Research on Rock Resistant Coefficient in Lining Tunnels Based on the Generalized Hoek-Brown Failure Criterion
Author(s) -
Shiyue Zhang,
Ruiyuan Gao,
Qingxiang Meng,
Xiaohu Zhang
Publication year - 2021
Publication title -
geofluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.44
H-Index - 56
eISSN - 1468-8123
pISSN - 1468-8115
DOI - 10.1155/2021/5554644
Subject(s) - mathematics , geotechnical engineering , algorithm , geology
Rock resistant coefficient is a key parameter in rock engineering and can reflect the resistance of surrounding rocks. According to the load-structure method, there are many different formulas in the determination of rock resistant coefficient using elasticity or plasticity theory. Based on the generalized Hoek-Brown failure criterion, this paper develops a closed-form formula for calculating the rock resistant coefficient. The sensibility of different parameters on the rock resistant coefficient is also analyzed. The fact shows that the formula is sensitive to a , σ c , and K d comparing with m b and s especially when they are in a low value, laying a foundation for the determination of rock resistant coefficient in similar lining tunnels.
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