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Difficult ground conditions affecting performance of EPB‐TBMs
In complex geology, especially where EPB‐TBMs are used, a methodology based on past experience is necessary for estimating tunneling performance and daily advance rates in highly fractured rock, in sandy‐silt, silty‐sand formations and anywhere a frequent change in transition zones shows up. This chapter gives a summary of such methodology and depicts a comparison of the predicted and actual results made for Uskudar–Umraniye–Cekmekoy–Sancaktepe metro tunnels that were excavated in complex geology with dyke inclusions. The methodology is based on predicting field specific energies and comparing cutting power of EPB‐TBMs. The predicted daily advance rates are compared with field values. The model developed is also verified using some field results from Mahmutbey–Mecidiyekoy metro tunnels.
Difficult ground conditions affecting performance of EPB‐TBMs
In complex geology, especially where EPB‐TBMs are used, a methodology based on past experience is necessary for estimating tunneling performance and daily advance rates in highly fractured rock, in sandy‐silt, silty‐sand formations and anywhere a frequent change in transition zones shows up. This chapter gives a summary of such methodology and depicts a comparison of the predicted and actual results made for Uskudar–Umraniye–Cekmekoy–Sancaktepe metro tunnels that were excavated in complex geology with dyke inclusions. The methodology is based on predicting field specific energies and comparing cutting power of EPB‐TBMs. The predicted daily advance rates are compared with field values. The model developed is also verified using some field results from Mahmutbey–Mecidiyekoy metro tunnels.
Difficult ground conditions affecting performance of EPB‐TBMs
Bilgin, Nuh (author) / Copur, Hanifi (author) / Balci, Cemal (author)
2016-10-28
18 pages
Article/Chapter (Book)
Electronic Resource
English
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