Geomechanical justification of rock mass stability during underground limestone mining in quarry walls
The results of numerical simulation of the behavior of the quarry side during limestone excavation in the software package PLAXIS 3D are presented. It is noted that with the help of numerical modeling methods it is possible to perform geomechanical assessment of the stability of the quarry sides...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhytomyr Polytechnic State University
2025-07-01
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| Series: | Технічна інженерія |
| Subjects: | |
| Online Access: | https://ten.ztu.edu.ua/article/view/334246 |
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| Summary: | The results of numerical simulation of the behavior of the quarry side during limestone excavation in the software package PLAXIS 3D are presented.
It is noted that with the help of numerical modeling methods it is possible to perform geomechanical assessment of the stability of the quarry sides taking into account their geometry, physical and mechanical properties of the rock mass and technological parameters of the development system. Analysis of methods for assessing the stress-strain state of the rock mass at the development of mineral deposits and methods for predicting the stability of the sides of the quarry showed that the most appropriate method of numerical modeling is the method of individual (discrete) elements, which, among other things, is implemented in PLAXIS 3D using the Coulomb-Mohr strength criterion.
The possibility of excavation of limestone of Humenetskyi deposit in the sides of the quarry auger mining system, which provides high stability of the passed mine workings and stability of the rock mass has been established.
Numerical modeling of the behavior of the rock mass during and after the excavation of limestone in the side of the quarry complex with auger executive body with a diameter of 2,0 m to a depth of 40 m showed that, at distances between the workings from 2,5 to 0,5 m, the numerical values of vertical surface precipitation are insignificant and vary from 0,0295 to 0,0544 mm, respectively, that is, exceeding the critically acceptable value of surface precipitation of 15 mm has not been recorded.
According to the results of numerical modeling, the graphical dependence of the change in the values of vertical surface precipitation of the rock mass from the distance between the workings in the side of the quarry is constructed and the corresponding analytical dependence is established. |
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| ISSN: | 2706-5847 2707-9619 |