How to search?
advanced search

Object

Download

Title: The influence of dimension of mining crib model filled by waste rock on the course of load – displacement characteristic

Abstract:

The analysis of changes in the mechanical properties of wooden mining cribs under the influence of different types of exploitation loads is the question for which deals with many domestic and abroad research centers deal with. High The high interest in this subject results from the increase of the conducted depth exploitation, which contributes to the increase in both the vertical pres-sure and the complexity of geological – mining conditions and in- the intensification of natural hazards. Another reason is the tendency of decreasing the thickness of the exploited ores deposits. Wooden crib support is used Both both in underground ore, hard coal and salt mining is used wooden crib support. Mining cribs with various configurations are especially useful for the reinforcement of excavations workings behind the front and for further strengthen of the crossings. In particular, additional reinforcement support in the form of wooden cribs (pile supporting), which shall be left empty or filled with waste rock is applied in the ore mining in places where found extended rooms or drifts are found or in places with degraded roof conditions, applies additional reinforcement support in the form of wooden cribs (pile supporting), which shall be left empty or filled with waste rock. During underground ex-ploitation is produced waste Waste rock, which comes from the access, prepar-atory excavations and from ongoing field of exploitation is produced during underground exploitation. In the case of the underground exploitation of cop-per ore, waste rock is used to fill voids after exploitation as rock stowing. It is also used for filling mining wooden cribs, as an artificial support and for harder transportation roads. This paper presents the results of the laboratory strength tests performed on models of four-point timber cribs, built with beams set horizontally, at the ge-ometrical scale of 1:10. In the laboratory research Research wooden cribs models with size 200 × 200 × 200 mm and 100 × 100 × 100 mm were used in the laboratory. The paper describes the maximum loading capacity of the cribs consisted consisting only of beams and filled with waste rocks. In addition, a vertical and appropriate strain of cribs at maximum force was shown. On the basis of laboratory research it was found that the use of the same number of timbers and the management of waste rocks, the filling of the four-point cribs with the waste rocks allowed several times to increase its support to be increased several times.

Place of publishing:

More info at Journal site:

https://min-pan.krakow.pl/wydawnictwo/czasopisma/zeszyty-naukowe-instytutu-surowcami-mineralnymi-i-energia-pan/
https://min-pan.krakow.pl/wydawnictwo/wp-content/uploads/sites/4/2018/02/Wskazowki-ZN-ang-2018.pdf

Contact:

Mineral and Energy Economy Research Institute of the Polish Academy of Sciences
J. Wybickiego 7A, 31-261 Kraków,
Phone: (+48) 12 632 33-00, Fax: +48 12 632 35-24,
Email: lidia.gawlik@min-pan.krakow.pl

Editors:

Editorial Board

  • Editor-in-Chief: Krzysztof Galos
  • Deputy Editor-in-Chief: Lidia Gawlik (section: Mineral resources management)
  • Editorial Secretary: Zbigniew Grudziński (section: Fuels and energy)
  • Deputy Editorial Secretary: Zenon Pilecki (section: Mining and geoengineering)
  • Statistical Editor: Jacek Mucha
Publishing Committee
  • Emilia Rydzewska – linguistic editor (Polish)
  • Michelle Atallah – linguistic editor (English)
  • Barbara Sudoł – technical editor

Identifier:

oai:journals.pan.pl:109826

Subject and keywords:

cooper ore model testing wooden cribs

Object collections:

Last modified:

Feb 15, 2021

In our library since:

Dec 14, 2018

Number of object content hits:

$number.toString().replaceAll("[0-9](?=(?:[0-9]{3})+(?![0-9]))", "$0 ")

Number of object content views in PDF format

1060

All available object's versions:

https://journals.pan.pl/publication/125865

Show description in RDF format:

RDF

Show description in OAI-PMH format:

OAI-PMH

Edition name Date
Wpływ wielkości modelu kasztu górniczego wypełnionego skałą płonną na przebieg charakterystyki obciążeniowo-odkształceniowej Feb 15, 2021

