scholarly journals Slope Monitoring Systems Design for Mining Enterprises

2020 ◽  
Vol 174 ◽  
pp. 01025
Author(s):  
Vasilii Cheskidov ◽  
Hendrik Grobler ◽  
Dmitrii Kurenkov ◽  
Alexandra Lipina
Keyword(s):  
Systems Design ◽  
Industrial Safety ◽  
Open Pit ◽  
Monitoring Systems ◽  
Main Task ◽  
Significant Complication ◽  
Geological Conditions ◽  
Slope Structure ◽  
The Status ◽  
Fast Development

The fast development of technologies for the collection, processing and interpretation of information, as well as significant complication of mining natural-technical systems, leads to the emergence of a need to revise the principles of monitoring mining facilities. The operation of modern sloping structures in mining enterprises is associated with high industrial and environmental risks, since the possibility of emergencies remains, and the scope of the accident consequences can be continental. The current conditions of mining require the development of new principles to assess and forecast the status of dumps, open pit slopes, tailings dams, and hydraulic dumps. The developed typification of mining and geological phenomena and factors that affect the stability of sloping structures allows the design of monitoring systems of their state with consideration to each object’s specifics. Besides, this approach is formalized and allows its implementation in conditions of digital technologies progress. The development of detailed models of slope structures, which should become their digital twins, at last, enables to evaluate the current state of the observed object at all stages of its life cycle, based on received surveying, engineering-geological and hydrogeological information, and predict the slope structure behavior in the short term and medium term. The main task to be solved is the creation of principles for the organization of monitoring at mining enterprises that will enhance environmental and industrial safety in conditions of significant complication of mining and geological conditions of operated mineral deposits.

scholarly journals Ensuring Seismic Safety of Underground Mines During Blasting Operations in Combined Surface-Underground Deposit Development

2020 ◽  
Vol 174 ◽  
pp. 01016
Author(s):  
Aleksey Novinkov ◽  
Sergey Protasov ◽  
Pavel Samusev
Keyword(s):  
Experimental Data ◽  
Coal Mines ◽  
The State ◽  
Industrial Safety ◽  
Underground Mines ◽  
Open Pit ◽  
Vibration Velocity ◽  
Seismic Safety ◽  
Experimental Data Processing ◽  
Geological Conditions

At present, there are no standard methods for assessing seismic safety of underground mines during blasting on the earth’s surface. The need for such assessments arises when underground mines are located near open-pit coal mines, when the mine fields development is continued into the open pit, and when open surface coal mines use highwall miners. The issues of assessing seismic safety can be complicated by the lack of experimental data on vibration parameters, for example, if the answer is already required at the stage of new mines designing. The paper also provides an analysis of experimental data, including the results of monitoring the state of underground mines during seismic impacts of varying degrees of intensity. It is shown that the spread of the observed PPV, at which local damage or deformation of the underground mines has taken place, attains high values. In the absence of such data for underground mines in specific mining and geological conditions, it is recommended that the maximum allowable PPV vпр be assigned taking into account the class of underground mines and the type of support. At the same time, it is noted that the recommended vпр values given in the literature relate to the openings that were driven in the solid without geological disturbances and anomalies; not deviating from regulatory requirements regarding the state of workings; in the absence of danger of groundwater breakthrough; in the absence of danger of gas-dynamic phenomena, and other negative factors. If this is not the case, according to the requirements of the Federal norms and rules of industrial safety, the seismic safety distance should be increased by 2 times. This requirement is equivalent to multiplying the maximum permissible vibration velocity by a decreasing coefficient k=2b, where the power of two is the regression parameter b obtained from the experimental data processing.

scholarly journals Study of hydrogeological conditions to ensure security of mining at Sokolovsky iron-ore deposit

2020 ◽  
pp. 133-141
Author(s):  
Timur Sh. Dalatkazin ◽  
◽  
Alfiia N. Kaiumova ◽  
Keyword(s):  
Rock Mass ◽  
Industrial Safety ◽  
Open Pit ◽  
Prevention Measures ◽  
Security Measures ◽  
Field Development ◽  
Hydrogeological Conditions ◽  
Geological Conditions ◽  
Main Production ◽  
Iron Ore Deposit

