|
|
|
|
investigating effect of tunnel size, rock mass conditions, and in-situ stresses on stability of tunnels
|
|
|
|
|
|
|
|
نویسنده
|
rehman hafeezur ,shah ahmad ,hashim mohd hazizan bin mohd ,muhammad khan naseer ,ali wahid ,sultan shah kausar ,junaid muhammad ,ullah rafi ,adeel muhammad bilal
|
|
منبع
|
journal of mining and environment - 2022 - دوره : 13 - شماره : 4 - صفحه:973 -987
|
|
چکیده
|
The major factors affecting tunnel stability include the ground conditions, in-situ stresses, and project-related features. in this research work, critical strain, stress reduction factor (srf), and capacity diagrams are used for tunnel stability analysis. for this purpose, eighteen tunnel sections are modelled using the flac2d software. the rock mass properties for the modelling are obtained using the roclab software. the results obtained show that tunnel deformations in most cases are within the safety limit. meanwhile, it is observed that the rock mass quality, tunnel size, and in-situ stresses contribute to the deformation. the resulting deformations also affect srf. srf depends on the in-situ stresses, rock mass quality, and excavation sequence. the capacity diagrams show that the liner experience stress-induced failures due to stress concentration at the tunnel corners. this study concludes that tunnel stability analysis must include an integrated approach that considers the rock quality, in-situ stress, excavation dimensions, and deformations.
|
|
کلیدواژه
|
critical strain ,stress reduction factor ,capacity diagram ,tunnel shape and size ,in-situ stresses
|
|
آدرس
|
balochistan university of information technology, faculty of engineering, department of mining engineering, pakistan. university sains malaysia, school of materials and mineral resources engineering, malaysia, balochistan university of information technology, faculty of engineering, department of mining engineering, pakistan, university sains malaysia, engineering campus, school of materials and mineral resources engineering, malaysia, balochistan university of information technology, faculty of engineering, department of mining engineering, pakistan, balochistan university of information technology, faculty of engineering, department of mining engineering, pakistan, karakoram international university, department of mining engineering, malaysia, karakoram international university, department of mining engineering, malaysia, universiti teknologi malaysia, faculty of civil engineering, department of geotechnics and transportation, pakistan. balochistan university of information technology, engineering and management sciences (buitems), faculty of engineering, department of geological engineering, pakistan, national university of science and technology, risalpur campus, department of transportation and geotechnical engineering, pakistan
|
|
پست الکترونیکی
|
biadeel@mce.nust.edu.pk
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Authors
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|