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隧道建设(中英文) ›› 2018, Vol. 38 ›› Issue (10): 1723-1728.DOI: 10.3973/j.issn.2096-4498.2018.10.017

• 施工技术 • 上一篇    下一篇

孔外延期网路在隧道侧穿危楼爆破中的应用研究

尹文纲1, 王海亮2,*, 张祖远3, 张富强1   

  1. (1. 中铁三局集团有限公司,山西 太原 030000; 2. 山东科技大学矿山灾害预防控制省部共建教育部重点实验室, 山东 青岛 266590; 3. 江西省水利投资集团有限公司, 江西 南昌 330029)
  • 收稿日期:2018-03-14 修回日期:2018-04-23 出版日期:2018-10-20 发布日期:2018-10-26
  • 作者简介:尹文纲(1977—),男,山西平遥人,2005年毕业于西南交通大学,铁路与道路工程专业,本科,高级工程师,主要从事地铁、隧道与地下工程施工技术管理等相关工作。Email: yinwengang2000@163.com。*通信作者: 王海亮, Email: A405405@263.net。

Application of Outerhole Delay Detonating Circuit to Blasting  Construction of Tunnel Laterally Crossing Dangerous Building

YIN Wengang1, WANG Hailiang2,*, ZHANG Zuyuan3, ZHANG Fuqiang1   

  1. (1. China Railway No.3 Engineering Group Co., Ltd., Taiyuan 030000, Shanxi, China; 2. Key Laboratory of  Mine Disaster Prevention and Control, Shandong University of Science & Technology, Qingdao 266590,  Shandong, China; 3. Jiangxi Province Water Resources Investment Group, Nanchang 330029, Jiangxi, China)
  • Received:2018-03-14 Revised:2018-04-23 Online:2018-10-20 Published:2018-10-26

摘要:

为解决在单孔单段起爆时因普通导爆管雷管段数的限制需分次起爆的问题,针对隧道近距离侧穿危楼爆破开挖时提出一种新的起爆网路,即利用20段普通导爆管雷管进行多组之间的孔外延期,同时利用3段普通导爆管雷管在每组内部之间进行孔外延期。现场试验表明,该起爆网路可以使起爆次数从原来的5次降至2次。且现场振动监测数据显示,振速峰值与原来分次爆破的振速峰值基本处于同一水平,振速平均峰值较原起爆网路提高5%,并未发现有振动叠加的现象。

关键词: 隧道侧穿危楼爆破, 孔外延期, 振动, 起爆网路

Abstract:

The separated detonation of singlehole singlesection blasting should be carried out due to the limit of number of detonators. Hence, a new detonation circuit is proposed for the blasting excavation of tunnel laterally crossing dangerous building, i.e. using 20 sections of common detonator to carry out outerhole delay detonating between different detonation circuits and 3 sections of common detonators to carry out outerhole delay detonating in each detonation circuit. The field testing results show that by adopting the new detonation circuit: (1) the detonating time is reduced by 3 (from 5 to 2); (2) vibration peak of the new detonation circuit is almost as the same as that of original one; (3) the average vibration peak increases by 5%; and (4) no vibration superposition is identified.

Key words: tunnel laterally crossing dangerous building, outerhole delay detonating, vibration, detonating circuit

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