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盾构过上浮基岩、孤石预处理对策
引用本文:杨志刚. 盾构过上浮基岩、孤石预处理对策[J]. 隧道建设, 2012, 32(4): 557-560. DOI: 10.3973/j.issn.1672-741X.2012.04.022
作者姓名:杨志刚
作者单位:中铁南方投资发展有限公司,广东深圳518000
摘    要:以深圳地铁5号线宝翻盾构区间为例,介绍盾构机顺利通过孤石和基岩区的预处理对策。根据设计地质资料,从盾构施工前加密地质补勘入手,摸清对盾构机掘进存在风险的孤石、上浮基岩等详细参数,然后根据盾构的性能及以往类似地质的经验教训,在本区间依次采取调线调坡绕过、加固处理后通过、控制盾构机参数直接通过等方法,盾构掘进过程中没有发生一起非计划停机,有效保证了工期,在5号线全线施工中起到了示范作用。

关 键 词:地铁  盾构  基岩  孤石  预处理  调线调坡  袖阀管注浆加固  掘进参数
收稿时间:2012-03-06

Pre-treatment of Bedrock and Boulders before Shield Boring
YANG Zhigang. Pre-treatment of Bedrock and Boulders before Shield Boring[J]. Tunnel Construction, 2012, 32(4): 557-560. DOI: 10.3973/j.issn.1672-741X.2012.04.022
Authors:YANG Zhigang
Affiliation:YANG Zhigang ( China Railway South Investment & Development Limited Company, Shengzhen 5 i8000, Guangdong, China)
Abstract:The pretreatment of boulders and bedrock before shield boring is discussed, with the boring of Bao' an Cen tral Station to Fanshen Station section on Line 5 of Shenzhen Metro as an example. The details of the boulders and bed rock that may cause risks for shield boring are obtained by means of additional geological predictions. Countermeasures such as alignment adjustment and gradient adjustment, reinforcement and shield boring parameter control are take to cope with the boulders and bedrock. In the end, successful boring is achieved and the construction schedule is guaranteed.
Keywords:Metro  shield machine  bedrock  boulder  pre-treatment  alignment adjustment  gradient adjustment  So-letanche grouting  boring parameter
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