Three-Dimensional Geomechanical Model of Kamchatka

2021 ◽  
Vol 57 (3) ◽  
pp. 309-318
Author(s):  
V. G. Bondur ◽  
M. B. Gokhberg ◽  
I. A. Garagash ◽  
D. A. Alekseev
Keyword(s):  
Three Dimensional ◽  
Geomechanical Model

Three-dimensional geomechanical model of the Tashtagol iron-ore deposit

1998 ◽  
Vol 34 (3) ◽  
pp. 209-216 ◽  
Author(s):  
L. A. Nazarova ◽  
L. A. Nazarov ◽  
A. V. Leont'ev
Keyword(s):  
Iron Ore ◽  
Three Dimensional ◽  
Geomechanical Model ◽  
Ore Deposit ◽  
Iron Ore Deposit

scholarly journals Construction of a 3d geomechanical model and its influence on the dynamic indicators of a carbonate reservoir model

2021 ◽  
Vol 3 (1) ◽  
pp. 43-55
Author(s):  
D. B. Abishev ◽  
V. V. Shishkin ◽  
I. G. Alekhin ◽  
A. Z. Nasibullin
Keyword(s):  
Hydrodynamic Model ◽  
Oil And Gas ◽  
Three Dimensional ◽  
Carbonate Reservoir ◽  
Oil Field ◽  
Gas Content ◽  
Property A ◽  
Geomechanical Model ◽  
History Match ◽  
3D Geomechanical Model

The article presents the process and results of constructing a three-dimensional geomechanical model of an oil field located in the eastern edge of the Caspian basin. Oil and gas content is established in carbonate deposits of the Lower and Middle Carboniferous. The model was based on well log data, one-dimensional geomechanical models and a 3D geological model. The result of geomechanical modeling is the obtained property of additional permeability of the critically loaded discrete fracture network, which was later used in the history match of the hydrodynamic model. In addition to the fracture property, a series of conductive faults were also identified during the history match. When carrying out geomechanical modeling, international experience was taken into account in the calculation of critically loaded fractures and their relationship with the intervals of inflow and loss in carbonate reservoirs. The updated hydrodynamic model, taking into account the geomechanical model, significantly improved the convergence of the model and historical indicators of bottomhole pressures.

Large-scale geomechanical model testing of an underground cavern group in a true three-dimensional (3-D) stress state

2010 ◽  
Vol 47 (9) ◽  
pp. 935-946 ◽  
Author(s):  
W. S. Zhu ◽  
Q. B. Zhang ◽  
H. H. Zhu ◽  
Y. Li ◽  
J.-H. Yin ◽  
...  
Keyword(s):  
Stress State ◽  
Large Scale ◽  
Three Dimensional ◽  
Great Depth ◽  
Model Tests ◽  
Geomechanical Model ◽  
Testing Procedures ◽  
Test Initiation ◽  
The Stability ◽  
Made In

The stability of a large cavern group at great depth is discussed on the basis of large-scale three-dimensional (3-D) geomechanical model tests and numerical simulations. The model tests are described in detail. Improvements in the tests were made in terms of experimental techniques and advanced measurement methods. The model tests utilized active loading on six sides of a rock mass in a true 3-D stress state. During the model construction, precast blocks were fabricated and monitoring holes were defined prior to test initiation. Newly developed combination ball-sliding walls were installed on each of the major loading surfaces to reduce the friction induced by model deformation. A unique grouting and installation technique employing prestressed cables was adopted in the tests. A digital photogrammetric technique, displacement sensing bars using fiber Bragg grating (FBG) technology, and mini multipoint extensometers were developed for measuring deformation. Overloading tests were then conducted for different overburden depths, and 3-D numerical analyses were performed to simulate the testing procedures. Conclusions regarding the stability of the cavern group were developed based on a comparison between the experimental and numerical results.

