Study and Application of Contour Control Blasting Technology for Large Section Tunnel

Qiyue LI; Xinhao ZHAO; Xin’ao WEI; Jing ZHENG; Jianqiu ZHANG

doi:10.11872/j.issn.1005-2518.2019.03.350

Gold Science and Technology >

2019 , Vol. 27 >Issue 3: 350 - 357

DOI: https://doi.org/10.11872/j.issn.1005-2518.2019.03.350

Mining Technology and Mine Management

Study and Application of Contour Control Blasting Technology for Large Section Tunnel

Qiyue LI ^,¹ ,
Xinhao ZHAO ^,¹ ,
Xin’ao WEI ¹ ,
Jing ZHENG ² ,
Jianqiu ZHANG ²

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1. School of Resources and Safety Engineering，Central South University，Changsha 410083，Hunan，China
2. CCCC First Highway Engineering Co. ，Ltd. ，Fifth Company，Hami 839000，Xinjiang，China

Received date: 2018-05-22

Revised date: 2018-09-20

Online published: 2019-07-09

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Highlights

With the general trend of tunnel construction in China towards large and super-large sections，the application of full-face blasting excavation method in tunnel excavation generally has the problems of poor contour forming effect，low trace rate of blasting holes and large under or over excavation.The technology of full section blasting with pre-arranged layer and the technology of detonating peripheral hole with triangular lap of detonating cord can effectively solve the above problems and achieve good contour forming effect.The two kinds of blasting modes are introduced and compared，and the corresponding engineering application conditions are given in this paper.The advantages of the full section blasting technology with pre-arranged layer are analyzed，and the calculation formula for the parameters of the pre-arranged layer is given.The detonating mechanism of triangular lap of detonating cord is analyzed.The theoretical calculation of the blasting time is calculated，and as a result,the detonation signal can be transmitted to the whole blasting network in 5 ms，and the maximum detonating time difference between adjacent blast hole is less than 1ms.Based on the Dong Tianshan tunnel project，the field tests of two kinds of blasting modes have been carried out.The results show that both modes can effectively control the contour of the excavation section，improve the hole trace rate and reduce the over excavation.The applicable conditions of the two modes are as follows：The technology of full section blasting with pre-arranged layer can be used under the good condition of Ⅳ class surrounding rock and above grade Ⅲ surrounding rock；The technology of detonating peripheral hole with triangular lap of detonating cord can be applied under the poor condition of Ⅳ class surrounding rock and Ⅴ surrounding rock.The results can provide reference for similar projects.

Cite this article

Qiyue LI , Xinhao ZHAO , Xin’ao WEI , Jing ZHENG , Jianqiu ZHANG . Study and Application of Contour Control Blasting Technology for Large Section Tunnel[J]. Gold Science and Technology, 2019 , 27(3) : 350 -357 . DOI: 10.11872/j.issn.1005-2518.2019.03.350

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References

Publishing order | Descend order by publishing year | Descend order by cited within

1	过江，崔文强，陈辉 .不同耦合介质光面爆破裂纹发展数值分析［J］.黄金科学技术，2016，24（1）：68-75. Guo Jiang ， Cui Wenqiang ， Chen Hui .Numerical analysis of the smooth blasting crack development under different coupling medium［J］.Gold Science and Technology，2016，24（1）：68-75.

2	王力功 .光面爆破技术研究及其在隧道掘进中的应用［J］.工程爆破，2001（1）：65-68，78. Wang Ligong .Study on smooth blasting technology and its application in tunnel excavation［J］.Engineering Blasting，2001（1）：65-68，78.

3	王梦恕，谭忠盛 .中国隧道及地下工程修建技术［J］.中国工程科学，2010，12（12）：4-10. Wang Mengshu ， Tan Zhongsheng .The construct technology of tunnel and underground engineering in China［J］.Engineering Science，2010，12（12）：4-10.

4	王建秀，邹宝平，胡力绳，等 .隧道及地下工程光面爆破技术研究现状与展望［J］.地下空间与工程学报，2013，9（4）：800-807. Wang Jianxiu ， Zou Baoping ， Hu Lisheng ，et al .Advance and trend in smooth blasting technology for tunnel and underground engineering［J］.Chinese Journal of Underground Space and Engineering，2013，9（4）：800-807.

5	徐颖，宗琦 .光面爆破软垫层装药结构参数理论分析［J］.煤炭学报，2000，25（6）：68-75. Xu Ying ， Zong Qi .Theoretical analysis on the parameters of smooth blasting soft mat layer charging construction［J］.Journal of China Coal Society，2000，25（6）：68-75.