Introduction. Complex hydrogeological conditions of the rock mass at Sokolovsky deposit are the cause of constant search for new solutions for industrial safety improvement. At the present time there is much information on engineering and geological conditions of the field rock mass which is a source of measures developed to ensure industrial safety and technological solutions in mining. Research aim. With the purpose of determining a tactics of mining security support, the information on the hydrogeological and engineering-geological conditions of Sokolovsky field was analyzed. Methodology. The article provides the details of Sokolovsky field structure. The factors have been revealed which are hazardous for mining: undrained hydrogeological horizons and complexes, karst, thixotropic rock within the open pit. These factors create the conditions for sludge and water accumulation and rush into the underground mine. The majority of sandshale rushes fall upon the main production horizons into the intake and transportation mine workings. Results. Directions have been determined for further investigation of the mechanism of hazardous phenomena development and realization in geological environment of the field; the investigation is directed at improving catastrophe prevention measures and personnel security measures. Summary. Currently, at the stage of field development, there emerged a need to study particular hydrogeological and geomechanical conditions in details in order to increase of effectiveness of drainage at local sites of the mass which are designed for ore extraction.

Ukrainian community life of believers

2008 ◽  
pp. 110-134
Author(s):  
Pavlo Yuriyovych Pavlenko
Keyword(s):  
Religious Life ◽  
Main Task ◽  
Community Life ◽  
Religious Activity ◽  
Existence Of God ◽  
Religious System ◽  
Real Presence ◽  
The Status ◽  
Intimate Relations ◽  
The Individual

The cornerstone of any religion is its anthropological concept, which seeks to determine the essential orientations of man, to outline the ideological framework of its existence, to represent the idea of ​​its essence, purpose in earthly life. The main task of the religious system is the act of involving and subordinating man to the spiritual divine realm as the realm of the transcendental existence of God. Belief in the real presence of the latter implies a new understanding of oneself, which ultimately leads the religious individual to the desire to be involved in this transcendental existence, to have intimate relations with him, to have a consciousness inherent in God. Note that in this context, all human being is interpreted as a certain arena for this realization. Therefore, the religious life of the individual acquires the status of religious activity.

Analysis of Efficiency of Drilling of Large-Diameter Wells With a Profiled Wing Bit / Badania Efektywności Wiercenia Studni Wielkośrednicowych Świdrem Skrawającym z Profilowanymi Skrzydłami

2012 ◽  
Vol 57 (2) ◽  
pp. 363-373
Author(s):  
Jan Macuda
Keyword(s):  
Average Rate ◽  
Large Diameter ◽  
Open Pit ◽  
Mechanical Parameters ◽  
Drilling Rate ◽  
Geological Conditions ◽  
Rock Drillability ◽  
Drilling Technology ◽  
Weight On Bit ◽  
Rotary Speed

Abstract In Poland all lignite mines are dewatered with the use of large-diameter wells. Drilling of such wells is inefficient owing to the presence of loose Quaternary and Tertiary material and considerable dewatering of rock mass within the open pit area. Difficult geological conditions significantly elongate the time in which large-diameter dewatering wells are drilled, and various drilling complications and break-downs related to the caving may occur. Obtaining higher drilling rates in large-diameter wells can be achieved only when new cutter bits designs are worked out and rock drillability tests performed for optimum mechanical parameters of drilling technology. Those tests were performed for a bit ø 1.16 m in separated macroscopically homogeneous layers of similar drillability. Depending on the designed thickness of the drilled layer, there were determined measurement sections from 0.2 to 1.0 m long, and each of the sections was drilled at constant rotary speed and weight on bit values. Prior to drillability tests, accounting for the technical characteristic of the rig and strength of the string and the cutter bit, there were established limitations for mechanical parameters of drilling technology: P ∈ (Pmin; Pmax) n ∈ (nmin; nmax) where: Pmin; Pmax - lowest and highest values of weight on bit, nmin; nmax - lowest and highest values of rotary speed of bit, For finding the dependence of the rate of penetration on weight on bit and rotary speed of bit various regression models have been analyzed. The most satisfactory results were obtained for the exponential model illustrating the influence of weight on bit and rotary speed of bit on drilling rate. The regression coefficients and statistical parameters prove the good fit of the model to measurement data, presented in tables 4-6. The average drilling rate for a cutter bit with profiled wings has been described with the form: Vśr= Z ·Pa· nb where: Vśr- average drilling rate, Z - drillability coefficient, P - weight on bit, n - rotary speed of bit, a - coefficient of influence of weight on bit on drilling rate, b - coefficient of influence of rotary speed of bit on drilling rate. Industrial tests were performed for assessing the efficiency of drilling of large-diameter wells with a cutter bit having profiled wings ø 1.16 m according to elaborated model of average rate of drilling. The obtained values of average rate of drilling during industrial tests ranged from 8.33×10-4 to 1.94×10-3 m/s and were higher than the ones obtained so far, i.e. from 181.21 to 262.11%.

