backfilling mining method
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backfilling mining method

Backfill - QueensMineDesignWiki

2019-6-28  Mine backfill is soil, overburden, mine tailings or imported aggregate material used to replace excavated zones created by mining operations. Mine fill 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.

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Method of mine backfilling and material therefor - Joy ...

The method of the present invention also provides a backfill which is able to support men and machinery shortly after backfilling has been completed and which is not subject to reliquidification subsequent to placement. Accordingly, one object of this invention is to provide a new and improved method of backfilling for underground mining ...

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“采充并行”式保水采煤方法 - CHINACAJ

The method applies the mining pattern of “backfilling while mining” so it can realize the advantage of fast continuous mining and backfilling mining and a- chieve the work on water-preserved mining.

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Application of a Backfilling Method in Coal Mining to ...

2015-4-29  proposes backfilling schemes for two mainstream mining methods used in China’s collieries, namely, continuous mining and fully mechanised coal mining.

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Application of a Backfilling Method in Coal Mining to ...

For fully mechanised coal mining, a different backfilling method should adopted to address the unique nature of the coal mining face and equipment used. The hydraulic support is characterised by its backfilling function, which is capable of pumping paste backfilling material into

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(PDF) Underground mining with backfills - ResearchGate

The backfilling of mines is an integral part of the mining process and requires the same level of attention generally afforded to the more commonly recognised "profit

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Subsidence prediction method of solid backfilling

2017-11-28  Backfill mining, other filling mining methods, or sectional filling is the preferred means to exploit coal resources buried under buildings, water bodies, and railways as well as the best method to recover coal pillars under industrial squares.

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Reliability analysis and design of backfill in a cut-and ...

Backfilling has been used increasingly in underground mines as a support medium in/around mining areas. The mining method known as cut-and-fill, which incorporates backfilling in its operational cycle, is ranked as a major method of underground mining. Even the room-and-pillar mining and sublevel stoping methods also employ backfills such that the remnant pillars can be recovered after the primary mining operations have been completed. As a general rule, backfill

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Surface collapse control under thick unconsolidated layers ...

With these risks in mind, this study proposes a backfilling strip mining method via determination of the appropriate longwall face length and mining height to guard against bearing structure failure and thus avoid surface collapse. A field trial of the technique was

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Application of a Backfilling Method in Coal Mining to ...

The schematic details for backfilling methodology in a continuous mining face are shown in Figure 5, the coal seam is divided into strips by a skip-mining method. The first round of mining leaves a certain width of coal pillars, this preliminary coal excavation is a type of room and pillar method, where pillars are left to support the roof in ...

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“采充并行”式保水采煤方法 - CHINACAJ

The method applies the mining pattern of “backfilling while mining” so it can realize the advantage of fast continuous mining and backfilling mining and a- chieve the work on water-preserved mining.

More

Method of mine backfilling and material therefor - Joy ...

The method of the present invention also provides a backfill which is able to support men and machinery shortly after backfilling has been completed and which is not subject to reliquidification subsequent to placement. Accordingly, one object of this invention is to provide a new and improved method of backfilling for underground mining ...

More

Application of a Backfilling Method in Coal Mining to ...

2015-4-29  Energies 2015, 8 3631 (a) (b)Figure 2. Comparison of an ancient mining method and current mechanised mining without backfilling. (a) The ancient mining method described in The Tiangong Kaiwu, published in 1637; (b) The current mechanised mining method; the method is characterised by its caving system, which is both economical and efficient to enable high productivity.

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(PDF) Underground mining with backfills - ResearchGate

The backfilling of mines is an integral part of the mining process and requires the same level of attention generally afforded to the more commonly recognised "profit-producing" parts of the ...

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Article: Wongawilli roadway backfilling coal mining

2019-3-19  International Journal of Oil, Gas and Coal Technology; 2019 Vol.20 No.3; Title: Wongawilli roadway backfilling coal mining method - a case study in Wangtaipu coal mine Authors: Liqiang Ma; Zhiyuan Jin; Wenpeng Liu; Dongsheng Zhang; Yao Zhang. Addresses: State Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou

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Reliability analysis and design of backfill in a cut-and ...