Objects

Similar

Groundwaters recharge and drainage in the Żuławy Elbląskie area

Ryszrad Kulma Andrzej Haładus Maria Kreczko Zbigniew Kordalski
Gospodarka Surowcami Mineralnymi - Mineral Resources Management | 2002 | No 4 | 97-115
Keywords hydrogeology groundwaters resources modelling
Download PDF Download RIS Download Bibtex

Abstract

The Żuławy Elbląskie area is located in the eastern part of the Vistula River delta. The area is a partly depressed flat, alluvial plain. The monotonous relief of the delta is contrasted by elevations of the Ilawa Lake District and the Elbląg Upland. From the west the area is bordered by Nogat arm which, along with its Cieplicówka arm and with the Elbląg River constitute the principal part ofhydrographic system ofthe Żuławy. The aquatic system is also strongly influenced by the Drużno Lake. The most part of the Żuławy Elbląskie area must be subjected to the land drainage. Two groundwater horizons arc important for water supply: Pleistocene-Holocene (Quaternary sands) and multiage (oldest Pleistocene units, Tertiary sands and Upper Cretaceous carbonates and siliceous sediments). The Żuławy Elbląskie area is recharged laterally from the surrounding uplands. The infiltration ofmeteoric waters is less important due to impermeable cover and intensive drainage through the system of collector trenches, canals and pump stations. Utilization ofgroundwaters is highly limited by their quality, which deteriorates with the distance from the uplands due to increasing concentration of chloride ion (up to 600 mg Cl/dm3). Another deteriorating factor is the excess of Fe and Mn as well as the increased concentrations of ammonia. The groundwater balance and the assessment of groundwater resources were based upon the modelling studies. Three model variants were considered: Variant O - reconstruction of natural position of groundwater table (unexploited groundwaters), Variant I - reconstruction of hydrodynamic conditions for 1999 (model revision) and Variant 2 - hydrodynamic prognosis at the optimum exploitation of groundwater intakes. Simulations allowed to determine the total amount of groundwaters involved in recharge and drainage of the Żuławy Elbląskie horizons. Total amount ofgroundwaters in the Pleistocene-Holocene horizon is 21,090 m3/24 h under natural conditions (Step O) and 35,040 m3/24 hal maximum exploitation (Step 2). For the multiage horizon the amount of groundwaters under natural conditions (Step O) is 8,440 m3/24 hand increases 5 times at maximum exploitation (up to 43,900 m3/24 h, Stage 2). The disposable resources obtained from modelling are: 24,000 m3/24 h for Pleistocene-Holocene horizon and 38,400 m3/24 h for multiage horizon.
Go to article

Authors and Affiliations

Ryszrad Kulma
Andrzej Haładus
Maria Kreczko
Zbigniew Kordalski

The possibilities and prognosed effects of filling post-exploitation cavities of the "Osiek" sulphur deposit with electric power plant ash waste

Ryszard Kulma Andrzej Haładus Józef Kirejczyk Tomasz Burchard
Gospodarka Surowcami Mineralnymi - Mineral Resources Management | 2000 | No 1 | 43-55
Keywords hydrogeology modelling disposal of industrial waste
Download PDF Download RIS Download Bibtex

Abstract

Smoke ashes from the Tadeusz Kosciuszko electric power plant in Połaniec might have an application in the filling of post-exploitation cavities in the sulphur mine "Osiek". Such a possibility is primarily the result of an investigation of the sub-surface space created by the underground melting ofsulphur, as well as from an analysis ofthe state ofthe ore. Simulations performed on a hydrogeological model of a section of the ore itself, from the standpoint of experimental trials, indicates the feasibility of such an undertaking. The results ofthe study provide a basis for defining the increase in aquifer pressure and also allow the area ofinfluence of the tamponage holes to be determined. The results also indicate that favourable conditions for the backfilling of post-exploitation cavities of the sulphur deposit with ash occur, i fuse is made ofrccirculation holes. The removal ofwater from these holes in amounts necessary to facilitate the continuous preparation ofhydromixturc, decidedly limits the zone of dynamic change within the ore series. The supply of hydromixturc with the required flow intensity requires that there be suitably lower pressures. Experimental trials of the injection ofwater-ash mixtures will allow for an accurate estimation of the quantity of ash waste that can be located within the post-exploitation cavities of the deposit. These results can be used to evaluate the feasibility ofwork ofsuch kind on an industrially viable scale. In the case ofpositive experimental results, it will be necessary to modify the technological methods for the underground melting of sulphur, by considering the planned clement of using industrial ash waste to tamponage the exploited part of the deposit.
Go to article

