敞开式TBM断层破碎带脱困技术

董泗龙

doi:10.3973/j.issn.1672-741X.2016.03.013

隧道建设 >

2016 , Vol. 36 >Issue 3: 326 - 330

DOI: https://doi.org/10.3973/j.issn.1672-741X.2016.03.013

施工技术

敞开式TBM断层破碎带脱困技术

董泗龙

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（中铁隧道股份有限公司，河南郑州 450001）

董泗龙（1981—），男，山东菖南人，2003年毕业于山东科技大学,土木工程专业,本科，工程师，现从事隧道施工技术管理工作。Email: 35255329@qq.com。

收稿日期: 2015-09-06

修回日期: 2016-01-28

网络出版日期: 2016-03-30

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Jam Releasing Technologies for Opentype TBM Bored in Fault and Fracture Zones

DONG Silong

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(China Railway Tunnel Stock Co., Ltd., Zhengzhou 450001, Henan, China)

Received date: 2015-09-06

Revised date: 2016-01-28

Online published: 2016-03-30

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摘要

某供水工程敞开式TBM掘进在穿越断层时发生坍塌，刀盘被掌子面坍塌体掩埋，护盾被压住，TBM被困。为安全、快速地使TBM脱困，迅速恢复生产，在脱困过程中首先加固已施工段支护，在保证后方安全的前提下，进行前方掌子面和护盾上部加固，采用化学注浆法固结刀盘前方围岩和护盾上方中管棚超前支护法进行围岩超前支护、加固，然后清除刀盘刮渣孔及切口环内虚渣，使TBM顺利脱困，总用时20.5 d。通过这些方法的使用，达到了TBM安全快速脱困，迅速恢复生产的目的。

关键词： 供水隧洞; 敞开式TBM; 断层破碎带; 化学注浆; 管棚; 掏渣; 脱困

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董泗龙 . 敞开式TBM断层破碎带脱困技术[J]. 隧道建设, 2016 , 36(3) : 326 -330 . DOI: 10.3973/j.issn.1672-741X.2016.03.013

Abstract

The tunnel boring machine（TBM） is jammed when boring in fault and fracture zones of a waterdiversion project. In order to release the TBM safely and rapidly, a series of technologies, i.e. strengthening the support of constructed sections, reinforcing the area ahead the tunneling face and the upper shield of TBM, reinforcing the surrounding rocks ahead the cutterhead by means of chemical grouting method, advance supporting and reinforcing the upper shield by means of pipe roof method and clearing the muck on the cutterhead, are adopted. Finally, the TMB is successfully released after 205 days.

Key words： waterdiversion tunnel; opentype TBM; fault and fracture zone; chemical grouting; pipe roof; mucking; jam releasing

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