Strength of gas-saturated rock mass around preparatory excavation

1982 ◽  
Vol 18 (11) ◽  
pp. 982-986 ◽  
Author(s):  
R. M. Israfilov
Keyword(s):  
Rock Mass ◽  
Saturated Rock

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.

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

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

2014 ◽  
Vol 7 (6) ◽  
pp. 7351-7394 ◽  
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 modeling 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 that can modify the pore pressure generation within the entire rock mass.

Determination of parameters effecting firedamp ignition while methane-saturated rock mass fragmentating

2015 ◽  
pp. 331-335
Author(s):  
V Golinko ◽  
A Yavorskyi ◽  
Ya Lebedev
Keyword(s):  
Rock Mass ◽  
Saturated Rock ◽  
Determination Of Parameters

scholarly journals Study on the Variation Rule and Characteristics of Pore Water Pressure in the Failure Process of Saturated Rock

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Yuezheng Zhang
Keyword(s):  
Rock Mass ◽  
Pore Water ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Failure Process ◽  
Engineering Practice ◽  
Surrounding Area ◽  
Saturated Rock ◽  
In Situ Conditions ◽  
Variation Rule

With the development of tunnels and other engineering constructions into the deep strata, rock masses are more prone to dynamic damage such as rock bursts under in situ conditions and excavation disturbances. The pore water in the rock mass will produce pressure changes during this process. According to the relationship between the change of pore water pressure and the development of rock mass damage, the variation rule and precursor characteristics of pore water pressure in the process of rock mass failure can be found. In this paper, through mechanical analysis, the evolution law of pore water pressure during the failure process of saturated rock is obtained. The study found that, in the process of rock failure, the pore water pressure presents three stages of linear growth, transition, and decrease. The rise and fall of pore water pressure are closely related to rock damage and influence each other. Through the observation of pore water pressure during coal mining, it is found that the coseismic effect of pore water pressure is significant. It is proved that there is a close correlation between the evolution of the stress field in the surrounding area of the stope and the change of pore water pressure in the surrounding area under the effect of mining disturbance. During the engineering practice, dynamic monitoring can be carried out on the change of pore water pressure inside the rock mass according to the law, and the precursor information of rock mass instability and failure can be explored.

scholarly journals Intellectual monitoring of artificial ground freezing in the fluid-saturated rock mass

2017 ◽  
Vol 5 ◽  
pp. 492-499 ◽  
Author(s):  
I. Panteleev ◽  
A. Kostina ◽  
M. Zhelnin ◽  
A. Plekhov ◽  
L. Levin
Keyword(s):  
Rock Mass ◽  
Saturated Rock ◽  
Ground Freezing ◽  
Artificial Ground Freezing

Structural Plane of Rock Mass Strength Characteristics and its Impact on Groundwater

2012 ◽  
Vol 446-449 ◽  
pp. 476-479 ◽  
Author(s):  
Tao Li Xiao ◽  
Xin Ping Li ◽  
Ya Ni Lu
Keyword(s):  
Rock Mass ◽  
Shear Failure ◽  
Underground Water ◽  
Saturated Rock ◽  
Joint Rock Mass ◽  
Strength And Deformation ◽  
Joint Shear ◽  
Strength Formula ◽  
The Impact ◽  
Joint Rock

The strength characteristic of discontinuity is one of the most important mechanical characteristics of rock mass, and its strength dominates the strength and deformation of joint rock mass. The underground water has an important influence on the strength of discontinuity. In this paper, the strength theory of joint rock mass was summarized and analyzed; further, two kinds of failure mode of joint rock mass which are joint shear failure and rock shear failure were proof. Considering the impact of underground water, the effective stress principle was introduced, and base on it, the joint shear failure strength rule of the saturated rock mass was built. When the influence of underground water on joint strength is studied, the shear strength formula has important theoretical and realistic significance.

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

Investigation of the stressed state of a gas-saturated rock mass near an ellipsoidal working

1980 ◽  
Vol 16 (9) ◽  
pp. 760-767
Author(s):  
Yu. N. Podil'chuk ◽  
V. V. Lyakh
Keyword(s):  
Rock Mass ◽  
Stressed State ◽  
Saturated Rock

Stressed state of gas-saturated rock mass around an elliptical excavation

1984 ◽  
Vol 20 (2) ◽  
pp. 153-157
Author(s):  
R. M. Israfilov
Keyword(s):  
Rock Mass ◽  
Stressed State ◽  
Saturated Rock
Sign in / Sign up

Export Citation Format

Share Document