1 edition of High density backfill for underground mines. found in the catalog.
High density backfill for underground mines.
|Contributions||Dynatec Mining Limited., Golder Associates Ltd.|
|LC Classifications||TN290 .H54 1991|
|The Physical Object|
|Pagination||1 v. (various pagings) :|
For abandoned mine shafts, some problems linked to deterioration of the sealing structure at the shaft head, or movement of backfilling material in the shaft have been observed. It is also common to find mine shaft opened even decades after mining activity. With time, it is also possible that mine File Size: 1MB. Evaluation of Backfill Materials and Installation Methods for High Density February Polyethylene Pipe. 6. Performing Organization Code TECH 7. Author(s) 8. Performing Organization Report No. Priyantha W. Jayawichrama, Aruna L. Amarasiri, Pedro E. Region, M. Didarul A lam 9. Performing Organization Name and Address File Size: 9MB. A void in a mine is backfilled by a backfill slurry comprising water, an inert filler, e.g. mine tailings, and a binder, e.g. cement, lime or slag, to which a gelling agent, e.g. sodium silicate, is added just before placement. USA - Backfilling in mines - Google Patents Backfilling in mines Download PDF Info Publication number Cited by: Tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an gs are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed.. The extraction of minerals from ore can be done two ways: placer mining, which uses water.
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The book presented mine backfill design concepts and procedures, physical and mechanical properties of backfill and their measurement. Analyzed are backfilled stope stability analysis and design and is presented the research on new method for minimizing the amount of cement used in backfilled : $ backfill with high content of rock salt with MgCl 2 brine leads to a long-term stable backfill with high stiffness (Young’s modulus > 20 MPa).
Crushed salt is the most used backfill material in salt mines. With particle diameter less than about 60 mm initial porosity obtained by. Underground reutilization (Fig. 2) of chemotoxic and comparatively benign waste as backfill is practiced at, among others, the Werra High density backfill for underground mines.
book mine (K+S) and the Bernburg (K+S) and Kochendorf (SWS) rock salt mines, and this practice has been validated by long-term safety assessment. Backfilled chambers at these sites provide the same degree of. Simem Underground Solutions mixers provide high-strength pastefill for mining application.
Highly efficient for mining backfill, pastefill produced on Simem mixers. Backfill is usually made from tailings that are finely ground waste materials produced in all mines after High density backfill for underground mines.
book product/mineral or metal has been removed from the metallurgical process. High density backfill for underground mines. book Coal mining waste tends to be waste rock and ash from a washing plant but could include coal combustion products by: 1.
Backfilling of pastes and long distance transport of high density slurries with double piston pumps Peter Peschken Putzmeister Solid Pumps GmbH, Germany Dirk Hoevemeyer Putzmeister Solid Pumps GmbH, Germany Abstract Filling chambers with pastes in underground mines to increase the safety, climate and cut-off grade is state of the : Peter Peschken, Dirk Hoevemeyer.
Mine High density backfill for underground mines. book is an integral component of mines' design and method with many operations utilizing backfill as a means to aid the stabilization of mining-related voids and the disposing of mining wastes. Concrete is a common additive to backfill material to improve strength and stability in underground excavations.
POSIVA OY Olkiluoto FI EURAJOKI, FINLAND Tel + 31 Fax + David A Dixon Paula Keto May Working Report Backfilling Techniques and Materials. This article deals with the usage of backfill in underground mine design.
For the article on backfill see Backfill. Mining with backfill is a requirement in the industry as High density backfill for underground mines. book is an important aspect of many mining methods and is a solution to many rock stability issues.
When a mine plans to use backfill there are a number of considerations to be made with regards to type of fill, delivery. There are environmental issues with mining, namely with disturbance of groundwater flow and settlement (of the land above and adjacent the mine excavations).
Backfilling prevents and minimizes settlement and minimizes the impact on the hydrology i. Hydraulic backfill is one of the refilling technologies that use water as the transportation medium. to convey the hydraulic backfill materials, such as waste tailings, water hydrophilic slag.
Paste backfill is a high density backfill (>70% solids depending on SG). In order to pump material at this density, a component of fines is required. As a general rule, the fines content. Uses waste rock from the underground workings High density backfill for underground mines. book the mine which cuts down on the size of the waste rock stockpile on the surface.
