Abstract：Research purposes：After completion of the double primary supports for solution cavity 602 of Yesanguan Tunnel on Yichang-Wanzhou Railway, the high-pressure water formed in the solution cavity to breakdown the double primary supports because of the heavy rainfall. The series of methods and measures were adopted and taken for treating the burst port, such as lowering water pressure by building the high drainage branch tunnel, plugging water and consolidating block stone debris at burst port by grouting and adopting advanced pipe-shed support.
Research conclusions：The block stone debris can be consolidated by grouting and pipe-shed support. The time of drilling through an I20-beam is between 30 mins and 90 mins when using a driller with the torque of1 200 N·m to 2 000 N·m and rotational speed of 300 rpm to 500 rpm. The grouting under the local condition of water drainage can be controlled by using compound grouting material system of sulphoaluminate cement slurry and ordinary cement-soluble glass double slurry, following the grouting sequences of from down to up, from outside to inside and grouting every other hole, conducting sectional grouting with reasonable section length and combing a certain grouting number with a certain grouting pressure. After the block stone debris is improved by grouting, it can be used as an advanced φ76 mm pipe-shed support to ensure the construction security at burst port.
张 梅；张民庆；孙国庆. 宜万铁路野三关隧道高压富水充填溶腔溃口处理技术[J]. 铁道工程学报, 2010, 27(3): 81-86.
ZHANG Mei, ZHANG Min-qing, SUN guo-qing. Technology for Treating Burst Port of Filling Solution Cavity with High-pressure and Rich Water of Yesanguan Tunnelon Yichang-Wanzhou Railway. 铁道工程学报, 2010, 27(3): 81-86.
Zhang Minqing, Sun Guoqing, Zou Chong, etc. Construction Technology of Yuanliangshan 2#Cave[J]. Journal of Railway Engineering Society, 2004(4): 68-76 /38.
Zhang Minqing, Huang Hongjian, Yin Huailian. Grouting to Stop the Water Ingress from a Water-contained Karst Depression in Qiyueshan Tunnel[J]. Modern Tunnelling Technology, 2004(3): 47 -50.
Zhang Chengping, Zhang Dingli, Wang Mengshu, etc. Study on Appropriate Parameters of Grouting Circle for Tunnels with Limiting Discharge Lining in High Water Pressure and Water-enriched Region[J]. Chinese Journal of Rock Mechanics and Engineering, 2007(11): 2270 -2276.
Wu Shiyong, Wang Jian, Wang Ge. Underground Water and Its Treatment Strategy in Auxiliary Tunnels of Jinping Hydropower Project[J]. Chinese Journal of Rock Mechanics and Engineering, 2007 (10): 1059 -1067.
[ 8 ] 姜玉松.现代注浆技术的开拓应用及发展[J]. 现代隧道技术, 2008(2): 6 -9. Jiang Yusong. Application and Development of Modern Grouting Technology[J]. Modern Tunnelling Technology, 2008(2): 6 -9.
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