|本期目录/Table of Contents|

[1]张 满,康钦容,李梦玲,等.浅孔楔形掏槽爆破技术在特大断面小净距隧道群施工中的应用[J].武汉工程大学学报,2023,45(05):568-573.[doi:10.19843/j.cnki.CN42-1779/TQ.202101001]
 ZHANG Man,KANG Qinrong,LI Mengling,et al.Application of Shallow Hole Wedge Cut Technology in Construction ofExtra-Large Section and Small Clear Distance Tunnel Groups[J].Journal of Wuhan Institute of Technology,2023,45(05):568-573.[doi:10.19843/j.cnki.CN42-1779/TQ.202101001]
点击复制

浅孔楔形掏槽爆破技术在特大断面小净距隧道群
施工中的应用
(/HTML)
分享到:

《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
45
期数:
2023年05期
页码:
568-573
栏目:
资源与环境工程
出版日期:
2023-11-17

文章信息/Info

Title:
Application of Shallow Hole Wedge Cut Technology in Construction of
Extra-Large Section and Small Clear Distance Tunnel Groups
文章编号:
1674 - 2869(2023)05 - 0568 - 06
作者:
张 满1康钦容1李梦玲1蒋富强2姜永东3刘远鹏2侯鹏伟1张卫中*1
1. 武汉工程大学兴发矿业学院,湖北 武汉 430074;
2. 中铁隧道集团二处有限公司,河北 三河 065201;
3. 重庆大学资源与安全学院,重庆 400044
Author(s):
ZHANG Man1 KANG Qinrong1 LI Mengling1 JIANG Fuqiang2 JIANG Yongdong3
1. Xingfa School of Mining Engineering, Wuhan Institute of Technology, Wuhan 430074, China;
2. China Railway Tunnel Group No.2 Engineering Co., Ltd, Sanhe 065201, China;
3. School of Resources and Safety Engineering, Chongqing University, Chongqing 400044, China
关键词:
楔形掏槽爆破数值模拟爆破振动隧道群
Keywords:
wedge cut blasting numerical simulation blasting vibration tunnel groups
分类号:
U455.6
DOI:
10.19843/j.cnki.CN42-1779/TQ.202101001
文献标志码:
A
摘要:
为了解决隧道群爆破施工时振动强度过大而引起围岩失稳问题,以贵安数据中心特大断面小净距隧道群爆破施工工程为背景,采用浅孔楔形掏槽(SHWC)爆破技术进行施工作业,监测后行洞爆破施工与先行洞支护结构的爆破振动速度,并运用LS-DYNA模拟分析爆破振动强度对隧道围岩应力的影响。研究结果表明:SHWC爆破技术能够有效地控制爆破振动强度,能够将振动速度峰值控制在4.5 cm/s的安全允许标准以内;SHWC爆破有效应力峰值可达117 MPa;爆破地震波传播过程中存在时间上的连续性,形成的反射拉伸波向岩体深部方向延伸与正向传播的爆炸压缩应力波发生干涉叠加,使得岩石被拉伸和压缩而发生破坏;楔形掏槽孔呈“Λ”形结构布置,炸药爆炸产生的有效应力主要集中在掏槽孔底部,使得掏槽区被爆岩体能有效克服周围岩石的夹制作用,提高了掏槽效果,同时,楔形掏槽孔还能进一步扩大掏槽范围。

