ventilation arrangement in subleval caving mining layout

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DE102005043236A1

In the inventive arrangement for browsing extracting extraction products in caving, wherein the extraction product through a discharge funnel 10 downwardly to a removing track 11 withdrawn and is passed from this, arranged in a conveying path discharge conveyor, wherein the extraction path transversely between the conveying path 13 and a parallel to this ascended auxiliary path 12 , is ....

Design rules for avoiding draw horizon damage in deep ,

The Journal of The South African Institute of Mining and Metallurgy MAY/JUNE 1999 151 Introduction Block caving is described by Laubscher 1994 as the lowest cost underground mining method provided that the extraction layout is designed to suit the caved material and the draw horizon can be maintained for the life of the draw...

Sublevel Caving

Sublevel caving is a systematic method and uses regular layouts and working procedur , These all have a strong effect on the application and the layout of the method A vertical dip is the best , Ventilation- In this method through ventilation in the active mining area is not possible...

mining and mines Block Caving

Block Caving Block caving is an inexpensive bulk mining method where the ore is drawn by gravity and which is suitable for ore bodies which are low grade and are consistent in their grad Depending on how the ore is broken there are three block caving systems 1 The Grizzly system for fine material, 2 the slusher system for coarser material ....

Sublevel caving

Assessment of Ventilation Circuit for Block Caving Production Level Drifts , level drifts within the block caving layout at the El Teniente mine In order to simulate the ventilation network ....

Ventilation and Cooling in Underground Mines

The main objective of mine ventilation is the provision of sufficient quantities of air to all the working places and travel ways in an underground mine to dilute to an acceptable level those contaminants which cannot be controlled by any other means...

Underground Mining Methods Handbook

Principles of Stope Planning and Layout for Ground Control Cut-and-Fill at Mount Isa Mines, Ltd , Sublevel Caving at the Stobie Mine Sublevel Caving at LKAB s Kiirunavaara Mine Sublevel Caving Practice at Shabanie Mine, Rhodesia , New Development in Mine Ventilation Life Support in Underground Mines Dust Control Product Reviews...

Block Caving Method Underground Mine Design ,

Describe the Block Caving Method Block is the mining layout which divides the orebody into sections Caving of the rock mass is induced by undercutting the block -->the rock section underneath the block is fractured by blasting which destroys its ability to support overlaying rock...

coal crushing arrangement

arrangement method for longwall topcoal caving mining This 3D without coal pillars, which arranged the air intake roadway and air return roadway in different horizons, realizing the design theory 5 and 6, the section coal pillar in traditional top coal caving was ,...

Diploma in Mine Ventilation

Diploma in Mine Ventilation This is a three year programme done on full time Candidates holding an Advanced Certificate in Mine Ventilation with an acceptable level of experience in the mining industry may be admitted at third year level...

MINE VENTILATION SYSTEMS

Figure 9-1 Basic ventilation system underground where D is a ventilation door or airlock, R is a mine regulator and 1, 2, 3 are working places with a surface exhaust fan To maintain adequate ventilation through the life of a mine, careful advance ventilation planning is essential...

Shock losses characterization of ventilation circuits for ,

This paper presents results obtained from a simulation based on Computational Fluid Dynamics CFD , in combination with a mine ventilation network solver, to determine the head losses for the ventilation circuits of the production level drifts within the block caving layout at the El Teniente mine...

GEOLOGY, NATURAL BEAUTY TECHNOLOGY Coal Coal Mine ,

ing the method of Inclined Slicing Roof Caving Long Wall Mining along the Strike, and the sequence of slices mining from top to bottom Mining of 1101 coal face initiates caving from the lowest strata in the immediate roof and propagates upward into the Gondwana Formation ,...

Underground mining hard rock

Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, usually those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds or rubi Soft rock mining refers to excavation of softer minerals such as salt, coal ....

SUBLEVEL CAVING TECHNIQUE by Partha D Sharma

Jun 25, 2010 0183 32 Sublevel caving is usually carried out when mining of the orebody through an open pit method is no longer economically feasible Mining now proceeds underground, underneath the ,...