Authors and Affiliations

Ryszard Kulma
Andrzej Haładus
Józef Kirejczyk
Tomasz Burchard

Evaluation of copper ore flotation process parameters improvement possibilities with use of magnetohydrodynamic activation

Antoni Goszcz Władysław Polechoński Dariusz Foszcz
Gospodarka Surowcami Mineralnymi - Mineral Resources Management | 2004 | No 2 | 39-64
Keywords Copper ore beneficiation magnetohydrodynamic activation
Download PDF Download RIS Download Bibtex

Abstract

The article presents results of research on flotation process conditions improvement as a result of magnetohydrodynamic (MHD) activation of flotation feed, technological water and flotation reagents. In the paper there have been used the results of work done by Agencja Gospodarki Odpadami Agos S.A. (Agency for Waste Management Agos S.A.) for Oddział Wzbogacania Rud (Division Concentrator Plants) KGHM Polska Miedź S.A. in Polkowice entitled Research defining possibilities of using magnetohydrodynamic activation (MHD) for improvement of ore .flotation and concentrate .filtration process parameters. There have been presented results of analysis of statistical significance ofdifferences between obtained results for comparative flotation and with magnetohydrodynamic activation.
Go to article

Authors and Affiliations

Antoni Goszcz
Władysław Polechoński
Dariusz Foszcz

Scenarios of hard coal supplies to the polish economy up to 2020

Mariusz Kudełko Wojciech Suwała Jacek Kamiński
Gospodarka Surowcami Mineralnymi - Mineral Resources Management | 2008 | No 2 | 5-25
Keywords Górnictwo węglowe badania modelowe scenariusze rozwoju bilans węgla kamiennego
Download PDF Download RIS Download Bibtex

Abstract

W artykule podjęto problematykę przyszłej roli węgla kamiennego w bilansie energetycznym Polski. Wymaga to uwzględnienia i szczegółowej analizy wiciu przesłanek, na podstawie których ten bilans powinien być sporządzony. Do najważniejszych z nich należy zaliczyć: rozwój gospodarczy kraju warunkujący wzrost popytu na energię elektryczną i ciepło, możliwości pozyskania węgla kamiennego oraz regulacje emisyjne obowiązujące w sektorze energetycznym. Realizacja celu pracy wymagała zastosowania odpowiednich metod analitycznych, właściwych dla specyfiki zjawisk i rynków o złożonych i często trudnych do uchwycenia zależnościach. Oprócz analizy eksperckiej oraz statystycznej (analiza trendów zużycia węgla), właściwej dla rynków w miarę ustabilizowanych, w pracy wykorzystano podejście modelowe, przydatne w określaniu skutków ekonomicznych i strukturalnych dla zmiennych w czasie procesów zachodzących w otoczeniu gospodarczym. Opierając się na przyjętych założeniach badawczych, dla najbardziej prawdopodobnych scenariuszy sporządzono krajowy bilans węgla kamiennego w perspektywie do 2020 roku oraz sformułowano najistotniejsze wnioski. Zgodnie z nimi znacząca rola węgla kamiennego w bilansie energetycznym kraju, bez względu na rozważany scenariusz rozwojowy, powinna być utrzymana. Prognozowana wielkość zużycia węgla do 2010 roku utrzyma się na poziomic około I 00 mln ton rocznic i warunkach wysokiego popytu na energię elektryczną może być po tym okresie zachowana. Co więcej, w świetle wyników niniejszych badań wzrost możliwości podaży węgla poprzez wykorzystanie istniejących mocy produkcyjnych w kopalniach lub ich rozbudowę wydaje się działaniem ekonomicznie uzasadnionym (scenariusze wys_eko_mid i wys_eko_high). Możliwy wzrost zużycia węgla w scenariuszu wys_eko_high do roku 2015 i dalej szacowany jest w granicach 7-8 mln ton. Co warte podkreślenia, wzrost ten możliwy jest w warunkach obowiązywania restrykcyjnych regulacji ekologicznych.
Go to article

