scholarly journals DESIGN OF DRILLING AND EXPLOSION WORKS IN UNDERGROUND MINING USING IN MICROMINE GGIS

2020 ◽  
Vol 1 (1) ◽  
pp. 3-14
Author(s):  
Andrei A. Basargin ◽  
Viktor S. Pisarev
Keyword(s):  
Rock Mass ◽  
Underground Mining ◽  
Rock Properties ◽  
Modern World ◽  
Geological Exploration ◽  
Mining Operations ◽  
Design Decisions ◽  
Well Placement ◽  
Rational Distribution ◽  
Special Software

In the modern world, an increasing number of enterprises involved in geological exploration and exploration use special software and information systems in their work. The use of such systems can significantly accelerate the processing and analysis of information. They make it possible to automate the processing and interpretation of geological exploration data, as well as use them to model deposits and design underground drilling and blasting operations. GGIS Micromine will automate the design of drilling and blasting operations while ensuring well placement taking into account the block geometry and rock properties, and a rational distribution of borehole charges for the most efficient crushing of rock mass. In conditions of high intensity of mining operations at the MGIS quarries, Micromine ensures the efficiency and multivariance of design decisions when performing blasting.

scholarly journals MONITORING OF THE UNDERMINED TERRITORIES OF KARAGANDA COAL BASIN ON THE BASIS OF SATELLITE RADAR INTERFEROMETRY

2016 ◽  
Vol III-6 ◽  
pp. 37-40
Author(s):  
S. B. Ozhigina ◽  
D. V. Mozer ◽  
D. S Ozhigin ◽  
S. G. Ozhigin ◽  
O. G. Bessimbayeva ◽  
...  
Keyword(s):  
Rock Mass ◽  
Underground Mining ◽  
Integrated Approach ◽  
Radar Interferometry ◽  
Coal Basin ◽  
Mining Operations ◽  
Mining Areas ◽  
Close Proximity ◽  
Satellite Radar ◽  
Karaganda Coal

In the Karaganda coal basin, mines are located in close proximity to each other and to the city of Karaganda and ongoing mining operations are accompanied by a dangerous process of settling the earth's surface and monitoring are essential for the region's econ-omy. Underground mining leads to the formation of voids in the rock mass, which cause displacement of the earth surface. This paper demonstrates an innovative use of the integrated approach for monitoring on the example of Karaganda coal basin, which includes estimation of the rock mass displacement using leveling profile lines and satellite radar interferometry. It is proved that satellite radar interferometry provides reliable results of surface subsidence measurements in mining areas and can be used for con-sidered sort of monitoring.

scholarly journals Methodology of modeling nonlinear geomechanical processes in blocky and layered rock masses on models made of equivalent materials

2021 ◽  
Vol 250 ◽  
pp. 542-552
Author(s):  
Boris Zuev
Keyword(s):  
Rock Mass ◽  
Underground Mining ◽  
Similarity Criterion ◽  
Nonlinear Problems ◽  
Rock Masses ◽  
Mining Operations ◽  
Initial Field ◽  
Reliable Determination ◽  
Nonlinear Geomechanical Processes

The research purpose is to develop a methodology that increases the reliability of reproduction and research on models made of equivalent materials of complex nonlinear processes of deformation and destruction of structured rock masses under the influence of underground mining operations to provide a more accurate prediction of the occurrence of dangerous phenomena and assessment of their consequences. New approaches to similarity criterion based on the fundamental laws of thermodynamics; new types of equivalent materials that meet these criteria; systems for the formation of various initial and boundary conditions regulated by specially developed computer programs; new technical means for more reliable determination of stresses in models; new methods for solving inverse geomechanical problems in the absence of the necessary initial field data have been developed. Using the developed methodology, a number of complex nonlinear problems have been solved related to estimates of the oscillatory nature of changes in the bearing pressure during dynamic roof collapse processes; ranges of changes in the frequency of processes during deformation and destruction of rock mass elements, ranges of changes in their accelerations; parameters of shifts with a violation of the continuity of the rock mass under the influence of mining: secant cracks, delaminations, gaping voids, accounting for which is necessary to assess the danger of the formation of continuous water supply canals in the water-protection layer.

