Analytical solution for rock mass bearing plate rheological tests based on a novel viscoelastic combination model

2020 ◽  
pp. 1-15
Author(s):  
Shuling Huang ◽  
Xiuli Ding ◽  
Jun He ◽  
Shihu Xiong
Keyword(s):  
Rock Mass ◽  
Analytical Solution ◽  
Combination Model ◽  
Bearing Plate

Analytical solution of energy redistribution in rectangular openings upon in-situ rock mass alteration

2018 ◽  
Vol 106 ◽  
pp. 74-83 ◽  
Author(s):  
Xiangjian Dong ◽  
Ali Karrech ◽  
Hakan Basarir ◽  
Mohamed Elchalakani ◽  
Chongchong Qi
Keyword(s):  
Rock Mass ◽  
Analytical Solution ◽  
Energy Redistribution

scholarly journals Analytical solution of circular tunnel in elastic-viscoplastic rock mass

2019 ◽  
Vol 16 (6) ◽  
Author(s):  
Xiao-Fei Wang ◽  
Bin-Song Jiang ◽  
Qiang Zhang ◽  
Meng-Meng Lu ◽  
Miao Chen
Keyword(s):  
Rock Mass ◽  
Analytical Solution ◽  
Circular Tunnel

Study on Center Hole Deformation Test of Rigid Bearing Plate

2008 ◽  
Vol 33-37 ◽  
pp. 1187-1194
Author(s):  
Jian Guo Zhang ◽  
Qiang Yong Zhang ◽  
Wen Dong Yang ◽  
Ying Zhang
Keyword(s):  
Rock Mass ◽  
Deformation Modulus ◽  
Hydropower Station ◽  
Weak Rock ◽  
Bearing Plate ◽  
Deep Rock ◽  
Weak Rock Mass ◽  
Deformation Test ◽  
Test Points ◽  
Dagangshan Hydropower Station

The center hole deformation test of rigid bearing plate is an important method for understanding deformation properties of deep weak rock mass. According to the center hole deformation test of rigid bearing plate in dam zone of Dagangshan hydropower station, this paper detailedly recommends test method of this experiment, and the settlement deformation formula of deep rock mass under circular rigid bearing plate is deduced, which could be used to calculate deformation modulus and equivalence deformation modulus of different deep rock mass at test points. According to curves of depth-deformation under different pressures at test points in dam zone, we have analyzed deformation characteristics of deep weak rock mass. By the center hole deformation test of rigid bearing plate, stratum properties in dam zone of Dagangshan hydropower station could be understood further, and it provides important references for the study of creep speciality of weak rock mass in dam zone.

Back Analysis on Mechanical Deformation Parameters of Columnar Jointed Rock Mass

2011 ◽  
Vol 55-57 ◽  
pp. 1947-1950
Author(s):  
Sheng Jie Di ◽  
Wen Tang Zheng ◽  
Jing Kui Zhang
Keyword(s):  
Rock Mass ◽  
Back Analysis ◽  
Jointed Rock ◽  
Jointed Rock Mass ◽  
Analytical Models ◽  
Hydro Power ◽  
Bearing Plate ◽  
Deformation Parameters ◽  
Columnar Jointed Rock Mass ◽  
Joint Deformation

The rock mass with polycrystalline aggregates is common geomaterial in civil and architectural engineering as well as hydraulic and hydro-power engineering. For this kind of geometerials, the study on the joint deformation parameters Kn and Ks and the calculation method are not enough so far. Focusing on the rock mechanics and engineering problems of columnar jointed rock mass related to Baihetan hydropower project, analytical models and numerical method based on 3DEC are employed to study the mechanical parameters. The joint deformation parameters Kn and Ks are back analysis using GRNN and the field data of load-bearing plate tests. The application shows that the calculation results are in good accordance with in-situ test results.

scholarly journals Analytical and Reliability Study of the Tunnel with Rockbolts in Rock Masses

2018 ◽  
Author(s):  
Qiang Meng ◽  
Hongbo Zhao ◽  
Changxing Zhu ◽  
Zhongliang Ru
Keyword(s):  
Rock Mass ◽  
Analytical Solution ◽  
Hydrostatic Stress ◽  
Yield Criterion ◽  
Plastic Zone Size ◽  
Homogenization Method ◽  
Flow Rule ◽  
Circular Tunnel ◽  
The Stability ◽  
Associated Flow Rule

Rockbolts are a critical reinforcement ways which widely used in tunnel engineering. In this paper, an analytical solution of circular tunnel with rockbolts was proposed based on homogenization method, and then the stability of a circular tunnel was investigated by considering the uncertainty based on the proposed analytical solution. Elastoplastic analytical solution for unsupported circular tunnel was presented briefly in hydrostatic stress field with a linear Mohr-Coulomb yield criterion and a non-associated flow rule. An analytical solution of circular tunnel with rockbolts was proposed through considering rock mass and rockbolts as a new homogeneous, isotropic, parameters strengthened equivalent composite material. A numerical example is used to verify the proposed analytical solution. The results show that the proposed solution can effectively characterize the mechanical behavior of rock mass and rockbolts in tunnel. Then, the proposed solution is adopted to calculate reliability index and failure probability of tunnel. The results show that the proposed method can also be effectively used to perform the stability and reliability analysis of tunnel and rockbolts have an important effect on plastic zone size and displacement of tunnel.

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