Stress state of a sloping-bedded rock mass around a working

1985 ◽  
Vol 21 (2) ◽  
pp. 132-135 ◽  
Author(s):  
L. A. Nazarova
Keyword(s):  
Rock Mass ◽  
Stress State ◽  
Bedded Rock

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

Stress state of a rock mass near clearing excavations with arbitrary shape in plan view

1982 ◽  
Vol 18 (5) ◽  
pp. 355-360
Author(s):  
I. M. Petukhov ◽  
V. V. Zubkov ◽  
I. A. Zubkova ◽  
A. M. Lin'kov ◽  
V. S. Sidorov
Keyword(s):  
Rock Mass ◽  
Stress State ◽  
Arbitrary Shape ◽  
Plan View

Features of stress state formation in rock mass under hybrid mining

2018 ◽  
pp. 43-49
Author(s):  
A. D. Sashurin ◽  
◽  
A. A. Panzhin ◽  
Yu. P. Konovalova ◽  
N. A. Panzhina ◽  
...  
Keyword(s):  
Rock Mass ◽  
Stress State ◽  
State Formation
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