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锦屏II级水电站引水隧洞由于埋深大、地应力高,具备发生强岩爆的条件,岩爆发生位置大多在掌子面和TBM护盾附近,不仅给TBM刀盘和主轴承带来很大的冲击,同时给现场的人员带来很大的安全威胁,为获得TBM在岩爆段的掘进参数,针对TBM前方断面形式从理论上计算了刀盘的开挖推力大小,经过现场TBM开挖导洞断面的试验,取得了TBM开挖导洞的一些有价值的掘进参数,为后期TBM通过岩爆段和类似项目施工积累了经验。
Jinping II hydropower station diversion tunnel due to the large depth, high stress, with the occurrence of strong rock burst conditions, rock burst occurred mostly in the face and TBM shield near the shield, not only to bring TBM cutter and the main bearing is very In order to obtain the tunneling parameters of TBM in the rock burst section, the excavation thrust of the cutterhead is theoretically calculated for the front section of the TBM. After the site TBM is opened Dug tunnel section of the test, obtained TBM excavation of the tunnel leading some valuable parameters, for the latter part of TBM through rock burst and other projects have accumulated experience in construction.