COAL MINING WASTE MANAGEMENT AND ITS IMPACT …

Coal mining operations concentrate in a relatively small area of a coal mining basin, where also coal mining wastes are being disposed. In Poland, this is the Upper Silesia coal mining basin. Mechanized coal extraction and a subsequent stage of coal separation processes result in generation of mi-ning waste at the level of 30–50% of coal ...

Waste Rock Dump Management and Stability Evaluation

Waste Rock Dump Management and Stability Evaluation D Olivier SRK The management of mine waste dumps has historically been assigned mainly to the on-site mining operations. In recent years, focus has turned to a more scientific approach to waste rock dump management and the auditing of these manmade structures.

Easy Guide to Mining Waste Characterisation - EESI Group

Waste Rock Characterisation. Ore is divided into oxidised (above the water table); transitional (within the zone occasional inundated by groundwater); and primary (below the water table at all times). This is usually defined by geologists, as it impacts on metallurgy. Waste rock associated with mining ore for precious and base metals, coal ...

How Is Mining Waste Recycled? - Ecocycle Australia

How We Recycle The Big Stuff. Rock and soil need to be moved to gain access to the coal, metal ores or other materials of interest. In some situations, it may be possible to sell rock and soil for a range of purposes as it is usually set aside for rehabilitation of …

Coal waste: handling, pollution impacts and utilization ...

The main rock types in coal mine spoil are usually clayey rocks (clay-stone), mudstone and sandstone often with siderite inclusions. Individual rocks are characterized by different physical and chemical properties, which mainly determine their usability. Depending on where CS is obtained, and the percent share of individual rocks in the total mass of waste, its physical …

Coal waste - Global Energy Monitor

Coal mining and coal combustion in power plants produce several types of wastes: The mining process itself produces waste coal or solid mining refuse, which is a mixture of coal and rock.; The mining process also produces liquid coal waste, which is then stored in impoundments.; Pollution control equipment used for coal combustion produces coal ash or fly …

Characteristics of Crushed Waste Rock Used

In large-scale mining of coal resources in China, solid waste rock is produced and the discharge thereof accounts for about 10–15% of coal production [1–4]. There are many sources of waste rock: roof and floor material, as well as partings in the mining of coal seams and that produced in roadway tunnelling.

How does coal mining cause acid mine drainage? – Colors ...

What waste does mining produce? These wastes can be subdivided into a number of categories: waste rock, mill tailings, coal refuse, wash slimes, and spent oil shale. The mining and processing of mineral ores results in the production of large quantities of residual wastes that are for the most part earth- or rock-like in nature.

Effect of Cyclic Lateral Loading on the Compaction ...

Keywords: green mining; waste rock; backfill mining; compaction behaviour; particle breakage 1. Introduction The mining of coal resources results in the generation of waste rock from washing and mining operations. The waste rock tends to be transported from the underground mine and then piled up on the ground to thus form waste rock dumps [1–3].

COAL REFUSE - Environmental Resources Committee

Pennsylvania regulations define coal refuse as "…any waste coal, rock, shale, slurry, culm, gob, boney, slate, clay and related materials, associated with or near a coal seam, which are either brought aboveground or otherwise removed from a coal mine in the process of mining coal or which are separated from coal during the cleaning or ...

Glossary of Mining Terms - Coal Education

A. Abutment - In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back abutment, that is, the settled …

Reduction and utilization of coal mine waste rock in China ...

In China, coal mine waste rock (CMWR) produced in coal mining and processing is the greatest source of industrial solid waste in terms of production, accumulation volume, and occupied area. There are about 4.5 billion tons of CMWR stockpiled into more than 1700 waste dumps which occupied 150 km 2 of land (Bian et al., 2009, Zhao et al., 2008).

Mining waste - Environment

Mining waste comes from extracting and processing mineral resources. It includes materials such as topsoil overburden (which are removed to gain access to mineral resources), and waste rock and tailings (after the extraction of the valuable mineral). Background. Some of this waste is inert and unlikely to damage the environment.

Environmental Strategies in the Mining Industry: One ...

This waste rock was generated during the construction by a now-defunct mining company of a drainage tunnel. Nearly 900,000 cubic yards of waste rock were placed along Butterfield Creek in unprotected areas and were actively eroding …

Waste rock filling in fully mechanized coal mining for ...

A large amount of waste rock is generated during thin seam coal mining operations underground. The waste rock material stacked on surface also adds to the environmental pollution. So it is important to reduce the amount of waste rock by exploring gainful utilization methods. This paper deals with an investigation undertaken to develop an alternate gob filling …

Mine Tailings Disposal Methods

Waste Rock. Two major methods of underground mining of coal are employed. Room-and-pillar mining is the basic method used in the United States today; however, longwall mining (practiced widely in Europe) is being practiced with …

The reuse and recycling of coal mining waste with zero ...

Coal mining industries generate hundreds of millions of tonnes of waste coal, rock and cleaning waste stream containing fine coal (a by-product of previous coal processing operations), coal gangue, coal sludge, fly-ash, coal mine drainage and coal bed methane (CBM) that contaminate the landscape in the mining areas.

Coal Mining and Production - MIGA

Waste Characteristics Key impacts of surface mining are typically massive disturbances of large areas of land and possible disruption of surface and groundwater patterns. In some surface mines, the generation of acid mine drainage (AMD) is a major problem. Other significant impacts include fugitive dust and disposal of overburden/waste rock.

v118n1a3 Ground control in mining steeply dipping coal ...

coal pillar strength. For backfilled mining, dry waste rock, cemented waste rock, hydraulic sand fill, and paste backfills have been used. This study focused on backfill with dry waste rock because the cost is relatively low and gravity-driven emplacement of the backfill material can be used for steeply dipping stopes.

UTILIZATION OF WASTE ROCK FROM OIL SHALE MINING

Aggregate from oil shale mining waste rock is produced in sizes 4/16, 16/32 and 32/63 mm as an aggregate manufactured using crushing and screening. Grading of aggregate is performed in accordance with EVS-EN 933-1:1997+A1:2005. Utilization of Waste Rock from Oil Shale Mining 325