Study of the failure process in large-sized coal-rock mass under static and dynamic loading by three-dimensional numerical simulation

2016 ◽  
pp. 349-354
Author(s):  
X Li ◽  
C Li
Keyword(s):  
Numerical Simulation ◽  
Rock Mass ◽  
Dynamic Loading ◽  
Failure Process ◽  
Three Dimensional ◽  
Coal Rock ◽  
Static And Dynamic Loading

scholarly journals TOMOGRAPHY BASED ON THE REPRESENTATION OF THE MODEL BY CHIBYSHEV POLYNOMIALS: EXAMPLES OF USE

2019 ◽  
Vol 2 (3) ◽  
pp. 154-159
Author(s):  
Maxim Protasov ◽  
Dmitry Neklyudov ◽  
Leonid Nazarov
Keyword(s):  
Rock Mass ◽  
Ray Tracing ◽  
Efficient Algorithm ◽  
A Priori ◽  
Three Dimensional ◽  
Stress Fields ◽  
A Priori Information ◽  
Travel Time Tomography ◽  
Coal Rock ◽  
Priori Information

The paper deals with the three-dimensional travel-time tomography of the first arrivals. The model is represented by Chebyshev polynomials. This allows one to use a priori information about the model effectively and reduce the number of recoverable parameters to the required minimum. Also, such a model representation makes it possible to obtain a very efficient algorithm for solving the two-point ray-tracing problem for three-dimensional media, which is necessary for tomography. Examples of solving the three-dimensional cross-well tomography, as well as examples using tomography for the reconstruction of stress fields in the coal-rock mass are presented.

Numerical Simulation on Tensile Fracture Process of Multi-Crack Rock Bridge

2012 ◽  
Vol 461 ◽  
pp. 745-748
Author(s):  
Lai Gui Wang ◽  
Xin Rui Gu ◽  
Feng Wei
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Rock Mass ◽  
Fracture Process ◽  
Continuous Medium ◽  
Failure Process ◽  
Tensile Failure ◽  
Tensile Fracture ◽  
Rock Bridge ◽  
Finite Element Software

In order to study the tensile failure of rock bridge, the finite element software which can simulate the cracking of pull and tensile stress was used to simulate the tensile failure process of rock bridge with multi-crack. The general finite element software can only simulation continuous medium, in this paper we succeeded in discontinuous problem with this finite element software. Reach a conclusion of the rupture results of rock bridge in rock mass with multi-crack under the conditions of uniaxial compression, and the law of the stress distribution in the process of destruction.

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