[1]刘天云①,龚书堂②,胡伟才③,等.水下钻孔爆破水击波的传播规律及气泡帷幕对水击波的削减作用[J].爆破器材,2020,49(02):16-22.[doi:10.3969/j.issn.1001-8352.2020.02.003]
　LIU Tianyun,GONG Shutang,HU Weicai,et al.Propagation Law of Water Hammer Wave in Underwater Drilling Blasting and Reduction of Bubble Curtain on Water Hammer Wave[J].EXPLOSIVE MATERIALS,2020,49(02):16-22.[doi:10.3969/j.issn.1001-8352.2020.02.003]
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水下钻孔爆破水击波的传播规律及气泡帷幕对水击波的削减作用()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
49
期数:
2020年02
页码:
16-22
栏目:
基础理论
出版日期:
2020-04-07

文章信息/Info

Title:
Propagation Law of Water Hammer Wave in Underwater Drilling Blasting and Reduction of Bubble Curtain on Water Hammer Wave
文章编号:
5407
作者:
刘天云① ; 龚书堂② ; 胡伟才③ ; 仲鹰维③; 吴立②
①长江航道局（湖北武汉，430010）
②中国地质大学（武汉）（湖北武汉，430074）
③长江重庆航道工程局（重庆，400011）
Author(s):
LIU Tianyun①;  GONG Shutang②;  HU Weicai③;  ZHONG Yingwei③;  WU Li②
① Changjiang Waterway Bureau (Hubei Wuhan, 430010)
② Chinese University of Geosciences (Wuhan) (Hubei Wuhan, 430074)
③ Changjiang Chongqing Waterway Engineering Bureau (Chongqing, 400011)
关键词:
水下钻孔爆破; 水击波; 非线性拟合; 气泡帷幕; 削减
Keywords:
underwater drilling blasting;  water hammer wave;  nonlinear fitting;  bubble curtain;  reduction
分类号:
TV542+.5
DOI:
10.3969/j.issn.1001-8352.2020.02.003
文献标志码:
A
摘要:
结合长江航道莲沱段炸礁工程，用LS-DYNA软件对水下钻孔爆破进行数值模拟，研究水击波的传播规律和气泡帷幕对水击波的削减作用，分析了水下钻孔爆破3个方向上水击波的传播特性。结果表明，水下钻孔爆破水击波在炮孔轴线方向衰减最为明显，其次是与炮孔轴线夹45°角的方向，而最小抵抗线方向衰减最慢；且改变水深时，结论仍成立。同时，研究了不同位置的气泡帷幕对水击波峰值压力的削减效果。结果表明，气泡帷幕对水击波起到了良好的削减作用；且气泡帷幕离爆源较近时，对水击波的削减效果更好。
Abstract:
Combined with the reef blasting project in Liantuo section of the Yangtze River channel, LS-DYNA software was used to numerical simulate the underwater drilling and blasting. Propagation law of water hammer wave and the reduction effect of bubble curtain on water hammer wave were studied, and propagation characteristics of water hammer wave in three directions of underwater drilling and blasting were analyzed. The results show that attenuation of water hammer wave in the direction of borehole axis is the most obvious, followed by that in the direction of 45° angle between the axis of borehole, and that in the direction of minimum resistance line is the slowest. The conclusion is valid when the water depth condition changes. At the same time, the reduction effect of bubble curtain at different positions on the peak pressure of water hammer wave was studied. The results show that the bubble curtain has a good reduction effect on the water hammer wave, and the effect is better when the bubble curtain is close to the explosion source.

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[1]李源①,吴立①,彭亚雄②,等.水下钻孔爆破冲击波下桥墩的动态响应及防护分析[J].爆破器材,2019,48(01):58.[doi:10.3969/j.issn.1001-8352.2019.01.011]
　LI Yuan,WU Li,PENG Yaxiong,et al.Dynamic Response and Protective Analysis of Bridge Pier to Shock Wave in Underwater Drilling Blasting[J].EXPLOSIVE MATERIALS,2019,48(02):58.[doi:10.3969/j.issn.1001-8352.2019.01.011]

备注/Memo

备注/Memo:
收稿日期：2019-09-02
基金项目：国家自然科学基金资助项目（41672260）;中国地质大学（武汉）教学实验室开放基金（SKJ2018086）
第一作者：刘天云（1978－），男，高工，研究方向为水下爆破施工及技术。E-mail：593543010@qq.com
通信作者：吴立（1963－），男，教授，博导，主要从事工程爆破和地下建筑工程理论技术研究。E-mail：lwu@cug.edu.cn
更新日期/Last Update: 2020-04-07