Safety audit of rail transport in open pit mines

2020 ◽  
pp. 602-613
Author(s):  
Yu. A. Bakhturin
Keyword(s):  
Industrial Safety ◽  
Open Pit ◽  
Rail Transportation ◽  
Test Procedures ◽  
Open Pit Mines ◽  
Actual Performance ◽  
Braking Performance ◽  
Safety Requirements ◽  
Performance Specifications ◽  
Hazardous Production

In order that the industrial safety audit at hazardous operation objects becomes a source of reliable information, it is required to develop the appropriate regulations and procedures. Inasmuch as Rostekhnadzor has aimed to cancel obligatory expertise of industrial safety, the function of the approval testing, at least to a certain degree, can be given to auditing. This article discusses two auditing scenarios: in case of systematic safety expertise at hazardous production objects and in case of no such expertise undertaken. A procedure is proposed, which allows control over conformance of actual performance specifications of rail transportation stock at an open pit mine to the industrial safety requirements in the frameworks of the safety audit. The procedure includes sampling braking tests, or the comparison of the actual braking performance indices of trains in the most hazardous sections of track with the braking parameters from the dynamic calculations. The method developed at the Institute of Mining, Ural Branch RAS enables taking into account the specific type of braking equipment, is based on the actual physical values and features higher accuracy. The case-studies of the braking test procedures and modeling are given.

SITUATION OF CHILDREN WITH DISABILITIES IN CONTEMPORARY LEGAL, MEDICAL AND SOCIAL PROCESSES IN THE RUSSIAN FEDERATION

2021 ◽  
Vol 100 (4) ◽  
pp. 198-207
Author(s):  
R.N. Terletskaya ◽  
◽  
I.V. Vinyarskaya ◽  
E.V. Antonova ◽  
A.P. Fisenko ◽  
...  
Keyword(s):  
Children With Disabilities ◽  
Social Assistance ◽  
The State ◽  
Main Task ◽  
Persons With Disabilities ◽  
Rehabilitation Programs ◽  
The Family ◽  
The Status ◽  
The Russian Federation ◽  
The Individual

Despite the positive developments in the sphere of ensuring the special needs of disabled children, a comprehensive socio-hygienic assessment of the conditions and lifestyles, as well as of their families, has not been carried out in the recent years. The purpose of the study is to identify, through a sociological survey, the problems that a disabled child encounters in his life, in order to further improve the provision of medical and social assistance to him. Materials and methods of research: 506 legal representatives of minors (aged 0–17 years) with the status of a disabled child were interviewed. Study design: single-center, non-randomized, uncontrolled. Results: the study of the living conditions of a disabled child in the family, the assessment by the parents of the state of his health, the problems arising during the registration of disability, in the provision of medical and rehabilitation assistance, and issues of medical and social support, made it possible to determine the position of this part of the child population in modern legal and medical and social conditions. The main problems were the large number of documents required for the registration of a disability, the long wait for the day of the examination, the remoteness of the location of the medical and social examination bureau, the shortage of specialist doctors, the problem with subsidized drugs, the lack of taking into account the individual needs of the child when carrying out rehabilitation programs, the need to contact different organizations and departments, lack of medical and social assistance, violation of rights in the provision of medical services to a disabled child. Conclusion: The acquired information is important for the further improvement of the provision of medical and social assistance to handicapped children and children with disabilities. The main task today is to develop mechanisms for fulfilling the declared rights and freedoms of persons with disabilities and the obligations undertaken by the state in relation to them. The principle of individualization of the provision of various benefits, depending on the condition of a disabled child, his needs, material security, remains relevant.