The mining method known as cut-and-fill, which incorporates backfilling in its operational cycle, is ranked as a major method of underground mining. Even the room-and-pillar mining and sublevel stoping methods also employ backfills such that the remnant pillars can be recovered after the primary mining operations have been completed.

More

(PDF) Underground Mining with Backfill Tony Grice ...

Grice A. 1998, The 2nd Annual Summit – Mine Tailings Disposal Systems, Brisbane Underground Mining With Ba ckfill By A Grice 1 Introduction include waste development rock, deslimed and whole mill tailings, quarried and crushed aggregate, and alluvial or aeolian Backfill is

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Different back fill materials used in underground

2018-4-16  In addition, CAF serves as crown pillar for mining stopes beneath. In a transverse method, the primary stope is filled with CAF to provide the support and competent wall while the secondary stopes are extracted. In a cut and fill method, the CAF is applied on the underhand method and is used to provide a stable back while mining the ore beneath ...

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Surface collapse control under thick unconsolidated layers ...

With these risks in mind, this study proposes a backfilling strip mining method via determination of the appropriate longwall face length and mining height to guard against bearing structure failure and thus avoid surface collapse. A field trial of the technique was

More

“采充并行”式保水采煤方法 - CHINACAJ

The method applies the mining pattern of “backfilling while mining” so it can realize the advantage of fast continuous mining and backfilling mining and a- chieve the work on water-preserved mining.

More

Method of mine backfilling and material therefor - Joy ...

The method of the present invention also provides a backfill which is able to support men and machinery shortly after backfilling has been completed and which is not subject to reliquidification subsequent to placement. Accordingly, one object of this invention is to provide a new and improved method of backfilling for underground mining ...

More

US4059963A - Method of mine backfilling and

A method of backfilling in underground mine operations by a mill tailings slurry which is dewatered to provide a material with a controlled water content to permit the dewatered material to be used as a backfill without requiring any substantial dewatering after placement and which material can, when desired, be mixed with selected quantities of cement to provide a mortar for backfilling or ...

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The Differences in Underground Mines Dewatering with

2006-6-19  The method was adapted by coal mining to permit high-extraction mining beneath built-up areas on the ground surface by reducing subsidence effects. In the U.S., backfilling of abandoned mine workings through boreholes from the surface has been more recently applied as part of the Abandoned Mined Lands (AML) program of the

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Application of a Backfilling Method in Coal Mining to ...

"Green and Sustainable Mining: Underground Coal Mine Fully Mechanized Solid Dense Stowing-Mining Method," Sustainability, MDPI, Open Access Journal, vol. 9(8), pages 1-18, August. Most related items These are the items that most often cite the same works as

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mining engineering: Backfill

2010-9-20  The method was based on a civil engineering procedure known as Prepakt® that was already employed in the construction of concrete dams and bridge piers. Today, a cement slurry is added to the waste rock before (or as) the stope is filled. In most cases, rock is quarried on surface and dropped to the mining horizon through a fill raise.

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李楼铁矿南部矿体采矿方法探讨与研究

2015-3-28  Key words: mining method gob backfilling method VCR method ore type 收稿日期: 2015-03-28 作者简介 : 石磊(1986-), 男, 甘肃庆阳人, 工程师, 主要从事矿山采矿生产及技术管理工作。

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Different back fill materials used in underground

2018-4-16  In addition, CAF serves as crown pillar for mining stopes beneath. In a transverse method, the primary stope is filled with CAF to provide the support and competent wall while the secondary stopes are extracted. In a cut and fill method, the CAF is applied on the underhand method and is used to provide a stable back while mining the ore beneath ...

More

Experience with Backfilling Underground Voids and Shafts ...

2009-11-1  was the backfilling of shafts №1 and №2, and grouting of adjacent fractured rock through vertical directional boreholes, drilled from the surface around these shafts, (See Fig.1). Principal grouting data for backfilling the underground voids and two vertical shafts of “Maria Mayerova” Coal Mine are presented in Table 1. 844

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Surface collapse control under thick unconsolidated layers ...

With these risks in mind, this study proposes a backfilling strip mining method via determination of the appropriate longwall face length and mining height to guard against bearing structure failure and thus avoid surface collapse. A field trial of the technique was

More
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