盾构法施工海底隧道孤石及基岩侵入体爆破施工风险分析

游永锋; 梁奎生

doi:10.3973/j.issn.1672-741X.2012.z2.006

隧道建设 >

2012 , Vol. 32 >Issue 增刊2: 31 - 36

DOI: https://doi.org/10.3973/j.issn.1672-741X.2012.z2.006

研究与探索

盾构法施工海底隧道孤石及基岩侵入体爆破施工风险分析

游永锋 ,
梁奎生

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(中铁隧道股份有限公司，郑州 450003)

游永锋(1981—)，男，山西太谷人，2004年毕业于兰州交通大学隧道与地下工程专业，本科，工程师，从事隧道施工技术管理工作。

收稿日期: 2012-07-13

修回日期: 2012-09-13

网络出版日期: 2013-02-19

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Risk Analysis on Blasting of Boulder and Bedrock Intrusion in Seacrossing Tunnel Bored by Shield Machine

YOU Yongfeng ,
LIANG Kuisheng

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(China Railway Tunnel Stock Co., Ltd., Zhengzhou 450003, Henan,China)

Received date: 2012-07-13

Revised date: 2012-09-13

Online published: 2013-02-19

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摘要

针对复合地层中，开挖断面内局部高强度基岩及孤石侵入体，盾构自身刀具无法有效破岩施工难点，在综合分析地面引孔下药施爆的控制钻爆法，控制破碎碴块体量基础上，对爆破产生的影响因素进行系统归类，建立孤石及基岩侵入体爆破施工风险综合评价指标体系，并结合层次分析法和模糊集法分别确定各级因素权重及隶属函数，评估其风险接受等级。实践证明：在设计和施工上采取合理的措施后，基岩及海域孤石地层预爆破风险评估切实可行的，风险规避措施有效。

关键词： 海底隧道; 孤石; 基岩侵入体; 控制爆破; 模糊层次分析; 风险分析

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游永锋 , 梁奎生 . 盾构法施工海底隧道孤石及基岩侵入体爆破施工风险分析[J]. 隧道建设, 2012 , 32(增刊2) : 31 -36 . DOI: 10.3973/j.issn.1672-741X.2012.z2.006

Abstract

The rock breaking efficiency of cutter tools of shield machine is low in complex stratum with local high intension bedrocks and boulders. The controlled drilling and blasting method and controlled broken rocks are synthetically analyzed. The influences induced by blasting are systematically classed. The evaluation system of blasting risks of boulder and bedrock intrusion is established. The factor weight and membership function of each risk grade are determined by means of APH method and fuzzy method, so as to estimate the risk acceptable grade. The practice shows that the mentioned methods are reliable and effective.

Key words： seacrossing tunnel; boulder; bedrock intrusion; controlled blasting; fuzzy analytic hierarchy process; risk analysis

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