Abstract：Research purposes: At present, shield tunnelling machine has been applied widely in variable fields of civil engineering, but it is seldom found the shield tunnelling technology was applied to tunnelling in long-distance hard rock for subway construction. The research in this paper was made mainly on the adaptation of shield tunnelling machine, the problem that probably occurred and the measures that should be taken for tunnelling in long-distance hard rock.
Research methods: The information was collected on the relevant data, problems and countermeasures taken in construction through the construction example of tunnelling in long-distance hard rock area of Guangzhou Metro. Also the analysis was made on this information.
Research results: It was shown from the example mentioned above that the tunnelling by shield tunnelling machine in long-distance hard rock area was feasible and the problems could be solved by taking some measures.
Research conclusions: Shield tunnelling machine could tunnel smoothly because the hard rock in this area had small fissures and most fissures had been filled by fine quartz vein. It could be said although the single axle of rock had good compression, if fissure developed, shield tunnelling machine could tunnel smoothly in hard rock area and the tunnelling speed was faster than that of other machines through selecting right type of shield tunnelling machine and equipping right cutter head and bit tool.
王小忠. 盾构机在长距离硬岩中掘进的探讨[J]. 铁道工程学报, 2006, 23(4): 52-56.
WANG Xiao-zhong. Exploration on Tunnelling by Shield Machine in Long-distance Hard Rock Area. 铁道工程学报, 2006, 23(4): 52-56.
2006, Vol. 23 
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