的70%～80%,支通道为15%～25%。
When explosives explode in the tunnel,the shock wave caused by it is strong and destruction brought by it is more serious due to limit of tunnel wall.Meanwhile,the turn and the crossing in the tunnel affect the shock wave propagation.The propagation of the shock wave in straight tunnel was simulated by ANSYS/LS-DYNA and the numerical simulation results were consistent with the empirical formula calculation results basically,which showed that the numerical model and blasting parameters selection were reasonable.On this basis,propagation of the shock wave in the tunnel with a turn and in the tunnel with a crossing was simulated respectively.Simulation results showed that the overpressure peak value of the shock wave in the tunnel with a turn was reduced 10% ¹5%,the overpressure peak value in main channel of the tunnel with a crossing was 70% 15%,the overpressure peak value in main channel of the tunnel with a crossing was 70% 80% in straight tunnel,and the overpressure peak value in branch channel was 15% 80% in straight tunnel,and the overpressure peak value in branch channel was 15% ²5% in straight tunnel.

关键词(KeyWords)： 弯隧道;岔口隧道;冲击波;超压峰值;ANSYS/LS-DYNA
Tunnel with a turn;Tunnel with a crossing;Shock wave;Overpressure peak value;ANSYS/LS-DYNA

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 肖望;刘丹珠;吴新霞;寇佳;
XIAO Wang1,2,LIU Dan-zhu2,3,WU Xin-xia2,KOU Jia1(1.Lianyungang Golden Coast Development and Construction Co.,Ltd.,Lianyungang 222042, Jiansu,China;2.Changjiang River Scientific Research Institute,Wuhan 430010,China;3.China Railway Major Bridge Reconnaissance & Design Institute Co.,Ltd.,Wuhan 430050,China)

参考文献(References)：

• (1)张正宇,张文煊,吴新霞.现代水利水电工程爆破[M].中国水利水电出版社,2003.
• (2)穆朝民,任辉启,李永池,等.爆炸冲击波在复杂坑道内传播规律的数值研究[J].爆破器材,2008,37(5):1-4.
• (3)刘晶波,闫秋实,武俊.坑道内爆炸冲击波传播规律的研究[J].振动与冲击,2009(6):8-11.
• (4)沈俊,李永池,庞伟宾.化爆冲击波在90°拐角通道内的到时规律[J].中国工程科学,2006,8(3):53-57.
• (5)庞伟宾,何翔,李茂生,等.空气冲击波在坑道内走时规律的实验研究[J].爆炸与冲击,2003,6(11):573-575.
• (6)杨科之,杨秀敏.坑道内化爆冲击波的传播规律[J].爆炸与冲击,2003,1(1):37-40.
• (7)时党勇,李裕春,张胜民.基于ANSYS/LS-DYNA8.1进行显式动力分析[M].北京:清华大学出版社,2005.
• (8)肖黎,屈文忠,余杰.建筑物内爆流固耦合数值分析[J],武汉理工大学学报,2009,15(5):56-59.