盾构在水平冻结加固区小半径曲线始发技术

李义华，李志军，孟海峰

doi:10.3973/j.issn.1672-741X.2012.04.018

隧道建设 >

2012 , Vol. 32 >Issue 4: 531 - 536

DOI: https://doi.org/10.3973/j.issn.1672-741X.2012.04.018

施工技术

盾构在水平冻结加固区小半径曲线始发技术

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(中铁隧道集团二处有限公司，河北三河 065201)

李义华(1969—)，男，河南平舆人，2009年毕业于河北工业大学电子信息专业，本科，工程师，现从事施工管理工作。

收稿日期: 2012-03-27

修回日期: 2012-05-24

网络出版日期: 2012-10-16

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Launching Technologies for Shield Machine on Curve with Small Radius in Soil Consolidated by Horizontal Freezing Method

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(The 2nd Engineering Co., Ltd. of China Railway Tunnel Group, Sanhe 065201, Hebei, China)

Received date: 2012-03-27

Revised date: 2012-05-24

Online published: 2012-10-16

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摘要

无锡地铁1号线江海路站—火车站区间盾构始发处在半径360 m曲线上，且始发端头上部有河道、桥梁及多条大直径市政管线，盾构始发处在多个风险高度集中地段，风险和施工难度极大。为保证盾构顺利始发，并确保上部河流、桥梁和管线的安全，采用初始段的割线始发技术，避免小半径曲线纠偏造成的超挖；采用水平冻结加固技术并通过采取蒸汽解冻配合割线始发的综合技术通过冻结加固区，保证了盾构的安全顺利始发。

关键词： 盾构; 水平冻结加固; 割线始发; 小半径曲线

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李义华，李志军，孟海峰 . 盾构在水平冻结加固区小半径曲线始发技术[J]. 隧道建设, 2012 , 32(4) : 531 -536 . DOI: 10.3973/j.issn.1672-741X.2012.04.018

Abstract

The shield launching section of Jianghai Road StationRailway Station section on No.1 line of Wuxi Metro is on a curve with 360 m radius. There are rivers, bridges and largediameter municipal pipelines above the shield launching head. There are many risks and great construction difficulties. Secant launching technology at primary section is adopted, so as to guarantee the successful launching and the safety of the river, bridges and pipelines, and to avoid overbreak. Horizontal freezing technology and consolidated section passing through technology by means of steam thawing combined with secant launching technology are used.

Key words： shield machine; soil consolidation; horizontal freezing method; secant launching; curve with small radius

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