• Fills the stope quicker. • Relatively low risk of a bulkhead failure due to the lack of pressure caused by the water in the fill if. Backfill of Tailings to Underground Workings.
Figure 1: Filling of an Underground Stope (© Barrick Gold) Introduction. Tailings can be stored below ground in previous worked out voids.
The tailings are generally mixed with a binder, usually cement, and then pumped underground to fill voids and help support an underground mine. Paterson & Cooke Mine Backfill Services Paterson & Cooke Paterson & Cooke is a recognised leader in the design and implementation of mine backfill systems and associated processes.
Since its formation inPaterson & Cooke has consistently provided technologically advanced systems for projects located throughout the Size: 2MB.
backfill can be left in the distribution piping for periods of up to 5 days without flushing. This approach was followed for the Preussag system at Bad Grund Mine where the cement was conveyed to the stopes via a pneumatic pipeline system (Lerche and Renetzeder).
As the capital and operating costs forFile Size: KB. Abstract. This paper reviews the design and application of paste backfill in underground hard rock mines used as ground support for pillars and walls, to help prevent caving and roof falls, and to enhance pillar recovery for improved by: The backfill plant at Olympias Mine can produce high density fill using both coarse tailings from cycloned tailings and total tailings from the processing plant (Figure 3).
Figure 3 Olympias backfill plant System rates The backfill plant has a nominal production capacity of 35 m3/h with a peak of 42 m3/h cemented backfill atAuthor: Hendrik Grobler, Vasileios Chatziefstratiou, Ourania Mousli, Mehmet Yumlu. underground mining operations: design of ore pass systems for underground mines; innovative management techniques at kiena gold mines limited; shaft collaring through deep overburden - a novel approach; research into high density backfill placement methods by the ontario division of inco limited; redced wear on mine car wheels in the kiruna mine [5 papers] pamphlet – Author: et al Hambley, D.F.
Mining Science and Technology, 4 () 75 Elsevier Science Publishers B.V., Amsterdam - Printed in The Netherlands HYDRAULIC BACKFILL DESIGN TO OPTIMIZE SUPPORT AND COST EFFECTIVENESS M.J.
Scoble and L. Piciacchia Department of Mining and Metallurgical Engineering, McGill University, Montreal (Canada) (Received 3 March ; accepted 6 May ) ABSTRACT Hydraulic backfill Cited by: 5. This paper reviews the design and application of paste backfill in underground hard rock mines used as ground support for pillars and walls, to help prevent caving and roof falls, and to enhance.
A mine site selected to study the high-density backfill system for mill tailings runs an underground copper and zinc mine.
The mine, currently the Turkey’s largest copper and zinc producer, is situated close to the town of Cayeli, which is located about 25 km.
STATE-OF-THE-ART TECHNIQUES FOR BACKFILLING ABANDONED MINE VOIDS By Jeffrey S. Walker1 ABSTRACT Abandoned underground mine openings are susceptible to collapse because of the mining methods used, the character of the overburden, and the typicallylarge, wide entries with minimal roof Size: 1MB.
Underground mine backfilling is a form of ground improvement that has to be carried out in the mine sites. The backfilling provides ground support and regional stability, thus facilitating ore removal from nearby regions. The large underground voids created by the ore removal are backfilled with the waste tailings in the form of paste fills, hydraulic fills, and by: Underground Mining Methods presents the latest principles and techniques in use today.
Reflecting the international and diverse nature of the industry, a series of mining case studies is presented covering the commodity range from iron ore to diamonds extracted by operations located in all corners of the world.
Industry experts have contributed 77 chapters/5(5). The Department of Mining Engineering at Queen's University conducted a survey of backfill practices and a survey of the economics of backfilling in underground mines across Canada.
The survey of backfill practices was aimed at assessing the current state of backfill usage and the knowledge base in backfill design, from preparation through.
The high rock stresses which result from deep mining operations can be relieved by backfilling. Initially, waste rock was used to fill the openings left by mining operations, though with mixed results. The need to improve safety and reduce costs has prompted the mining industry to investigate alternative backfill Cited by: Cemented paste backfill (CPB) or cemented tailings backfill (CTB) has gained increasing popularity for the safe refilling of underground mine openings in Canada, Australia, China, Turkey, South Africa, and the United States [8,9,10,11,12,13,14,15].Having a relatively low strength and requiring reduced amounts of complex materials, CTB is usually prepared by dewatering slurries of processing Cited by: with mine backfill to achieve % ore extraction.