scholarly journals Simulation Possibilites of the Post-Mining Goafs Impact on the Deformations Induced by Next Underground Mining Operations with Use of the Cellular Automata Method

2020 ◽  
Author(s):  
Sikora Paweł
Keyword(s):  
Rock Mass ◽  
Underground Mining ◽  
Mining Area ◽  
Mining Operations ◽  
New Approach ◽  
Upper Silesian Coal Basin ◽  
Under Construction ◽  
The Impact ◽  
Further Development

Abstract Underground mining operations in the area of a rock mass affected by previous exploitation may cause additional deformations to appear on the surface. The size of these deformations can be significant, and their character is often non-linear. The nature of these deformations cannot be justified solely by the impact of current mining operations. At the same time, the predictive method of S. Knothe, widely used in Poland, does not explicitly include these types of phenomena. In the area of intensive and long-term mining exploitation, such as the Upper Silesian Coal Basin, the practical possibility of simulating this occurrence may be helpful in the planning of new mining exploitation under construction objects. Today we are usually limited to numerical modelling methods like finite difference method (FDM). This one base on the principle of mechanical similarity. The theoretical usefulness of method (and its similar) has already been proven many times. The main impediment to its practical application is the lack of recognition of the rock mass in terms of its mechanical properties. The presented method is a new approach to the possibility of modelling the subject phenomenon. The method has not been used in practical forecasting mining area deformation caused by underground deposits mining. It’s characterized by a huge potential for further development.

scholarly journals DEVELOPMENT OF DESIGN METHODS FOR DRILLING AND BLASTING OPERATIONS IN OPEN MINE WORKINGS USING GGIS MICROMINE

2019 ◽  
Vol 1 (1) ◽  
pp. 249-258
Author(s):  
Andrei Basargin ◽  
Valery Salnikov ◽  
Viktor Pisarev
Keyword(s):  
Rock Mass ◽  
High Intensity ◽  
Open Pit ◽  
Design Decisions ◽  
Well Placement ◽  
Open Pit Mines ◽  
Condi Tions ◽  
Additional Costs ◽  
Mine Workings

One of the effective ways of collecting information about the properties of the exploding ar-ray is the use of information obtained in the process of drilling wells. This approach is attractive be-cause it does not violate the existing technology of conducting work in a quarry and does not re-quire additional costs for conducting geological studies related to the determination of the physical and strength characteristics of the component rocks of the block. GGIS Micromine will allow automating the design of drilling and blasting operations while ensuring the well placement, taking into account geometry of the block, properties of rocks, and ra-tional distribution of well charges for the most effective crushing of the rock mass. Under the condi-tions of high intensity mining at the open pit mines of the Micromine GGIS, the design decisions are quick and multifaceted when performing drilling and blasting operations.

scholarly journals Geotechnical Risk Classification for Underground Mines / Klasyfikacja Poziomu Zagrożenia Geotechnicznego W Kopalniach Podziemnych

2015 ◽  
Vol 60 (1) ◽  
pp. 51-61
Author(s):  
Ritesh Kumar Mishra ◽  
Mikael Rinne
Keyword(s):  
Risk Assessment ◽  
Rock Mass ◽  
Underground Mining ◽  
Mining Operation ◽  
Mining Activity ◽  
Mine Planning ◽  
Underground Mines ◽  
Mining Operations ◽  
Prediction And Prevention ◽  
Geotechnical Risk

Abstract Underground mining activities are prone to major hazards largely owing to geotechnical reasons. Mining combined with the confined working space and uncertain geotechnical data leads to hazards having the potential of catastrophic consequences. These incidents have the potential of causing multiple fatalities and large financial damages. Use of formal risk assessment in the past has demonstrated an important role in the prediction and prevention of accidents in risk prone industries such as petroleum, nuclear and aviation. This paper proposes a classification system for underground mining operations based on their geotechnical risk levels. The classification is done based on the type of mining method employed and the rock mass in which it is carried out. Mining methods have been classified in groups which offer similar geotechnical risk. The rock mass classification has been proposed based on bulk rock mass properties which are collected as part of the routine mine planning. This classification has been subdivided for various stages of mine planning to suit the extent of available data. Alpha-numeric coding has been proposed to identify a mining operation based on the competency of rock and risk of geotechnical failures. This alpha numeric coding has been further extended to identify mining activity under ‘Geotechnical Hazard Potential (GHP)’. GHP has been proposed to be used as a preliminary tool of risk assessment and risk ranking for a mining activity. The aim of such classification is to be used as a guideline for the justification of a formal geotechnical risk assessment.

