青岛胶州湾海底隧道围岩注浆加固技术

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Abstract With a view to water inflow of the fractured fault zone occurred in the Qingdao Jiaozhou bay subsea tunnel construction and via theoretical analysis，laboratory and field test as well as practical application，the experimental investigation on general cement paste，ultrafine cement paste，specially made sulphoaluminate cement paste and cement-sodium silicate double liquid are all conducted；and the necessity of advance pre-grouting with the material of ultrafine cement is obtained. Moreover，the key parameters of grouting have been ascertained and confirmed in practice，i.e. the grout diffusion radius is 1.5–2.0 m，the terminate pressure in grouting is 3–4 MPa，the reinforced ply of grouting is 5–6 m. Through the experimental comparison of multistage forward grouting，multistage retrograde grouting and one-off grouting，the optimal grouting method is determined；i.e. adopting the multistage forward way of one-off full hole grouting. In the construction process，a system of coordinating informationized hole-drilling grouting equipments is probed and developed with the three-boom drill jumbo and top-speed pulper for slurrying，high-pressure grouting pump for grouting and grouting recorder automatically logging the grouting parameters. By implementing the strategy of drilling and grouting conducted at each deployed position simultaneously，drilling and grouting operated on a parallel basis，a highly efficient and informationized advance pre-grouting is thus realized. The grouting effectiveness is mainly focused on the hydraulic discharge of drilling holes(according to the design requirements，hydraulic discharge per linear meter should not exceed 0.15 L/min and local discharge shall be no more than 3 L/min)，and assisted in packer test of hole，which are further supplemented by tunnel seismic prediction(TSP) geophysical prospecting comparison，drilling TV analysis，excavation and tunnel face analysis as well as P-Q-T curve analysis. By the practical grouting for 31 stages，the above mentioned materials，parameters and grouting methods are all proved to be feasible and reliable.

Key words： tunnelling engineering subsea tunnel pre-grouting grouting reinforcement technique water inflow

Received: 11 October 2010

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https://rockmech.whrsm.ac.cn/EN/Y2011/V30/I4/790

[1] 孙钧. 海底隧道工程设计施工若干关键技术的商榷[J]. 岩石力学与工程学报，2006，25(8)：1 513–1 521.(SUN Jun. Discussion on some key technical issues for design and construction of undersea tunnels[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(8)：1 513–1 521.(in Chinese)) [2] 郭陕云. 关于我国海底隧道建设若干工程技术问题的思考[J]. 隧道建设，2007，27(5)：1–5.(GUO Shanyun. Comments on some engineering and technology issues related to subsea tunnel construction in China[J]. Tunnel Construction，2007，27(5)：1–5.(in Chinese)) [3] 王梦恕. 水下交通隧道发展现状与技术难题：兼论“台湾海峡海底铁路隧道建设方案”[J]. 岩石力学与工程学报，2008，27(11)：2 161–2 172.(WANG Mengshu. Current developments and technical issues of underwater traffic tunnel：discussion on construction scheme of Taiwan strait subsea railway tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(11)：2 161–2 172.(in Chinese)) [4] 薛翊国，李树才，苏茂鑫，等. 青岛胶州湾海底隧道含水断层综合超前预报实践[J]. 岩石力学于工程学报，2009，28(10)：2 081–2 087. (XUE Yiguo，LI Shucai，SU Maoxin，et al. Practice of comprehensive early-warming geological prediction on aquifer fault in Qingdao Jiaozhou bay subsea tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(10)：2 081–2 087.(in Chinese)) [5] 崔玖江. 水下隧道注浆堵水[M]. 北京：人民铁道出版社，1978：66–78.(CUI Jiujiang. Grouting and water shutoff in the underwater tunnel[M]. Beijing：People?s Railway Publishing House，1978：66–78.(in Chinese)) [6] 张成满，殷永法，王慷慨. 国内隧道围岩注浆设备的现状及选型[J]. 铁道建筑技术，1997，(5)：23–27.(ZHANG Chengman，YIN Yongfa，WANG Kangkai. Present situation and selection of the tunnel-grouting equipments in China[J]. Railnay Corstruction Technology，1997，(5)：23–27.(in Chinese)) [7] 王明胜，王全胜. 海底隧道超前预注浆注浆压力选择研究[J]. 现代隧道技术，2010，47(2)：15–18.(WANG Mingsheng，WANG Quansheng. Discussion on reasonable pre-grouting pressures for Qingdao Jiaozhou bay subsea tunnel[J]. Modern Tunnelling Technology，2010，47(2)：15–18.(in Chinese)) [8] 王月华，孙鹏志，韩志远. 岩石隧洞工程的预灌浆与后灌浆[J]. 水利水电技术，2006，37(4)：31–34.(WANG Yuehua，SUN Pengzhi，HAN Zhiyuan. Pre-grouting and after-grouting for rock tunnelling engineering[J]. Water Resources and Hydropower Engineering，2006，37(4)：31–34.(in Chinese)) [9] 王乾，荆永军. 胶州湾海底隧道防排水措施研究[J]. 隧道建设，2009，29(增2)：52–57.(WANG Qian，JING Yongjun. Study on waterproof and drainage measures of Jiaozhou bay subsea tunnel[J]. Tunnel Construction，2009，29(Supp.2)：52–57.(in Chinese))