Abstract:
To solve the problem of instability of surrounding rock caused by excessive vibration intensity during blasting construction of tunnel groups, we took the blasting construction of tunnel groups with extra-large section and small clear distance from Gui ’an Data Center as a study case. The blasting vibration velocity of the subsequent hole blasting construction and the first hole supporting structure were monitored, and the influences of blasting vibration intensity on the stress of the tunnel surrounding rock were simulated and analyzed by LS-DYNA. The results show that the shallow hole wedge cut blasting technology can effectively control the blasting vibration intensity, and can control the peak vibration velocity within the safety-allowable standard of 4.5 cm/s. The peak effective stress of shallow hole wedge cut blasting can reach 117 MPa. There is time continuity in the propagation process of blasting seismic wave. The reflected tensile wave formed by the explosion extends to the deep part of the rock mass and interferes with the compressive stress wave propagating in the forward direction, which destroys the rock due to tension and compression. When the wedge-shaped cutting hole is arranged in a Λ -shaped structure, the effective stress generated by the explosive explosion mainly concentrates at the bottom of the cutting hole, which enables the blasting rock mass in the cutting area to effectively overcome the clamping of the surrounding rock and improve the cutting effect. At the same time, the wedge-shaped cutting hole can further expand the cutting range.

参考文献/References:

[1] 石洪超,张继春.并行小净距隧道楔形掏槽爆破振动效应研究[J].地下空间与工程学报,2019,15(2):607-613,621.

[2] 何闯,王海亮.爆破基于4种不同类型掏槽的爆破效果研究[J].公路,2017,62(2):250-254.
[3] 何闯,王海亮.地铁暗挖车站多级楔形掏槽微振动爆破参数研究[J].隧道建设,2016,36(8):941-946.
[4] 杨国梁,姜琳琳,杨仁树. 复式楔形深孔掏槽爆破研究[J].中国矿业大学报,2013,42(5):755-760.
[5] 邹新宽,潘强,王微,等.隧道楔形分段掏槽爆破减震机理及试验研究[J].现代隧道技术,2017,54(4):186-192.
[6] 邹新宽,张继春,潘强,等. 楔形分段掏槽爆破减振效应研究[J].西南交通大学学报,2018,53(3):450-458.
[7] 凌同华,曹峰,李洁.菱形楔形混合掏槽爆破的数值模拟研究与应用[J].爆破,2016,33(4):9-14,33.
[8] 廖涛,蒲传金,王俊青,等.岩巷切缝药包楔形掏槽爆破模型试验与分析[J]. 金属矿山,2015(2):40-44.
[9] 万嗣鹏,张义平,陶铁军,等. 基于准岩体抗拉强度的爆破振动速度衰减公式改进[J]. 金属矿山,2019(7):60-64.
[10] 中国国家标准化管理委员会.GB 6722—2014爆破安全规程[S].北京:中国标准出版社,2015.
[11] 张袁娟,孙文标,赵强.台阶爆破空孔和预裂缝减震效果研究[J].煤,2017,26(4):1-3,12.
[12] 刘敦文,宋广晨,褚夫蛟, 等.隧道爆破开挖对邻近隧道安全影响的数值分析[J].安全与环境学报,2014,14(2):64-68.
[13] 周俊汝,卢文波,张乐,等.爆破地震波传播过程的振动频率衰减规律研究[J].岩石力学与工程学报,2014,33(11):2171-2178.
[14] 吉凌,周传波,刘赶平, 等.特大断面隧道倒T型掏槽爆破研究与应用[J].华中科技大学学报(自然科学版),2020,48(2):54-60.
[15] 王平,程贵海,邓春海, 等.基于灰色关联分析法探析隧道中深孔楔形掏槽爆破[J].中国矿业,2020,29(11):165-171.
[16] 熊祖钊,胡从骄,蔡路军.Ⅴ级围岩大断面隧道爆破开挖技术[J].科学技术与工程,2018,18(17):279-284.

相似文献/References:

