土工基础

土工基础 ›› 2020, Vol. 34 ›› Issue (1): 4-08.

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富水岩溶地层衡盾泥带压开仓换刀技术及应用

张德文1，魏庆温1，黄 兴2
  

  1. （1.中铁十四局集团隧道工程有限公司，济南 250014；2.中国科学院武汉岩土力学研究所，武汉 430071）
  • 收稿日期:2019-04-03 修回日期:2019-05-25 出版日期:2020-04-20 发布日期:2020-04-20
  • 作者简介:张德文(1980-)，男，高级工程师，研究方向为岩土工程。

Pressurized Chamber Inspection and Cutter Replacement with Shield Protection Slurry in Saturated Karst Terrain

ZHANG Dewen1, WEI Qingwen1, HUANG Xing2   

  1. (1.China Railway 14th Bureau Group Co. Ltd., Jinan 250014;
    2.Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071)
  • Received:2019-04-03 Revised:2019-05-25 Online:2020-04-20 Published:2020-04-20

摘要： 依托济南地铁R1号线地下段区间风井至大杨站盾构区间灰岩段富水岩溶地层的工程施工，介绍了衡盾泥带压开仓技术的应用背景、基本原理、主要流程和控制要点，通过分析该盾构掘进区段内掘进控制、刀具选型、渣土改良、刀具更换和设备维护的工程经验，给出了相应建议。有助于解决在节理裂隙强烈发育、岩溶水补给异常丰富的地层中安全带压开仓、高效检查及更换盾构刀具的高风险问题。


关键词: 衡盾泥, 带压开仓, 岩溶地层, 裂隙岩体, 刀具更换

Abstract: This paper is based on the experience when excavating the waterrich karst stratum of the limestone section in the Jinan Metro R1 Line from Fengjing Station to Dayang Station. The application background, basic principle, main process and key technology for the pressurized chamber inspection using shield protection mud are introduced in details. By analyzing the experience for operation control, cutter selection, soil improvement, cutter replacement and equipment maintenance, some recommendations are proposed. This paper helps to solve the highrisk problems for the safe pressured chamber inspection and the effective cutter replacement in highly jointed/fractured and waterrich karst stratums.

Key words: Shield Protection Slurry, Pressurized Chamber Inspection, Karst Terrain, Fractured Rock Mass, Cutter Replacement

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