Authors and Affiliations

Mariusz Kudełko
Wojciech Suwała
Jacek Kamiński

The analysis of induced seismicity of the rock strata in the stope regions in the Rudna mine

Zbigniew Burtan Dariusz Chlebowski Jerzy Cieślik Andrzej Zorychta
Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi Polskiej Akademii Nauk | 2017 | Nr 97 | 145-162
Keywords underground mining copper mining seismic hazard
Download PDF Download RIS Download Bibtex

Abstract

The current rockburst hazard conditions in the copper mines are the consequence of mining-induced seismicity of the rock strata whilst the majority of registered rockbursts have been caused by high-energy seismic events. T he analysis of seismic activity in recent years indicates that the region of the Rudna mine is the region of the highest seismic activity. This paper is an attempt at evaluating the seismicity levels in the Rudna mine in the period from 2006-2015, within the entire mine and in its particular sections. Key parameters of seismic activity include the number of registered seismic events, total energy emission levels, and a unit energy factor. The variability of Gutenberg -Richter (GR) parameters are analyzed and the epicenters’ locations are investigated with respect to the stope position. T he distinction is made between low-energy (103 ≤ As < 105 J) and high-energy (As ≥ 105J) seismic events ahead of the stope, in the opening-up cross-throughs and in the gob areas. It appears that the risk level of a high-energy event occurrence in the R udna mine has not changed in recent years and has remained on a high level whilst the differences in seismic activity, in particular mine sections, are attributed to the varied extraction height and varied thickness of rockburst-prone carbonate layers in the roof of the copper ore deposit. The analysis of the epicenters’ locations with respect to the stope reveals that no matter what the seismic energy levels, the largest number of rockbursts are registered in the opening-up cross-through zone. Low-energy tremors are mostly located in the gob areas, high-energy events occur mostly ahead of the stope. T hus, the evaluation of the seismicity conditions in the Rudna mine seems to positively verify the relationship between the number of registered events and the levels of generated seismic energy, taking the local geological and mining conditions and the specificity of the room and pillar mining method into account.
Go to article

Authors and Affiliations

Zbigniew Burtan
Dariusz Chlebowski
Jerzy Cieślik
Andrzej Zorychta

Influence of the ore deposit thickness on localities of the mining tremors epicentres within the room-and-pillar systems

Dariusz Chlebowski Marek Świeżowski
Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi Polskiej Akademii Nauk | 2018 | Nr 107 | 149-170 | DOI: 10.24425/znigsme.2018.125801
Keywords underground copper mining rockburst hazard mining tremors
Download PDF Download RIS Download Bibtex