6	宗琦，陆鹏举，罗强 .光面爆破空气垫层装药轴向不耦合系数理论研究［J］.岩石力学与工程学报，2005，24（6）：1047-1051. Zong Qi ， Lu Pengju ， Luo Qiang .Theoretical study on axial decoupling coefficients of smooth blasting with air cushion charging construction［J］.Chinese Journal of Rock Mechanics and Engineering，2005，24（6）：1047-1051.

7	罗伟，朱传云，祝启虎 .隧洞光面爆破中炮孔堵塞长度的数值分析［J］.岩土力学，2008，29（9）：2487-2492. Luo Wei ， Zhu Chuanyun ， Zhu Qihu .Numerical simulation of stemming length in tunnel smooth blasting［J］.Rock and Soil Mechanics，2008，29（9）：2487-2492.

8	马芹永 .光面爆破炮眼间距及光面层厚度的确定［J］.岩石力学与工程学报，1997，1（6）：590-594. Ma Qinyong .Definition of hole space and burden in smooth blasting［J］.Chinese Journal of Rock Mechanics and Engineering，1997，1（6）：590-594.

9	戴俊，杨永琦 .损伤岩石周边控制爆破分析［J］.中国矿业大学学报，2000，29（5）：54-57. Dai Jun ， Yang Yongqi .Analyses of controlled perimeter blasting in damaged rock［J］.Journal of China University of Mining and Technology，2000，29（5）：54-57.

10	付玉华，李夕兵，董陇军 .损伤条件下深部岩体巷道光面爆破参数研究［J］.岩土力学，2010，31（5）：1420-1426. Fu Yuhua ， Li Xibing ， Dong Longjun .Analysis of smooth blasting parameters for tunnels in deep damaged rock mass［J］.Rock and Soil Mechanics，2010，31（5）：1420-1426.

11	戴俊 .深埋岩石隧洞的周边控制爆破方法与参数确定［J］.爆炸与冲击，2004，24（6）：493-498. Dai Jun .The controlled contour blasting technique and its parameter determination for rock tunnel at depth［J］.Explosion and Shock Waves，2004，24（6）：493-498.

12	戴俊，杨永琦 .光面爆破相邻炮孔存在起爆时差的炮孔间距计算［J］.爆炸与冲击，2003，23（3）：610-613. Dai Jun ， Yang Yongqi .Calculation of shot hole separation in smooth blasting［J］.Explosion and Shock Waves，2003，23（3）：610-613.

13	岳中文，郭洋，王煦，等 .起爆时差对孔间裂纹扩展影响的动焦散实验研究［J］.岩石力学与工程学报，2015，34（11）：2293-2300. Yue Zhongwen ， Guo Yang ， Wang Xu ，et al .Dynamic caustics study of influence of delayed initiation on crack propagation between boreholes［J］.Chinese Journal of Rock Mechanics and Engineering，2015，34（11）：2293-2300.

14	李夕兵 .凿岩爆破工程［M］.长沙：中南大学出版社，2011. Li Xibing .Rock Drilling and Blasting Engineering ［M］.Changsha：Central South University Press，2011.

15	胡正平 .预留光爆层全断面一次爆破在光爆中的应用［J］.爆破器材，1992（3）：23-25，27. Hu Zhengping .Application of full face blasting of pre-arranged layer for smooth blasting［J］.Explosive Materials，1992（3）：23-25，27.

16	张志和 .浅埋隧道下穿城镇减震控制爆破施工技术［J］.隧道建设，2010，30（增1）：376-382. Zhang Zhihe .Vibration-reducing blasting technology applied in construction of shallow tunnels passing underneath town areas ［J］.Tunnel Construction，2010，30（Supp.1）：376-382.

17	张俊兵，胡国伟 .浅埋不良地质条件下小净距隧道掘进与减振爆破技术研究［J］.铁道工程学报，2011，28（1）：51-57. Zhang Junbing ， Hu Guowei .Research on driving and damping blast technologies for construction of shallow small clear-distance tunnel under favorable geological conditions ［J］.Journal of Railway Engineering Society，2011，28（1）：51-57.

18	杨仁树，丁晨曦，王雁冰，等 .爆炸应力波与爆生气体对被爆介质作用效应研究［J］.岩石力学与工程学报，2016，35（增2）：3501-3506. Yang Renshu ， Ding Chenxi ， Wang Yanbing ，et al .Action-effect study of medium under loading of explosion stress wave and explosion gas［J］.Chinese Journal of Rock Mechanics and Engineering，2016，35（Supp.2）：3501-3506.

19	Wilson W H .An Experimental and Theoretical Analysis of Stress Wave and Gas Pressure Effects in Bench Blasting ［D］.Maryland：University of Maryland，1987.

20	邓建勋，罗芳 .光面爆破参数设计之探讨［J］.煤矿安全，1994（1）：40-42，48. Deng Jianxun ， Luo Fang .Discussion on the design of smooth blasting parameters［J］.Safety in Coal Mines，1994（1）：40-42，48.

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