Correlation Analysis of Machine Performance Parameters and Rock Mass Properties during Tunnel Boring Machine Excavation Process: A Case Study in Yin-song Headrace Tunnel, China

2021 ◽  
Vol 51 (1) ◽  
pp. 20200639
Author(s):  
Yalong Jiang ◽  
Quansheng Liu ◽  
Bitang Zhu ◽  
Shaolin Pan
Keyword(s):  
Rock Mass ◽  
Tunnel Boring Machine ◽  
Performance Parameters ◽  
Rock Mass Properties ◽  
Tunnel Boring ◽  
Machine Performance ◽  
Excavation Process ◽  
Mass Properties ◽  
Headrace Tunnel

scholarly journals Analysis of Squeezing Phenomenon in the Headrace Tunnel of Chameliya Project, Nepal

2014 ◽  
Vol 13 ◽  
pp. 44-51 ◽  
Author(s):  
Pawan Kumar Shrestha ◽  
Krishna Kanta Panthi ◽  
Chhatra Bahadur Basnet
Keyword(s):  
Mechanical Properties ◽  
Rock Mass ◽  
Cross Section ◽  
Support Pressure ◽  
Rock Mass Properties ◽  
Tunnel Wall ◽  
Hydroelectric Project ◽  
Mass Properties ◽  
Headrace Tunnel ◽  
Tunnel Cross Section

The headrace tunnel of Chameliya Hydroelectric Project, Nepal has faced severe squeezing problems from chainage 3+100m to 3+900m. Due to the severe squeezing and deformation, the tunnel cross section has narrowed considerably along this 800m long tunnel stretch. The tunnel wall closure (deformation) is mostly well over 1 m and the maximum recorded closure exceeds 2m. This paper assesses the squeezing phenomenon along this tunnel stretch through evaluation of rock mass properties and support pressure. Three different methods (two analytical and one 2D finite element numerical modeling program) are used in this analysis. The finding is that it is possible to predict extent of squeezing in tunnel if more than one method is used to verify rock mass mechanical properties. DOI: http://dx.doi.org/10.3126/hn.v13i0.10039HYDRO NEPAL Journal of Water, Energy and EnvironmentIssue No. 13, July 2013Page: 44-51Uploaded date: 3/13/2014

Modelling of thermal rock mass properties at the potential sites of a Swedish nuclear waste repository

2009 ◽  
Vol 46 (6) ◽  
pp. 1042-1054 ◽  
Author(s):  
Jan Sundberg ◽  
Pär-Erik Back ◽  
Rolf Christiansson ◽  
Harald Hökmark ◽  
Märta Ländell ◽  
...  
Keyword(s):  
Rock Mass ◽  
Nuclear Waste ◽  
Nuclear Waste Repository ◽  
Rock Mass Properties ◽  
Mass Properties ◽  
Waste Repository
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