Abstract

Mining-induced seismicity, particularly high-energy seismic events, is a major factor giving rise to dynamic phenomena within the rock strata. Rockbursts and stress relief events produce the most serious consequences in underground mines, are most difficult to predict and tend to interact with other mining hazards, thus making control measures difficult to implement. In the context of steadily increasing mining depth within copper mines in the Legnica-Głogów Copper Belt Area (Poland) alongside the gradually decreasing effective mining thickness, a study of the causes and specificity of mining-induced seismicity in specific geological and mining settings may improve the effectiveness of the prevention and control measures taken to limit the negative impacts of rockbursts in underground mine workings, thus ensuring safe working conditions for miners. This study investigates the presumed relationship between the mined ore deposit thickness and fundamental parameters of mining-induced seismicity, with the main focus on the actual locations of their epicenters with respect to the working face in commonly used room-and-pillar systems. Data recalled in this study was supplied by the O/ZG Rudna geophysics station. Based on information about the actual ore deposit thickness in particular sections of the mines (Rudna Główna, Rudna Północna, Rudna Zachodnia) and recent reports on seismic activity in this area, three panels were selected for further studies (each in different mine region), where the ore deposit thickness was varied (panel G-7/5 – Rudna Główna, panel XX/1 – Rudna Północna, panel XIX/1 – Rudna Zachodnia). Data from seismic activity reports in those regions was used for energetic and quantitative analysis of seismic events in the context of the epicenter location with respect to the selected mining system components: undisturbed strata, working face and abandoned excavations. In consideration of the available rockburst control methods and preventive measures, all events (above 1 × 103 J) registered in the database were analysed to infer about the global rockburst hazard level in the panel and phenomena induced (provoked) by blasting were considered in order to evaluate the effectiveness of the implemented control measures.
Go to article

Authors and Affiliations

Dariusz Chlebowski
Marek Świeżowski

Characteristics of low mineralization zones in the central part of the copper ore deposit in the Fore-Sudetic Monocline

Wojciech Kaczmarek Mariusz Dudek Katarzyna Golda Monika Wasilewska-Błaszczyk
Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi Polskiej Akademii Nauk | 2017 | Nr 100 | 79-94
Keywords Fore-Sudetic Monocline copper ore deposit roof elevation of Weissliegend sandstones
Download PDF Download RIS Download Bibtex

Abstract

The presented article describes the relationship between lithological and facies development of reservoir rocks in the area of the roof elevation of the Weissliegend sandstones, with a particular emphasis on the influence of elevation on the occurrence of low mineralization zones in the deposit area. To illustrate the variability of the deposit parameters, closely related to the facies and lithological conditions of the host rocks, three-dimensional lithological and geochemical models for two research areas were developed using the geostatistical methods and based on field observations and the sampling of the deposit. The research area includes parts of the Northern Elevation of Rudna and the surrounding depressions within the boundaries of the Sieroszowice and Rudna deposits. Based on cross-sections of the 3D models, a different deposit formation in the roof elevation area of sandstone formations has been characterized; the lithological profile is defined as „atypical” due to the absence of a copper-bearing shale series, the most characteristic layer for copper ore deposits in the Fore -Sudetic monocline. Large variations in the shape of the deposit and the irregular boundaries of both balance mineralization and enclaves of gangue have been confirmed. The presence of large-scale enclaves of igneous rock in the entire profile of the Lower Zechstein rocks (areas without the balance copper mineralization) and small areas of gangue (sandstone) enriched with anhydrite binders adjacent to the parts of balance deposit located in argillaceous sandstone has been revealed. The possibility of the occurrence of gangue, in the area of the roof elevation of the Weissliegend sandstones directly adjacent to the border with calcareous dolomite, and irregular gangue partings in sandstone formations in the balance deposit was indicated. In addition, small areas of strong enrichment in Cu sulphides were observed in the contact zones between sulphate and clay binders in the Weissliegend sandstone series.
Go to article

Authors and Affiliations

Wojciech Kaczmarek
Mariusz Dudek
Katarzyna Golda
Monika Wasilewska-Błaszczyk

Analysis of efficiency for chosen groups of enrichment operations with respect their cost-consumption on example of copper ore enrichment technology

Daniel Saramak
Gospodarka Surowcami Mineralnymi - Mineral Resources Management | 2006 | No 1 | 23-33
Keywords Copper ore enrichment assessment of enrichment processes energy-consumption of operations
Download PDF Download RIS Download Bibtex

Abstract

In the article there are presented analysis of work effects of OZWR on the basis of blocks of technological operations. It was proposed a distinction of three blocks in all technological copper enrichment system. There was carried out an analysis of demands for energy for individual blocks and on the basis of results obtained a competitiveness assessment of three OZWR districts was also made.
Go to article

Authors and Affiliations

Daniel Saramak
More
×

Citation

Citation style: $citations.get(0)

This page uses 'cookies'. Learn more