The stress state of rocks at the actual boundary of a mine working

1973 ◽  
Vol 10 (4) ◽  
pp. 284-289
Author(s):  
V. I. Sheinin
Keyword(s):  
Stress State ◽  
Mine Working

Stress state of saturated porous mass near a horizontal mine working

1979 ◽  
Vol 15 (3) ◽  
pp. 185-191
Author(s):  
L. P. Khoroshun ◽  
R. M. Israfilov
Keyword(s):  
Stress State ◽  
Mine Working ◽  
Porous Mass ◽  
Horizontal Mine Working

A Study of the Stress State of Underground Gas Pipelines in Mine Working Zones Using the Method of Internal Response Function

2019 ◽  
Vol 51 (2) ◽  
pp. 252-262
Author(s):  
I. V. Orynyak ◽  
Z. S. Yaskovets
Keyword(s):  
Stress State ◽  
Response Function ◽  
Mine Working ◽  
Gas Pipelines ◽  
Internal Response

Analysis of the volumetric stress state around a mine working of finite length

1983 ◽  
Vol 19 (4) ◽  
pp. 317-320
Author(s):  
N. A. Zhdankin ◽  
S. B. Kolokolov
Keyword(s):  
Stress State ◽  
Finite Length ◽  
Mine Working ◽  
Volumetric Stress

scholarly journals Application of roof bolting to reduce water inflow into mine workings during the crossing of tectonic faults

2021 ◽  
Vol 280 ◽  
pp. 01006
Author(s):  
Oleksandr Krukovskyi ◽  
Viktoriia Krukovska ◽  
Yurii Vynohradov ◽  
Vladimir Dyomin
Keyword(s):  
Stress State ◽  
Mine Working ◽  
Numerical Study ◽  
Water Pressure ◽  
Stable State ◽  
Calculated Data ◽  
Water Inflow ◽  
Roof Bolting ◽  
Tectonic Disturbance ◽  
Hydrogeological Conditions

In this work, the problem of water inflow reduction in Ukrainian coal mines, which are distinguished by difficult hydrogeological conditions, was considered. A numerical study of the change in water inflow into a mine working when it crosses a tectonic fault was carried out. The cases when the permanent working was supported by frame supports and roof bolts were considered. The calculation of stress fields, zones with inelastic deformations and coefficients of permeability, which depend on the stress state and takes into account tectonic and natural permeability of the rocks, was performed. The results of calculating the water pressure and water inflow into the mine working in all considered cases are presented in the article. Analysis of the calculated data showed that a disturbed area, which covered water-bearing ricks, was formed in the roof of the mine working with the frame support. Within this area, water can move towards the contour of the mine working. The filtration permeability of the host rocks increases significantly when the mine face approaches the tectonic disturbance. The flow rate of water reaches critical values. The use of roof bolting restrains the unloading of the boundary rocks from the rock pressure and keeps them in a triaxially compressed stress state. The permeability value decreases by the value of its technological component. In different areas of the intersection of tectonic disturbance, the water inflow into the mine working with roof bolting is 3-8 times less than in the working, supported by frame supports. Therefore, the use of roof bolting allows not only to keep the mine working in a stable state, but also to significantly reduce water inflows at complicated hydrogeological conditions.

Research and Analysis of the Stress State of the Load-Bearing Elements in the Preparatory Mine Working “Massive – Frame – Combined Roof-Bolting System”

2020 ◽  
pp. 54-66
Author(s):  
V. Bondarenko ◽  
I. Kovalevska ◽  
H. Symanovych ◽  
M. Barabash ◽  
V. Chervatiuk ◽  
...  
Keyword(s):  
Stress State ◽  
Mine Working ◽  
Load Bearing ◽  
Roof Bolting

Short Stress State Questionnaire

2015 ◽  
Vol 31 (1) ◽  
pp. 20-30 ◽  
Author(s):  
William S. Helton ◽  
Katharina Näswall
Keyword(s):  
Stress State ◽  
Factor Structure ◽  
Human Performance ◽  
Self Report ◽  
Confirmatory Factor ◽  
Stress States ◽  
Related Stress ◽  
Using Data ◽  
Task Conditions ◽  
Multiple Samples

Conscious appraisals of stress, or stress states, are an important aspect of human performance. This article presents evidence supporting the validity and measurement characteristics of a short multidimensional self-report measure of stress state, the Short Stress State Questionnaire (SSSQ; Helton, 2004 ). The SSSQ measures task engagement, distress, and worry. A confirmatory factor analysis of the SSSQ using data pooled from multiple samples suggests the SSSQ does have a three factor structure and post-task changes are not due to changes in factor structure, but to mean level changes (state changes). In addition, the SSSQ demonstrates sensitivity to task stressors in line with hypotheses. Different task conditions elicited unique patterns of stress state on the three factors of the SSSQ in line with prior predictions. The 24-item SSSQ is a valid measure of stress state which may be useful to researchers interested in conscious appraisals of task-related stress.

The Construction of and Relationship between Relaxation and Stress State Scales among Hikers

2000 ◽  
Author(s):  
Danny Allen ◽  
Timothy D. Ritchie
Keyword(s):  
Stress State

Assessing daily stress with the Short Stress State Questionnaire (SSSQ): Relationships with cognitive slips-failures

2005 ◽  
Author(s):  
William S. Helton ◽  
Diana Fields ◽  
Joseph A. Thoreson
Keyword(s):  
Stress State ◽  
Daily Stress
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