scholarly journals Occurrence of Linear Discontinuous Deformations in Upper Silesia (Poland) in Conditions of Intensive Mining Extraction—Case Study

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1897
Author(s):  
Piotr Strzałkowski ◽  
Katarzyna Szafulera
Keyword(s):  
Rock Mass ◽  
Underground Mining ◽  
Building Structures ◽  
Tectonic Structure ◽  
Mining Operations ◽  
Mining Areas ◽  
Tectonic Faults ◽  
Mining Conditions ◽  
The Subject

Currently, linear discontinuous deformations in mining areas are an important issue, both due to the frequency of their occurrence and the threat they pose to general safety. This paper presents a case study of an occurrence of such a deformation. The analyses of the geological and mining conditions, as well as the conducted calculations presented herein, indicate that the cause of the deformation was the occurrence of high-value horizontal tensile strains. It was triggered by mining exploitation carried out with caving in three seams at depths between 200 and 545 m. An additional factor conductive to the creation of the deformation was the tectonic structure of the rock mass. The subject matter of the paper is significant given the growing number of discontinuous linear deformations occurring on the surface due to underground mining—even if the mining was conducted at great depths. They were formed as a result of intensive underground mining operations and the occurrence of high-value deformations. These deformations were particularly dangerous to building structures on the surface, which were often damaged. For this reason, it was worthwhile to make arrangements regarding the correlation between the occurrence of the deformations and the values and the distribution of continuous deformations caused by underground extraction, as well as the existence of tectonic faults.

scholarly journals Linear discontinuous deformations in the light of investigations performed with ERT method

2018 ◽  
Vol 66 ◽  
pp. 01006 ◽  
Author(s):  
Piotr Strzałkowski ◽  
Roman Ścigała ◽  
Katarzyna Szafulera ◽  
Marek Kruczkowski
Keyword(s):  
Electrical Resistivity ◽  
Rock Mass ◽  
Electrical Resistivity Tomography ◽  
Underground Mining ◽  
Mining Area ◽  
Geological Structure ◽  
Mining Operations ◽  
Resistivity Tomography ◽  
Near Surface ◽  
Geophysical Surveys

The article presents an example of using the electrical resistivity tomography method to assess the condition of shallow rock mass layers in the area of linear discontinuous deformations created in the past due to underground mining activity. The research concerned the mining area of one of the Upper Silesian Coal Basin mines, where intensive mining operations have been conducted for several decades. In the considered area, linear discontinuous deformations were created in the form of ground steps. Their location is related to characteristic layout of deposit accessing roadways and extraction fronts in several coal seams. The article analyzes the geological structure of the deposit and the state of deformation of the rock mass caused by mining operations. In order to evaluate the hitherto impacts, appropriate calculations of the extraction influence were performed, assuming different views on the summation of horizontal strain in long time intervals. The calculations were carried out using the theory of W.Budryk - S. Knothe. Theoretical considerations were supplemented with geophysical surveys performed with using electrical resistivity tomography. Obtained results of the near-surface layers ERT imaging in the form of resistivity profiles confirm the existence of rock loosening zones in the areas of discontinuous deformations occurrence.

scholarly journals MONITORING OF THE UNDERMINED TERRITORIES OF KARAGANDA COAL BASIN ON THE BASIS OF SATELLITE RADAR INTERFEROMETRY

2016 ◽  
Vol III-6 ◽  
pp. 37-40
Author(s):  
S. B. Ozhigina ◽  
D. V. Mozer ◽  
D. S Ozhigin ◽  
S. G. Ozhigin ◽  
O. G. Bessimbayeva ◽  
...  
Keyword(s):  
Rock Mass ◽  
Underground Mining ◽  
Integrated Approach ◽  
Radar Interferometry ◽  
Coal Basin ◽  
Mining Operations ◽  
Mining Areas ◽  
Close Proximity ◽  
Satellite Radar ◽  
Karaganda Coal

