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 ... As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.
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POSIVA OY Olkiluoto FI27160 EURAJOKI FINLAND Tel 35828372 31 Fax 35828372 3709 David A Dixon Paula Keto May 2009 Working Report 200856 Backfilling Techniques and Materials
Numerous studies have attempted to address this problem 16 and to estimate the influence 7 with different methods 8 Backfilling mining technology is a well‐known technique for controlling surface deformation widely used in China and other Asian countries 9 Poland 10 11 and Australia 1215 it solves the problem of gangue accumulation 16
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 oftenused methods for the placement of backfill material
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
Using gangue backfilling in underground coal mining not only controls the roof deformation in the gob area but also reduces the amount of mining waste rock However due to the limitations of the complicated engineering conditions backfilling mining in the steep coal seam
May 13 2015 · 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 others
The backfill tailings are generally mixed on the surface with the cement in a small processing plant and then piped either down a decline shaft or surface boreholes into the area of the mine that requires backfilling Figure 2 Paste backfill plant with deep cone thickener Lisheen Mine Ireland ©
The extraction method based in principal on drill and blast mining The full mining height was reached by the application of overhand stoping on the excavated material After the complete excavation of the working the backfilling were realised immediately
Jan 01 2017 · At the backfilling area the solid backfill method is used for coal mining A backfilling hydraulic support and a perforated scraper conveyor are used to backfill the goaf with gangue At the caving area the conventional fully mechanized coal mining method is employed This area is equipped with a conventional fully mechanized hydraulic support