Nonaxisymmetric stress state near a cylindrical working in a gas-saturated rock mass with nonsteady gas filtration

1985 ◽  
Vol 21 (8) ◽  
pp. 732-738
Author(s):  
L. P. Khoroshun ◽  
E. N. Shikula
Keyword(s):  
Rock Mass ◽  
Stress State ◽  
Gas Filtration ◽  
Saturated Rock ◽  
Cylindrical Working

scholarly journals Thermo-hydro-mechanical processes in fractured rock formations during a glacial advance

2015 ◽  
Vol 8 (7) ◽  
pp. 2167-2185 ◽  
Author(s):  
A. P. S. Selvadurai ◽  
A. P. Suvorov ◽  
P. A. Selvadurai
Keyword(s):  
Rock Mass ◽  
Fractured Rock ◽  
Fluid Pressure ◽  
Computational Modelling ◽  
Fracture Zones ◽  
Saturated Rock ◽  
Rock Formations ◽  
Geological Formation ◽  
High Level Nuclear Waste ◽  
High Level

Abstract. The paper examines the coupled thermo-hydro-mechanical (THM) processes that develop in a fractured rock region within a fluid-saturated rock mass due to loads imposed by an advancing glacier. This scenario needs to be examined in order to assess the suitability of potential sites for the location of deep geologic repositories for the storage of high-level nuclear waste. The THM processes are examined using a computational multiphysics approach that takes into account thermo-poroelasticity of the intact geological formation and the presence of a system of sessile but hydraulically interacting fractures (fracture zones). The modelling considers coupled thermo-hydro-mechanical effects in both the intact rock and the fracture zones due to contact normal stresses and fluid pressure at the base of the advancing glacier. Computational modelling provides an assessment of the role of fractures in modifying the pore pressure generation within the entire rock mass.

scholarly journals Time influence of tunnel support on the factor of safety

2020 ◽  
Vol 157 ◽  
pp. 06002
Author(s):  
Ivana Nedevska ◽  
Zlatko Zafirovski ◽  
Slobodan Ognjenovic ◽  
Ivona Nedevska ◽  
Vasko Gacevski
Keyword(s):  
Rock Mass ◽  
Stress State ◽  
Factor Of Safety ◽  
Tunnel Excavation ◽  
Tunnel Support ◽  
Plastic Deformations ◽  
Primary Stress ◽  
Reaction Curve ◽  
State Changes ◽  
The Moment

Before taking any measures to build a tunnel, the rock (soil) is in a primary stress state, which means that the stress state is a function of the thickness of the overburden. At the moment when the measures necessary to excavate a tunnel are taken, the rock state changes from primary to secondary, leading to stress concentration, especially in the tunnel abutments. If the rock is capable of accepting these stresses, a state of equilibrium is reached after certain deformations. Plastic deformations can occur if the stresses are larger than the strength of the rock mass. To avoid excessive deformations or collapse of the rock and the tunnel excavation, it is necessary to place a support. The achieved factor of safety is a function of both the support type and the time when the support is installed. This paper shall present a numerical example of different pressures considered in order to obtain the rock’s reaction curve.

Blasting Methods of Stress State Determination in Rock Mass

2018 ◽  
Vol 54 (4) ◽  
pp. 569-574
Author(s):  
V. N. Tyupin ◽  
T. I. Rubashkina
Keyword(s):  
Rock Mass ◽  
Stress State ◽  
State Determination

scholarly journals Stress state of rock mass during stoping under pit bottom in the presence of slide rocks on the pit bottom

2019 ◽  
Vol 262 ◽  
pp. 012007
Author(s):  
VD Baryshnikov ◽  
LN Gakhova
Keyword(s):  
Rock Mass ◽  
Stress State

Natural Convection in Water-Saturated Rock Mass under Artificial Freezing

2020 ◽  
Vol 56 (2) ◽  
pp. 297-308
Author(s):  
M. A. Semin ◽  
L. Yu. Levin ◽  
M. S. Zhelnin ◽  
O. A. Plekhov
Keyword(s):  
Rock Mass ◽  
Natural Convection ◽  
Saturated Rock ◽  
Artificial Freezing ◽  
Water Saturated
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