Sub Level Caving Free Essays

The wall caving is induced by mining the ore in controlled sequence, usually from hanging wall to footwall and from top to bottom Sublevel caving is often used in conjunction with surface mining Sublevel caving extracts the ore via sublevels, which are ,...

Caving Underground Mining Methods longwall, Sublevel ,

Oct 23, 2014 0183 32 Caving Underground Mining Methods longwall, Sublevel caving, Block caving 1 This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course instructors...

sublevel block caving equipment

Underground Mining Methods and Equipment equipment and transferred to orepasses, ,sublevel stoping, cut-and-fill, longwall mining, sublevel caving, block caving, backfill, support, ventilation, ,...

Failure Characteristic and Fracture Evolution Law of ,

Failure Characteristic and Fracture Evolution Law of Overburden of Thick Coal in Fully Mechanized Sub-level Caving Mining Pencirian Kegagalan dan Evolusi Retakan Hukum Beban Atas Arang Batu Padat dalam , layout of grouting borehole, therefore, research of failure ....

Sandra s Cave Mining Handbook

CAVE MINING HANDBOOK _____ Page 2 of 138 Chapter 1 INTRODUCTION The object of this handbook is to highlight factors which lead to problems in cave mining and to summarize the contents of the Manual on Block Caving so as to provide a reference on all facets of cave mining...

Improved underground mine design for reducing subsidence ,

a Road way arrangement of the Barapukuria coal mine, NW Bangladesh CMC, 1999 b The development plan of the road way and 1101 coal face tunnel of the BCM CMC, 2003 The sub-level haulage entry belt conveyor gate and air return entry track gate are laid out in parallel to the coal face...

The Optimum Arrangement of Working Face Ventilation ,

It was most effective and practical that using computational fluid dynamics simulation to analyze the distribution of flow field in gob for studying optimal layout scheme of the working face ventilation system In this paper, numerical simulation was applied for studying the migration laws and high concentration of gas gathering area of N1201 working face in Tunliu Coal Mine the gob of ....

Underground Mining Methods and Equipment

stoping, cut-and-fill, longwall mining, sublevel caving, and block caving The second section describes underground mining equipment, with particular focus on excavation machinery such as boomheaders, coal cutters, continuous miners and shearers 1 Underground Mining Methods 11 Classification of Underground Mining Methods...

Mining Engineering < Colorado School of Mines

Design and layout of sublevel caving, block caving, open stoping and blasthole stoping systems Equipment selection, production scheduling, ventilation design, and mining costs Prerequisites MNGN314, MNGN516 2 hours lecture, 3 hours lab 3 semester hours Spring of odd years...

Sublevel Caving

Sublevel caving has great potential possibilities, but unfortunately it is often not recognized that this method requires very careful planning and control In the evaluation of different parameters there are some which cannot be controlled, while others are affected by layout, work procedures or equipment...

Design and Operational Issues for Increasing Sublevel Cave ,

of sublevel cave stop In particular, the effects of increased sublevel intervals were investigated in order to under stand their impact upon stop recovery The investigation included review of the flow theory for caving rock, physical model tests and underground mine observation...

4 History of underground mining

stoping, the Janelid method analogous to an inclined cave and block caving were all considered as mining methods Sub-level open stoping was introduced in a trial mining block but, after failure of the method due to premature caving ofthe sill, the mine reverted to mechanized block caving in 1989, a method that is still being used 5...

Statistical Analysis on Characteristics of Gas Emission in ,

Characteristics of gas emission in face 40108 were analyzed The results show that the high-position tunnel system and the grouting system are the effective gas control systems, and 83 gas emission rates in face 40108 come from gob When monitoring points away from coal face about 33-38m and 78-93m in strike direction, gob gas concentrations reach to 5 and 10 , respectively...

Planning Considerations for Deep Level Mining at ,

compared to other sub-level caving operations The mining horizon of the HWL is currently at the 9715 Level, 810 m below surface , 3 Mine design and layout The overall mine design and layout for Perseverance is rationalised and includes provisions for mine services and ventilation, emergency egress and refuge, and has adequate materials ....

3D Characterization of Mine Ventilation Circuits for Block ,

combination with a mine ventilation network solver, to determine the head losses for the ventilation circuits of the production level drifts within the block caving layout at the El Teniente mine ....