The stoping sequence involves mining to the side of and under very large backfill masses, requiring high volumes of high strength fill. As with many mines, backfill reliability and quality is critical to the success of the Malu underground mine.
In Outotec was requested to help optimise. Currently use of high density backfill is not a routine operation for underground coal mines in the U.S.
but has been used quite regularly in longwall coal mines in Germany and Poland for several decades. Further, this paper considers backfill disposal in underground coal mines located primarily in the Illinois Basin of the United by: Mining is carried out using long-hole stoping with mine backfill to achieve % ore extraction.
The stoping sequence involves mining to the side of and under very large backfill masses, requiring high volumes of high strength fill. As with many mines, backfill reliability and quality is critical to the success of the Malu underground mine. The mine initiated a research project, funded in part by the EU LIFE Environment Programme, to demonstrate the viability of disposing of the clay waste underground in mined out areas as a high density backfill.
The gravity head available is to be used to feed the backfill via a piping system to the old underground workings. Janu RPS: RPS-SEAGC GEOTECHNICAL PROPERTIES OF MINE FILL H. Sawa and E. Villaescusab Western Australian School of Mines, Australia. E-mail:@, [email protected] Mine ﬁll is the material placed underground to ﬁll the voids created by miningFile Size: KB.
MixOnSite is a nationwide contractor specializing in low density foam concrete. We provide owners, engineers, and contractors with unique, cost effective solutions to their geotechnical and underground construction problems. MixOnSite offers complete installation services including technical mix design support and development.
Full tailings paste backfill is being used in hard rock mines, is proving to be a viable and economic alternative to other backfill methods. Paste backfill has the following advantages over an hydraulic backfill: Paste is an environmental friendlier backfill - it exudes virtually no water on placing and as a result requires less water management.
When an underground pipe or structure is abandoned, the two basic options that are considered are (1) pipe abandonment, or (2) removal. The removal option is often not feasible or cost-effective. A structure or pipeline that is abandoned in place without filling may deteriorate and lead to ground subsidence which in turn creates the potential.
The focus of this work has been to investigate the status of backfill technology, in particular paste backfill, a relatively new technology.
A rationale specifically for paste backfill system design has been developed. To date, a limited number of mines have implemented paste backfill systems. An extensive survey of backfill literature and a review of paste backfill operations in practice was Cited by: 1.
Local pipes manufacturer Marley Pipe Systems sold several of its newly launched MegaTuff co-extruded flame-retardant high-density polyethylene (HDPE) and ventilation pipes for underground mining. K-UTEC AG Salt Technologies Sondershausen Backfilling and Pillar Re-Mining in Potash Industry C:\Users\Fliss\Daten-Fl\40 Präsentationen\ K-UTEC Präsentationen\ Minefill \paper_kutec_minefill / Page 2 of 14 The first backfilling activities based on excavated rock salt from so called “Bergemühlen” as a bulk.
The term “deep mine” is synonymous with “underground mine” or “subterranean mine”. (In British usage, the unqualified use of the word “mine” generally means a deep mine).
Deep mines can be further differentiated into “drift mines” or “shaft mines” depending on the mode of access to the underground File Size: 2MB. Westpro Machinery’s solution is a combination of a High Capacity Thickener pdf a Pdf plant to discharge tailings and backfill to underground stopes.
Westpro Paste Backfill plant is able to dewater t/d and produce paste backfills up to 85% solids. Solution # 3 would be used with either Solution # 1 or Solution # 2 when backfill.ASSESSMENT OF HYDRAULIC BACKFILLING IN METAL MINES WITHIN THE STATE OF IDAHO In July ofthe state of Idaho acquired primacy over the Underground Injection Control (UICl program from the U.S.
Environmental Protection Agency (EPA), to be administered by the Idaho Department of Water Resources (IDWR).File Size: 1MB. InAndaychagua mine continued the preparatory work for ebook drilling in the high zone ebook, which resulted in a tpd production increase, for a total of 3, tpd of mine capacity.
Also, work was completed on the water-pumping system infrastructure for the deepening of the mine, making it possible to develop levels and