Abstract:

Informationaided construction is executed in the trial section of No. 7 inclined shaft of Muzhailing tunnel, which is located in carbonaceous slate strata with high ground stress, to simulate the construction of the main tunnel so as to accumulate experience for the main tunnel construction. Analysis is made in terms of construction, support, internal force of the primary support structure and deformation development. Conclusion is drawn that the deformation can be effectively controlled if countermeasures, such as supporting step by step and layer by layer, improving the strength of the steel ribs, strengthening the rockbolting and perfect construction techniques, are taken. 

Key words: Muzhailing tunnel, inclined shaft, trial section, informationaided construction, carbonaceous slate