backfilling mining method

  • Mining with Backfill QueensMineDesignWiki

    Mining with backfill is a requirement in the industry as it 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 Mine Backfill MiningInfo,This method involves mining sequentially in horizontal lifts beginning at the top of a stope and working downwards. A binder is added to the backfill to create a stable roof under which to work..

  • State-of-the-Art Techniques for Backfilling Abandoned Mine

    Backfilling of mine voids is the most common method of stabilization used to abate subsidence and protect surface structures. Hydraulic flushing and grouting, using remote methods from single or multiple boreholes, are the most often-used methods for the placement of backfill material.Backfill QueensMineDesignWiki,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.

  • (PDF) Underground Mining with Backfill Tony Grice

    Mining Methods using BackfillEarly mining methods either left open voids after the ore had been removed or permitted the caving of the surrounding waste rock. Caving methods often resulted in surface subsidence.Backfill Key Properties Paterson & Cooke,Sep 29, 2020· The mining method may dictate what fill types are applicable. For example, the Avoca mining method cannot be undertaken using a hydraulic fill, and uncemented rock fill cannot be placed in open stopes which will be exposed vertically unless rib pillars or other means of confinement are applied to prevent the waste from cascading into the void

  • (PDF) A review of underground mine backfilling methods

    By contrast, the backfilling mining (also referred to mining with backfilling) becomes the most effective water conservation mining method; nevertheless, traditional longwall backfilling technology.(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.

  • Backfill Key Properties Paterson & Cooke

    Sep 29, 2020· The mining method may dictate what fill types are applicable. For example, the Avoca mining method cannot be undertaken using a hydraulic fill, and uncemented rock fill cannot be placed in open stopes which will be exposed vertically State-of-the-Art Techniques for Backfilling Abandoned ,mining methods, backfilling during the mining operation may be a future option for subsidence control. There are a number of differences between backfilling methods used in active mines to prevent surface subsid-ence and those used in abandoned mines. The greatest difference is the lack of access to abandoned mine voids.

  • US4059963A Method of mine backfilling and material

    Mining method featuring backfilling waste rocks in situ and increasing ore recovery ratio US9441474B2 (en) 2010-12-17: 2016-09-13: Exxonmobil Upstream Research Company: Systems and methods for injecting a particulate mixture WO2012082216A1 (en) * 2010-12-17: 2012-06-21: Exxonmobil Upstream Research CompanyBackfill Practices for Sublevel Stoping System SpringerLink,Thus, backfilling is one of the most critical tasks for sublevel stoping mining systems with delayed backfill. The selection of the type of backfill is a substantial component of backfill design at preliminary stage of mining production.

  • Types of Mine Backfill MiningInfo

    Mining and mineral expliration information. Mining news and job postings, mining and mineral processing technology including drilling, blasting, mining methods, equipment, backfillAssessment of Hydraulic Backfilling in Metal Mines within,mining method is frequently used in conjunction with the hydraulic backfill practice. The generalized sequence of development utilizing this mining method are as follows: 1) Tunnel-like passages are driven from each level station to the ore vein. They are either termed laterals,

  • AU2014344670B2 Solid cementation backfill roadway type

    A solid cementation backfill roadway type mining method for an ultra-thick seam. The ultra-thick seam in a section to be mined is evenly divided into a plurality of sub-layers H according to layer height, and is mined from top to bottom; each sub-layer is divided into a plurality of sub-segments L according to the mining height and the length of a working face coal wall, and is mined atBackfilling in the underground mining industry,Mar 05, 2014· I have had personnel experience with all of the following methods of backfilling in the mining industry. Throughout this information package you will notice the mention of cement/binder. The cement referred to is General Purpose or G.P. cement which is used in conjunction with acid neutral tailings. Binder is a blend of ground steel furnace

  • Subsidence prediction method of solid backfilling mining

    Guo GL, Zhu XJ, Zha JF (2014) Subsidence prediction method based on equivalent mining height theory for solid backfilling mining. Trans Nonferrous Met Underground Mining Methods and Equipment,Keywords: Mining method, underground mining, room-and-pillar mining, sublevel stoping, cut-and-fill, longwall mining, sublevel caving, block caving, backfill, support, If backfilling (to fill mined-out spaces with rock, soil or tailings) is part of the underground operation for improving mining recovery, safety, and mitigating surface

  • Method of mine backfilling and material therefor Joy

    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 orDesign Spans Underhand Cut and Fill Mining,whereas in Figure 2b one is mining by man-entry methods. This necessitates that the factor of safety for the man entry be substantially greater than the non-entry approach. Figure 2: Mining under a consolidated back. 2. Design Constraints Figure 1 shows the factors that have to be accounted for in terms of mining under an engineered back. These

  • Avoca methods of mining Basic Mining Techniques

    1. Overview Avoca Method of mining is a variation of sublevel stoping method with the introduction of waste rockfill as backfill. This method is popular in high grade epithermal vein deposits where the strength and conditions of the walls of the open stopes are weak to moderate and require backfilling of waste rock to stabilise the walls, minimise the ore dilution and maximise the ore recovery.Strength and Elastic Properties of Paste Backfill at the,the backfill to f ail on the upper surface of the beam creates a safer environment for the miners who are working directly beneath the reinforced bottom portion of the beam. Fig. 2. Preparing a stope for backfill. The underhand cut-and-fill mining method works well the majority of the time .

