Application of the Cohesion Softening–Friction Softening and the Cohesion Softening–Friction Hardening Models of Rock Mass Behavior to Estimate the Specific Energy of TBM, Case Study: Amir–Kabir Water Conveyance Tunnel in Iran

2018 ◽  
Vol 37 (1) ◽  
pp. 375-387 ◽  
Author(s):  
Majid Mirahmadi ◽  
Mohsen Soleiman Dehkordi
Keyword(s):  
Rock Mass ◽  
Specific Energy ◽  
Mass Behavior ◽  
Friction Hardening ◽  
Hardening Models ◽  
Water Conveyance ◽  
Water Conveyance Tunnel

scholarly journals Estimating TBM Specific Energy by Employing the Rock Mass Strain Energy, A Case Study: Karaj – Tehran Water Conveyance Tunnel located in Iran

2021 ◽  
Author(s):  
Majid Mirahmadi
Keyword(s):  
Rock Mass ◽  
Specific Energy ◽  
Strain Energy ◽  
Strain Curve ◽  
Rock Mass Classification ◽  
Geological Strength Index ◽  
Peak Strain ◽  
Water Conveyance ◽  
Mass Classification ◽  
Water Conveyance Tunnel

Abstract Recently energy costs are increasing so it is critical to master the challenge of energy efficiency. Energy consumption for drilling in tunnel Boring Machines (TBMs) is mainly determined by the specific energy. Specific energy is the amount of energy needed to excavate a unit volume of rock mass and is considered one of the important parameters used for performance prediction of TBMs. This study tries to apply the strain energy of a rock mass to develop a new method for foretelling specific energy for TBM. The area under complete stress–strain curve is known as strain energy which is pertinent to the rock mass behavior, pre and post failure properties, peak strain and post peak strain. In this study statistical analysis performed through collected actual data from Karaj Tehran Water Conveyance Tunnel revealed a new relationship between the specific energy used by TBM (SE) and the strain energy. For more detailed study the rock mass classification is performed with respect to the geological strength index and all geological units are then classified in three classes and the specific energy of TBM is predicted based on the strain energy of rock mass for each three classes. The results reveals that two parameters of the specific energy and the strain energy are in a direct relation whose correlation is increased with considering the rock mass classification based on the post peak behavior of rock mass.

Estimation of Rock Mass Squeezing Potential in Tunnel Route (Case Study: Kerman Water Conveyance Tunnel)

2018 ◽  
Vol 37 (3) ◽  
pp. 1671-1685 ◽  
Author(s):  
Farshad Azizi ◽  
Mohammadreza Koopialipoor ◽  
Hasan Khoshrou
Keyword(s):  
Rock Mass ◽  
Water Conveyance ◽  
Kerman Water ◽  
Water Conveyance Tunnel

TBM performance analysis in very strong and massive rocks; case study: Kerman water conveyance tunnel project, Iran

2021 ◽  
pp. 1-13
Author(s):  
Seyed Mahdi Pourhashemi ◽  
Kaveh Ahangari ◽  
Jafar Hassanpour ◽  
Seyed Mosleh Eftekhari
Keyword(s):  
Performance Analysis ◽  
Tbm Performance ◽  
Water Conveyance ◽  
Kerman Water ◽  
Water Conveyance Tunnel

Assessment of groundwater ingress to a partially pressurized water-conveyance tunnel using a conduit-flow process model: a case study in Iran

2020 ◽  
Vol 28 (7) ◽  
pp. 2573-2585
Author(s):  
Hossein Gholizadeh ◽  
Ahmad Behrouj Peely ◽  
Bryan W. Karney ◽  
Ahmad Malekpour
Keyword(s):  
Process Model ◽  
Flow Process ◽  
Pressurized Water ◽  
Conduit Flow ◽  
Water Conveyance ◽  
Water Conveyance Tunnel

Determining the origin of groundwater elements using hydrochemical data (case study: Kerman water conveyance tunnel)

2019 ◽  
Vol 78 (6) ◽  
Author(s):  
Amir Saberinasr ◽  
Massoud Morsali ◽  
Arash Hashemnejad ◽  
Jafar Hassanpour
Keyword(s):  
Hydrochemical Data ◽  
Water Conveyance ◽  
Kerman Water ◽  
Water Conveyance Tunnel
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