Abstract With the construction concept innovation in conventional tunnelling changing from“passive supporting” to“active controlling”, some focused hot issues such as monitoring measurement, ground improvement, integration of the double-shell lining and structural design models are discussed in this paper. Meanwhile, in response to the tunnelling challenges in two specific geological environments namely the squeezing ground with high initial stress and high waterhead groundwater, treatment measures of“rock bolting+constant reaction support”and“rock grouting+lining drainage”can be used respectively.That is to say, for the large amount release (of stress or hydraulic potential) induced by excavation, only the “yieldingc principle”instead of the“resistance principle”is feasible to realize the harmony between tunnelling and geological body.
Abstract：
With the construction concept innovation in conventional tunnelling changing from“passive supporting” to“active controlling”, some focused hot issues such as monitoring measurement, ground improvement, integration of the double-shell lining and structural design models are discussed in this paper. Meanwhile, in response to the tunnelling challenges in two specific geological environments namely the squeezing ground with high initial stress and high waterhead groundwater, treatment measures of“rock bolting+constant reaction support”and“rock grouting+lining drainage”can be used respectively.That is to say, for the large amount release (of stress or hydraulic potential) induced by excavation, only the “yieldingc principle”instead of the“resistance principle”is feasible to realize the harmony between tunnelling and geological body.
WANG Jianyu
.For the Harmony between Tunnelling and Geological Body ——Discussion on Focused Hot Issues in Conventional Tunnelling[J] MODERN TUNNELLING TECHNOLOGY, 2023,V60(4): 1-5
2023, Vol. 60 