ANALYSIS SYSTEM AND EVALUATION OF KRI ELEMENT REDUCTION OF TASKS AS A MEANS OF NATIONAL DEFENSE

JOURNAL ASRO ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 35
Author(s):  
Didit Herdiawan ◽  
Joni Widjayanto ◽  
Benny Sukandari ◽  
Made Suwandiyana
Keyword(s):  
Main Task ◽  
National Defense ◽  
Work System ◽  
The Status ◽  
Analysis System ◽  
Main Components

KRI is one of the main components possessed by the Indonesian Navy which has the main task of security and national defense at sea. The Termination of Operation KRI over the age of 40 results in a lack of existing KRI, so there is a need for research that represents an evaluation and analysis of the work system so that the main tasks can still be carried out. The SWOT and CIPP analysis in this study aims to identify several factors that influence the achievement of the main tasks. The results obtained are in Quadrant I (+; +) which states the status "on the track".Keywords : KRI, SWOT, CIPP.

scholarly journals Substantiation of Safe Conditions During Undermining of Hydraulic Waste Disposal

2018 ◽  
Vol 41 ◽  
pp. 01007
Author(s):  
Yuriy Kutepov ◽  
Aleksandr Mironov ◽  
Maksim Sablin ◽  
Elena Borger
Keyword(s):  
Rock Mass ◽  
Waste Disposal ◽  
Coal Mine ◽  
Water Body ◽  
Water Inflow ◽  
Open Pit ◽  
Coal Seams ◽  
Geological Conditions ◽  
Mine Workings ◽  
Mine Dump

This article considers mining and geological conditions of the site “Blagodatny” of the mine named after A.D. Ruban located underneaththe old open pit coal mine and the hydraulic-mine dump. The potentially dangerous zones in the undermined rock mass have been identified based onthe conditions of formation of water inflow into mine workings. Safe depthof coal seams mining has been calculated depending on the type of water body – the hydraulic-mine dump.

scholarly journals On evaluation of complex-structured coal deposits based on their typical geometric features

2021 ◽  
Vol 303 ◽  
pp. 01029
Author(s):  
Alexander Katsubin ◽  
Victor Martyanov ◽  
Milan Grohol
Keyword(s):  
Surface Mining ◽  
Geological Structure ◽  
Point Of View ◽  
Open Pit ◽  
Open Pit Mining ◽  
Mining Operations ◽  
Coal Deposits ◽  
Geological Conditions ◽  
Wide Range ◽  
Large Length

Information about the geological structure of Kuznetsky coal basin (Kuzbass) allows us to note that coal deposits developed by open-cast method are characterized by complicated conditions and have the following features: large length of deposits at significant depths of occurrence; coal series bedding of different thicknesses (from 1 to 40 m); different dip angles (from 3 to 90º); a significant number of dip and direction disturbances; different thickness of unconsolidated quaternary sediments (from 5 to 40 m); a wide range of strength values of rocks. In addition, there is a thickness irregularity and frequent variability of elements of occurrence of coal seams within the boundaries of a quarry field both in length and depth of mining. From the point of view of open-pit mining, such deposits are complex-structured. The factors listed above have a decisive influence on the choice of technical means, the order of development and the possibility of carrying out surface mining operations. Therefore, there is a need for a systematization of mining and geological conditions for the development of coal deposits, the purpose of which is to ensure a process of evaluation of complex-structured coal deposits for the development of coal-bearing zones by various complexes of equipment.

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