  • Backfill Key Properties Paterson & Cooke

    Sep 29, 2020· The mining method may dictate what fill types are applicable. For example, the Avoca mining method cannot be undertaken using a hydraulic fill, and uncemented rock fill cannot be placed in open stopes which will be exposed vertically unless rib pillars or other means of confinement are applied to prevent the waste from cascading into the voidUS4059963A Method of mine backfilling and material,Mining method featuring backfilling waste rocks in situ and increasing ore recovery ratio US9441474B2 (en) 2010-12-17: 2016-09-13: Exxonmobil Upstream Research Company: Systems and methods for injecting a particulate mixture WO2012082216A1 (en) * 2010-12-17: 2012-06-21: Exxonmobil Upstream Research Company

  • Strength and Elastic Properties of Paste Backfill at the

    the backfill to f ail on the upper surface of the beam creates a safer environment for the miners who are working directly beneath the reinforced bottom portion of the beam. Fig. 2. Preparing a stope for backfill. The underhand cut-and-fill mining method works well the majority of the time . Types of Mine Backfill MiningInfo,Mining and mineral expliration information. Mining news and job postings, mining and mineral processing technology including drilling, blasting, mining methods, equipment, backfill

  • Assessment of Hydraulic Backfilling in Metal Mines within

    mining method is frequently used in conjunction with the hydraulic backfill practice. The generalized sequence of development utilizing this mining method are as follows: 1) Tunnel-like passages are driven from each level station to the ore vein. They are either termed laterals,Mine Backfill Services Paterson & Cooke,Mine backfill, and in particular backfill using hydraulic or paste tailings, is now a well-established and proven practice within the underground mining industry. Notwithstanding mine backfills’ role as part of a forward looking integrated waste management strategy, the application of the technology offers the opportunity to convert resource

  • Design Spans Underhand Cut and Fill Mining

    whereas in Figure 2b one is mining by man-entry methods. This necessitates that the factor of safety for the man entry be substantially greater than the non-entry approach. Figure 2: Mining under a consolidated back. 2. Design Constraints Figure 1 shows the factors that have to be accounted for in terms of mining under an engineered back. TheseUnderground Mining Methods and Equipment,Keywords: Mining method, underground mining, room-and-pillar mining, sublevel stoping, cut-and-fill, longwall mining, sublevel caving, block caving, backfill, support, If backfilling (to fill mined-out spaces with rock, soil or tailings) is part of the underground operation for improving mining recovery, safety, and mitigating surface

  • The differences in underground mines dewatering with the

    The principal reasons for these changes in mining methods are twofold: • Increased ore recovery, and • Decreased environmental impact. The main difference in the environmental impacts between mining with sub-level caving or open stoping and mining with backfilling methods is the reduction in subsidence or the potential for subsidence.Mining methods SlideShare,Oct 23, 2011· Mining methods for s teeply dipping and massive deposits The intermediate and bottom cuts are mined under engineered, cemented backfill. This allows mining width to be increased to 4.9 m and drift rounds drilled up to 3.7 m. Single-boom jumbos prepare the mining face for blasting. A fleet of 2.7 and 4.6 m3 LHD load into 23.5-t haul trucks.

  • Application of a Backfilling Method in Coal Mining to

    This study recommends paste backfilling to replace the space originally occupied by coal resources to avoid such subsidence and proposes backfilling schemes for two mainstream mining methods used in China’s collieries, namely, continuous mining and fully mechanised coal mining.Avoca methods of mining Basic Mining Techniques,1. Overview Avoca Method of mining is a variation of sublevel stoping method with the introduction of waste rockfill as backfill. This method is popular in high grade epithermal vein deposits where the strength and conditions of the walls of the open stopes are weak to moderate and require backfilling of waste rock to stabilise the walls, minimise the ore dilution and maximise the ore recovery.

  • Underground Mining Methods MineralsEd

    The backfill underground serves to keep the mine walls stable and also as the floor for mining the next slice. Mining continues upwards towards the sur-face until the orebody is depleted. Sublevel stoping Sublevel stoping is a mining method in which ore is blasted from different levels of elevation but isTechniques in Underground Mining ILO Encyclopaedia,Backfilling. Backfilling of mine stopes prevents rock from collapsing. It preserves the inherent stability of the rock mass which promotes safety and allows more complete extraction of the desired ore. Backfilling is traditionally used with cut-and-fill but it is also common with sublevel stoping and VCR mining.