盾构隧址区无自由面基岩孤石爆破预处理技术炸药单耗确定研究

刘洪震

doi:10.3973/j.issn.1672-741X.2015.03.004

隧道建设 >

2015 , Vol. 35 >Issue 3: 215 - 219

DOI: https://doi.org/10.3973/j.issn.1672-741X.2015.03.004

研究与探索

盾构隧址区无自由面基岩孤石爆破预处理技术炸药单耗确定研究

刘洪震

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（中铁隧道集团科学技术研究院有限公司，河南洛阳 471009）

刘洪震(1978—)，男，河南夏邑人，1999年毕业于安微理工大学，弹药工程与爆炸技术专业，本科，高级工程师，主要从事隧道与地下工程研究方面的工作。

收稿日期: 2014-12-17

修回日期: 2015-01-29

网络出版日期: 2015-03-20

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Study on Determination of Unit Consumption of Explosives  in Pretreatment of Bedrock/boulders along Alignment of  Shieldbored Tunnel without Free Surface

LIU Hongzhen

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(Institute of Science and Technology Co., Ltd., China Railway Tunnel Group, Luoyang 471009, Henan, China)

Received date: 2014-12-17

Revised date: 2015-01-29

Online published: 2015-03-20

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摘要

在盾构隧道施工过程中，如在隧道隧址区内遇有基岩孤石，盾构刀盘无法直接破碎处理，必须提前处理这些基岩孤石。以广东台山核电站引水隧洞基岩孤石爆破破碎处理为例，通过理论推导、现场试验，得到了用于该爆破设计的炸药单耗计算公式。研究结果显示：推导出的无自由面岩石爆破破碎炸药单耗经验计算公式，通过实际爆破工程进行印证，取得了成功。

关键词： 盾构; 无自由面; 基岩; 孤石; 爆破

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刘洪震 . 盾构隧址区无自由面基岩孤石爆破预处理技术炸药单耗确定研究[J]. 隧道建设, 2015 , 35(3) : 215 -219 . DOI: 10.3973/j.issn.1672-741X.2015.03.004

Abstract

The bedrock/boulders along the alignment of shield tunneling cannot be excavated directly by the cutterhead of the shield, therefore they have to be treated in advance. In the construction of the diversion tunnel of Taishan Nuclear Plant in Guangdong, China, the bedrock/boulders along the tunnel alignment have to be blasted in advance. In the paper, the unit consumption of the explosives for the blasting is studied by means of theoretical deduction and field test and a calculation formula is obtained. The formula has been used in the engineering practice and good result has been achieved.

Key words： shield; without free surface; bedrock; boulder; blasting

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