[1]肖云,周春梅,吴燕玲,等.露天采场高陡岩质边坡典型地段稳定性分析[J].武汉工程大学学报,2009,(03):34.
 XIAO Yun,ZHOU Chun mei,WU Yan ling,et al.Study on stability analysis of the typical area in highsteep slope of open pit[J].Journal of Wuhan Institute of Technology,2009,(05):34.
[2]刘繁,汪建华.TE103单模谐振腔的计算模拟及优化[J].武汉工程大学学报,2009,(03):56.
 LIU Fan,WANG Jian hua.Numerical simulation and optimization of electromagnetic field of TE103 singmode cavity[J].Journal of Wuhan Institute of Technology,2009,(05):56.
[3]庄芸.预应力碳纤维布加固梁最佳预应力水平的确定[J].武汉工程大学学报,2008,(04):15.
 ZHUANG Yun.Determination of the best prestressed level to reinforced concrete beams strengthened with prestressed carbon fiber reinforced polymer [J].Journal of Wuhan Institute of Technology,2008,(05):15.
[4]刘玉华,喻九阳,郑小涛,等.气气混合器的三维流场数值模拟[J].武汉工程大学学报,2008,(02):108.
 LIU Yu hua,YU Jiu yang,ZHENG Xiao tao,et al.The numerical simulation of fluid flow in a threedimensionalmodel of gasgas mixer[J].Journal of Wuhan Institute of Technology,2008,(05):108.
[5]魏化中,张志辉,帅健,等.基于有限元分析的下排渣门设计[J].武汉工程大学学报,2010,(05):85.[doi:10.3969/j.issn.16742869.2010.05.023]
 WEI Hua zhong,ZHANG Zhi hui,SHUAI Jian,et al.Structural design of the lower discharge gate based on FEA[J].Journal of Wuhan Institute of Technology,2010,(05):85.[doi:10.3969/j.issn.16742869.2010.05.023]
[6]管昌生,万兆,胡平放.地源热泵地埋管多层岩土温度场的数值分析[J].武汉工程大学学报,2011,(04):42.[doi:10.3969/j.issn.16742869.2011.04.011]
 GUAN Chang sheng,WAN Zhao,HU Ping fang.Numerical analysis on multilayer geotechnical temperature field of GSHP buried tube[J].Journal of Wuhan Institute of Technology,2011,(05):42.[doi:10.3969/j.issn.16742869.2011.04.011]
[7]孙亚忠,陈作炳,董新营.立磨内部流场的数值模拟[J].武汉工程大学学报,2011,(04):89.[doi:10.3969/j.issn.16742869.2011.04.023]
 SUN Ya zhong,CHEN Zuo bing,DONG Xin ying.Numerical simulation study of internal flow field in vertical roller mill[J].Journal of Wuhan Institute of Technology,2011,(05):89.[doi:10.3969/j.issn.16742869.2011.04.023]
[8]梅启双,张电吉,周春梅,等.充填体支护性能对采场围岩应力应变影响机理[J].武汉工程大学学报,2011,(07):69.
 MEI Qishuang,ZHANG Dianji,ZHOU Chunmei,et al.Influence mechanism of supporting property of fillmaterial on surrounding rock stress and strain of stope[J].Journal of Wuhan Institute of Technology,2011,(05):69.
[9]肖瑶,郑贤中,周宁波.卫星天线锅盖冲压成形模拟与优化[J].武汉工程大学学报,2011,(09):96.
 XIAO Yao,ZHENG Xianzhong,ZHOU Ningbo.Stamping simulation and optimization of satellite antenna pot[J].Journal of Wuhan Institute of Technology,2011,(05):96.
[10]舒安庆,刘凯,马长春,等.生物反应器内搅拌器的优化设计[J].武汉工程大学学报,2011,(11):66.
 SHU An qing,LIU Kai,MA Chang chun,et al.Optimization design of stirrer in bioreactor[J].Journal of Wuhan Institute of Technology,2011,(05):66.

备注/Memo

备注/Memo:
收稿日期:2021-01-01
基金项目:武汉工程大学研究生教育创新基金(CX2019107,CX2022596); 国家自然基金(51804222,52174086)
作者简介:张 满,硕士研究生。E-mail:2228239596@qq.com
*通讯作者:张卫中,博士,教授。E-mail:wzzhang1120@126.com
引文格式:张满,康钦容,李梦玲,等. 浅孔楔形掏槽爆破技术在特大断面小净距隧道群施工中的应用[J]. 武汉工程大学学报,2023,45(5):568-573.
更新日期/Last Update: 2023-10-25