1018
2023·5·BuildingConstruction
--
SCIENTIFI
CRESEARCH
科
研
学
深埋调蓄隧道盾构管片密封垫结构
及安装工艺试验研究
张弛
上海隧道工程有限公司
上海
200137
摘要：为探究大埋深、高水压盾构隧道管片防水性能，以苏州河深层排水调蓄隧道为建设背景，重点研究了盾构管片
密封垫结构设计和安装工艺，分析了锚固式密封垫结构设计问题、安装工艺类型、缺陷管片修复方案及成品保护方
案。研究结果表明：由于三元乙丙橡胶不可压缩，管片拼装困难，导致管片接头交会处混凝土被压碎，隧道渗水性增
加。基于工程实践经验和具体工程地质条件，针对性地提出了2种密封垫结构设计方案。在锚固式密封垫安装过程中，
提出了一种磁吸式方案，相较于自锚式和真空吸附式，其安装效率和安装步骤有待提高。基于锚固式密封垫安装试
验，混凝土试验管片的浇筑质量不一，主要有密封垫嵌入完好及密封垫角部被拉出2种情况，后者主要是由于混凝土振
捣过程不充分导致的。基于此，研究提出了更为合理的自锚式密封垫设计尺寸和系统性的缺陷修复方案。提出了采用
锚固式密封垫方案的盾构隧道管片成品保护方案。
关键词：盾构管片密封性；锚固式密封垫；结构设计；安装工艺；深埋调蓄隧道
中图分类号：
TU99
文献标志码：
A
文章编号：1004-1001(2023)05-1018-06
DOl:10.14144/j.cnki.jzsg.2023.05.057
Experimental Study on Sealing Gasket Structure and Installation Technology
of Shield Segment inDeep-buried Regulation and StorageTunnel
ZHANGChi
Shanghai Tunnel Engineering Corp., Ltd., Shanghai 200137, China
Abstract: In order to explore the waterproof performance of shield tunnel segment with large buried depth and high
water pressure, taking the construction of Suzhou River deep drainage and storage tunnel as the background, the
structural design and installation process of shield segment sealing gasket are studied, and the structural design
problems of anchored sealing gasket, installation process types, repair scheme of defective segment and protection
scheme of finished products are analyzed. The results show that due to the incompressibility of EPDM, it is difficult to
assemble the segments, which leads to the crushing of concrete at the intersection of segment joints and the increase of
tunnel seepage. Based on practical engineering experience and specific engineering geological conditions, two kinds
of sealing gasket structure design schemes were proposed. In the process of installing the anchored sealing gasket,
a magnetic suction type scheme is proposed. Compared with the self-anchored type and vacuum suction type, its
installation efficiency needs to be improved. Based on the installation test of anchored sealing gasket, the pouring quality
of concrete test segments is different, mainly including two situations: the sealing gasket is embedded well and the
sealing gasket corner is pulled out, the latter is mainly caused by insufficient concrete vibration process. Based on this,
a more reasonable design size of self-anchored sealing gasket and a systematic defect repair scheme were proposed.
The finished shield tunnel segment protection scheme using the anchored sealing gasket scheme is proposed.
Keywords: shield segmen
深埋调蓄隧道盾构管片密封垫结构及安装工艺试验研究（论文）.pdf
