A Semi-Empirical Model of the In-Situ Stress Distribution for a Strike-slip Regime: the Long Beach Unit, California

1995 ◽  
Author(s):  
K.W. Katahara ◽  
K.W. Lynch ◽  
R.G. Keck
Keyword(s):  
Stress Distribution ◽  
Empirical Model ◽  
In Situ Stress ◽  
Strike Slip ◽  
Long Beach ◽  
Slip Regime ◽  
Semi Empirical

Present in-situ stress distribution characteristics of strike-slip in SH Oilfield, Tarim Basin

2021 ◽  
Vol 14 (13) ◽  
Author(s):  
Teng Zhao ◽  
Wenge Hu ◽  
Rui Zhao ◽  
Min Yang ◽  
Qiang Wang ◽  
...  
Keyword(s):  
Stress Distribution ◽  
Tarim Basin ◽  
In Situ Stress ◽  
Strike Slip ◽  
Distribution Characteristics

scholarly journals Effect of Advancing Direction of Working Face on Mining Stress Distribution in Deep Coal Mine

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Yuesong Tang ◽  
Wenchao Sun ◽  
Xin Zhang ◽  
Pengju Liu
Keyword(s):  
Stress Distribution ◽  
Large Scale ◽  
In Situ Stress ◽  
Deep Mining ◽  
Deep Coal Mine ◽  
Working Face ◽  
Geological Conditions ◽  
Original Rock ◽  
High Level

Deep mining has become the normal state of coal mining; compared with the mine with shallow buried depth, the consequent high level of in situ stress and complex distribution have brought severe threats to the stability of the stope and the surrounding rock of the roadway. In this research, taking the 121304 working face of Kouzidong Mine as the engineering background, the characteristics of mining-induced stress distribution under complex in situ stress environment in deep mining are analyzed by using on-site measurement of the original rock stress and mining stress, establishing a theoretical model centered on the middle section of the working face, and establishing large-scale numerical calculation models for different advancing directions. It was found that under deep mining conditions, the maximum stress of the original rock is 25.12 MPa, and the direction is vertical. The advanced influence range of mining stress is about 150 m, and the abutment pressure presents a three-peak distribution characteristic in front of the working face. The research results provide important theoretical guiding value for guiding the mining of coal mines with similar geological conditions.

scholarly journals New Method to Design Coal Pillar for Lateral Roof Roadway Based on Mining-Induced Stress: A Case Study

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Feng Wang ◽  
Shaojie Chen ◽  
Jialin Xu ◽  
Mengzi Ren
Keyword(s):  
Stress Distribution ◽  
Coal Pillar ◽  
In Situ Stress ◽  
New Method ◽  
Maximum Deformation ◽  
Induced Stress ◽  
Stress Contour ◽  
Longwall Panel ◽  
Overlying Strata

The traditional method to design coal pillar for lateral roof roadway was established based on the mining-induced strata movement contour which is considered as a straight line, while ignoring the variations of the internal strata deformation law as well as stress distribution characteristics. In order to make up for this deficiency, in this study, evolution of mining-induced stress in the overlying strata was simulated using physical and numerical simulations, and a method to design coal pillar for lateral roof roadway based on mining-induced stress was proposed. The results indicate that the stress of the overlying strata is redistributed during excavation, and the stress distribution can be divided into a stress-relaxation area, a stress-concentration area, and an in situ stress area. The contour line of 1.05 times the in situ stress is used to define the mining-induced stress contour. Stress inside the contour is redistributed while outside the contour the overlying strata are still within the in situ stress area. Mining-induced stress contour presents a concave-upward type from coal seam to the overlying strata that cannot be merged into a straight one due to their different characteristics of movement and deformation. With this in mind, this study proposed a method to design the width of coal pillar for lateral roof roadway according to the mining-induced stress contour. According to mining-induced stress contour, the width of coal pillar for lateral roof roadway of longwall panel 31100 is 160 m, and the maximum deformation of the roadway is 270 mm. The new method can definitely meet engineering demands.

Soil functions and in situ stress distribution in subtropical soils as affected by land use, vehicle type, tire inflation pressure and plant residue removal

2018 ◽  
Vol 184 ◽  
pp. 78-92 ◽  
Author(s):  
Dörthe Holthusen ◽  
André Anibal Brandt ◽  
José Miguel Reichert ◽  
Rainer Horn ◽  
Heiner Fleige ◽  
...  
Keyword(s):  
Land Use ◽  
Stress Distribution ◽  
In Situ Stress ◽  
Plant Residue ◽  
Soil Functions ◽  
Inflation Pressure ◽  
Residue Removal ◽  
Vehicle Type ◽  
Subtropical Soils
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