某超大直径盾构工程勘察重难点分析及对策措施
摘要:超大直径盾构隧道技术正在向大深度、大断面、长距离的方向发展。由于隧道断面尺寸大、隧道埋深起伏大，工程地质条件、水文地质条件复杂，会面临复杂的岩土工程问题。以北京东六环改造隧道工程为依托，总结了该大直径盾构工程具有勘察等级高、工程地质水文地质复杂、超深基坑支护及地下水控制难度大等特点，针对勘察重难点采取了标准贯入原位测试，颗粒分析、静止侧压力系数、基床系数等室内物理力学试验查明了场地土层的物理力学性质；进行了水文地质专项勘察，分层观测地下水位、黏性土层孔隙水压力测试、抽水试验及注水试验等提供水文地质参数，为超大直径盾构机选型、刀盘、刀具配置，超大盾构掘进过程中各种施工参数匹配、盾构井支护设计以及地下水控制方案设计提供依据，供同类工程借鉴。
Abstract:With the continuous development of urban municipal construction to ultra deep underground space, super large diameter tunnel construction technology is gradually adopted. At present, the technology of super large diameter shield tunnel is developing in the direction of large depth, large section and long distance. Due to the large cross-section size, large fluctuation of buried depth, complex engineering geological and hydrogeological conditions, complex geotechnical engineering problems will be encountered. Based on the reconstruction tunnel project of Beijing East Sixth Ring Road, the characteristics of the large-diameter shield project, such as high survey level, complex engineering geology and hydrogeology, and great difficulty in ultra deep foundation pit support and groundwater control were summarized. Standard penetration in situ test and indoor physical and mechanical tests such as particle analysis, static lateral pressure coefficient and subgrade bed coefficient have been carried out. A special hydrogeological survey such as layered observation of groundwater level, pore water pressure test of cohesive soil layer, pumping test and water injection test was carried out to provide hydrogeological parameters. All these provided a basis for the selection of super large diameter shield machine, cutter head and cutter configuration, the matching of various construction parameters in the process of super large shield tunneling, the support design of shield shaft and the design of groundwater control scheme. It also provides reference for similar projects.
中文标题：
某超大直径盾构工程勘察重难点分析及对策措施
Analysis and Countermeasures of Key and Difficult Points in the Investigation of a Super Large Diameter Shield Project
作者：
孙常青1, 2,
Sun Changqing1, 2,
作者简介:孙常青，女，1974年生，汉族，山西人，硕士研究生，高级工程师，注册土木工程师（岩土），现从事岩土工程勘察、设计工作。E-mail：sunchangqing401@126.com
通讯地址：
1.北京城建勘测设计研究院有限责任公司，北京 100101 2.城市轨道交通深基坑岩土工程北京市重点实验室，北京 100101
1.BeijingUrbanConstructionExploration&DesignResearchInstituteCo.,Ltd.,Beijing100101,China 2.BeijingKeyLaboratoryofDeepFoundationPitofGeotechnicalEngineeringofRailTransit,Beijing100101,China
中图分类号:P 642
doi:10.3969/j.issn.1007-2993.2022.03.011
出版物：岩土工程技术
收稿日期:2021-10-18
网络出版日期:2022-06-02
刊出日期:2022-06-08
关键词:超大直径,盾构,隧道工程,勘察重难点
Key words:super large diameter,shield machine,tunnel engineering,key and difficult points of investigation
文档包含图片数量：图片(7)张
文档包含表格数量：表格(13)个
参考文献：
[1]王 平. 中国超大直径盾构法隧道市场发展形势分析[J]. 建筑科技,2020,4(1):42-46. doi: 10.3969/j.issn.1007-046X.2020.01.014
[2]傅德明, 周文波. 超大直径盾构隧道工程技术的发展[C]// 第五届中国国际隧道工程研讨会论文集. 上海市土木工程学会, 2011.
[3]肖明清. 国内大直径盾构隧道的设计技术进展[J]. 铁道标准设计,2008,(8):84-87. doi: 10.3969/j.issn.1004-2954.2008.08.028
[4]杨方勤,段创峰,吴华柒,等. 上海长江隧道抗浮模型试验与理论研究[J]. 地下空间与工程学报,2010,(3):454-459.
[5]余暄平,沈永东,凌宇峰,等. 上海长江隧道工程盾构施工技术[J]. 上海建设科技,2007,(8):47-50.
[6]万凯军,李大毛,赵建海. 武汉长江隧道岩土工程勘察难点及措施[J]. 资源环境与工程,2014,28(5):663-665. doi: 10.3969/j.issn.1671-1211.2014.05.012
[7]熊清林,莫衍超. 复杂条件下超大直径城市盾构隧道勘察关键技术探讨—以春风隧道为例[J]. 工程建设与设计,2019,(16):90-91.
[8]索晓明,张继清,杨毅秋. 北京地下直径线大直径盾构隧道技术研究[J]. 中国工程科学,2010,12(12):11-17. doi: 10.3969/j.issn.1009-1742.2010.12.002
[9]刘洪洲. 超大直径盾构机的选型问题[J]. 公路隧道,2006,(1):9-13.
基金项目：
- 文件大小:
- 1.48 MB
- 下载次数:
- 60
-
高速下载
|
|