Substantiation of stable parameters of dumps on the basis of a geomechanical model of designed objects

2020 ◽  
pp. 5-20
Author(s):  
A. A. Agafonov ◽  
T. V. Porshneva
Keyword(s):  
Dimensional Space ◽  
Three Dimensional ◽  
Maximum Load ◽  
Climatic Conditions ◽  
Opencast Mining ◽  
Geomechanical Model ◽  
Stability Parameters ◽  
Physicomechanical Characteristics ◽  
Geological Conditions ◽  
Under Construction

Recently, an increase in the depth of opencast mining of practically all types of minerals leads to an increase in overburden volumes. The lack of space for the placement of excavated rocks leads to the optimization of technological solutions regarding dumping. Determination of the stable parameters of the dumps in specific mining and geological conditions by creating a geomechanical model of the designed dumping sites will solve this problem as much as possible. Taking into account all the difficulties and peculiarities of the variety of mining-geological and mining-technical conditions for the placement of external dumps at the stage of designing mountain objects, involving in the creation of a geomechanical block model the physicomechanical characteristics of overburden stored rocks, base soils, taking into account studies at maximum load, the moisture content of the entire dump facilities, power and angle of inclination of the base of the designed facility, climatic conditions, the intensity of the dumping will give the ability to improve the reliability of the obtained geomechanical calculations of the stability parameters of a complex engineering structure. The SURPAC system allows you to display the results of calculations and design in a visual form in real three-dimensional space. Based on the many available initial data, a set of surface maps is developed for the angle of inclination of the blade base, for elasticity, for the thickness of the weak layer, for humidity, with the allocation of zones of the most and least favorable base conditions for the dump dump, and we obtain a map of the distribution of the safety factor of the building under construction.

scholarly journals Failure Mechanism and Numerical Simulation of Splitting Failure for Deep High Sidewall Cavern Under High Stress

2021 ◽  
Author(s):  
Fan Li ◽  
Qiangyong Zhang ◽  
Wen Xiang ◽  
Guangyuan Yu
Keyword(s):  
Numerical Simulation ◽  
Model Test ◽  
Strain Gradient ◽  
High Stress ◽  
Three Dimensional ◽  
Strain Gradient Theory ◽  
Geomechanical Model ◽  
Geomechanical Model Test ◽  
3D Geomechanical Model ◽  
Splitting Failure

Abstract With the increase of the depth of the underground engineering, the phenomenon of splitting failure of the deep rock will appear, which is very different from the shallow cavern. In order to reveal the formation mechanism of splitting damage, mechanical model tests and numerical simulations of splitting damage were carried out respectively. Using the Pubugou Hydropower Station as the engineering background, a three-dimensional (3D) geomechanical model test was conducted relying on a high stress three-dimensional load test system. The splitting damage phenomenon of high sidewall cavern was observed, and the oscillation variations of displacement and stress were measured. Based on strain gradient theory and continuum damage mechanics, an elastic-plastic damage softening model for splitting damage was established. The relationship between rock damage and energy dissipation was analyzed. Based on the strain energy density theory, the splitting damage criterion based on the strain gradient is established. A numerical analysis method for splitting damage was proposed, and a regional disintegration calculation program was developed based on a commercial finite element code. The numerical simulation results are in basic agreement with the 3D geomechanical model test.

The orbit of Pluto over a long interval of time

1966 ◽  
Vol 25 ◽  
pp. 227-229 ◽  
Author(s):  
D. Brouwer
Keyword(s):  
Periodic Orbit ◽  
Numerical Integration ◽  
Restricted Problem ◽  
Three Dimensional ◽  
The Third ◽  
Circular Restricted Problem ◽  
Resonance Relation

The paper presents a summary of the results obtained by C. J. Cohen and E. C. Hubbard, who established by numerical integration that a resonance relation exists between the orbits of Neptune and Pluto. The problem may be explored further by approximating the motion of Pluto by that of a particle with negligible mass in the three-dimensional (circular) restricted problem. The mass of Pluto and the eccentricity of Neptune's orbit are ignored in this approximation. Significant features of the problem appear to be the presence of two critical arguments and the possibility that the orbit may be related to a periodic orbit of the third kind.

Sign in / Sign up

Export Citation Format

Share Document