In the Karaganda coal basin, mines are located in close proximity to each other and to the city of Karaganda and ongoing mining operations are accompanied by a dangerous process of settling the earth's surface and monitoring are essential for the region's econ-omy. Underground mining leads to the formation of voids in the rock mass, which cause displacement of the earth surface. This paper demonstrates an innovative use of the integrated approach for monitoring on the example of Karaganda coal basin, which includes estimation of the rock mass displacement using leveling profile lines and satellite radar interferometry. It is proved that satellite radar interferometry provides reliable results of surface subsidence measurements in mining areas and can be used for con-sidered sort of monitoring.

scholarly journals Improving the accuracy of predicting the hazard of the earth’s surface failure formation during underground mining of mineral deposits

2021 ◽  
Vol 15 (4) ◽  
pp. 15-24
Author(s):  
Botakoz Imansakipova ◽  
Shynar Aitkazinova ◽  
Auzhan Sakabekov ◽  
Gulim Shakiyeva ◽  
Meruyert Imansakipova ◽  
...  
Keyword(s):  
Rock Mass ◽  
Underground Mining ◽  
Triaxial Compression ◽  
Stable State ◽  
Mineral Deposits ◽  
Unstable State ◽  
Mining Operations ◽  
Effect Analysis ◽  
Ranking Criteria ◽  
Relative Change

Purpose. Development of a new approach to improving the accuracy of predicting situations in which the earth’s surface failures occur as a result of undermining a rock mass during the development of mineral deposits. Methods. The critical situations, including the earth’s surface failures, are predicted on the basis of assessing the value of geoenergy and studying its change as large volumes of rock mass are involved in mining. Analytical solutions based on the fundamental laws of physics and mechanics of continuous media are used. The research is performed using methods of cause-and-effect analysis. Findings. Based on the cause-effect relationship, determined between the change in the value of the mass geoenergy and deformation processes on the daylight surface of the field, an effective method has been developed for ranking it according to the degree of hazard of failure formation with the simultaneous use of two criteria. One of the criteria is determined by the relative change in geoenergy during the system transition from the initial (stable) state to the current one, which becomes unstable under certain conditions. The second criterion is formed on the basis of the change in geoenergy during the transition from the current (possibly unstable) state to the final (stable) state. Originality. For the first time, when zoning the daylight surface of a field according to the degree of hazard of failure formation, two ranking criteria are used simultaneously, based on the assessment of geoenergy accumulated in a heterogeneous mass, when it is undermined in the conditions of triaxial compression. Practical implications. The territory ranking method, developed on the basis of the used criteria for hazard of failure formation, allows improving the quality of situational control, predicting risk situations and their development, as well as optimizing the short-term and long-term plans for the development of mining operations.

THE IDENTIFICATION OF PARAMETERS OF THEORIES USED FOR PROGNOSES OF POST MINING DEFORMATIONS BY MEANS OF PRESENT SOFTWARE / IDENTYFIKACJA WARTOŚCI PARAMETRÓW TEORII PROGNOZOWANIA WPŁYWÓW PRZY WYKORZYSTANIU WSPÓŁCZESNYCH NARZĘDZI INFORMATYCZNYCH

2013 ◽  
Vol 58 (4) ◽  
pp. 1347-1357 ◽  
Author(s):  
Roman Ścigała
Keyword(s):  
Rock Mass ◽  
Land Surface ◽  
Underground Mining ◽  
Transient State ◽  
Computer Programs ◽  
Asymptotic State ◽  
Software System ◽  
Practical Utilization ◽  
Identification Of Parameters ◽  
Graphical Processing

Abstract The characteristic of specialized computer programs has been presented, serving for identification of W. Budryk-S. Knothe theory parameters, used for description of asymptotic state of post-mining deformations, as well as for transient state. The software is the result of several years of authors’ work. It is a part of complete software system designed for forecasting of underground mining influences on the rock mass and land surface and graphical processing of calculations results. Apart from software description, a short example of its practical utilization has been attached.

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