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dolomite mining methods in south africa

DEPARTMENT OF PUBLIC WORKS - Gov

2018-12-9  2.5 Distribution of Dolomite in South Africa Dolomite land occupies up to 25 percent of Gauteng and underlies some of the most densely populated areas such as Bekkersdal, Katorus, Centurion, Dobsonville, Deapmeadow etc. The distribution of dolomitic land in South Africa is shown on the attached Figure 1. 3.

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Dolomite Guideline - DWS

2010-4-30  Dolomite is a single mineral consisting of the chemical combination of calcium and mag-nesium carbonate (CaMg(CO 3) 2). The rock In South Africa the word ‘Dolomite’, where it denotes the rock type, has substituted the word ‘Dolomitic Limestone’. Dolomitic Limestone, as a natural rock, consists of the mineral dolomite (CaMg(CO 3) 2

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The risks associated with mines in dolomitic compartments

2009-8-26  and various mining methods are used for the extraction of gold. These methods include The risks associated with mines in dolomitic compartments by T.A. Ngcobo* ... Figure 1—A map showing the distribution of dolomite in South Africa (source: Department of Public Works, August 2004)

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(PDF) Construction on dolomite in south Africa

1986-3-1  Sinkholes can occur on land underlain by dolomite and cause substantial damage to buildings and even loss of life. More than four million people work or reside on dolomite land in South Africa

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A REVIEW OF THE DOLOMITE AND LIMESTONE

readily available in all major cities in South Africa and the SADEC region. The South African lime industry differs in three ways from other industrialised countries: firstly, limestone deposits in North America and Europe are widespread and of good quality, whilst in South Africa, isolated high-grade deposits of limestone occur.

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Construction on dolomite in south Africa SpringerLink

Damage to structures and loss of life have been more severe on dolomite than on any other geological formation in southern Africa. The subsidence that occurs on dolomitic terrain following development or during dewatering has given dolomite a notorious reputation and engineers and geologists became reluctant to recommend development on the material.This has led to the pioneering of founding ...

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TECHNICAL PAPER Sinkhole and subsidence inStitution of ...

2018-8-13  dolomite bedrock in the Gauteng Province, South Africa.Although dolomite land is found across several South African provinces, sinkhole and subsidence formation in Gauteng, the economic hub of South Africa, has been considerably more severe than in other provinces. Thousands of sinkhole and subsidence events have occurred in the past 50 years.

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impact of mining activities in South Africa S. Chevrel ...

2014-5-14  industrialised Gauteng, the most populous province of South Africa. Since the onset of mining, and especially since the early 1960s, some of the dolomitic compartments have been dewatered, to allow mining to proceed safely below the dolomite (Jordaan et a/., 1960) In areas where karst and

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Rehabilitation of sinkholes and subsidences on Dolomitic ...

The various sinkhole and subsidence rehabilitation methods used on dolomite in South Africa and their applications are discussed, including: the Inverted Filter Method, Dynamic Compaction Method, combination of the Inverted Filter and Dynamic Compaction Methods, Compaction (backfill) Grouting Method, Combination of the Inverted Filter and Compaction Grouting Methods, Combination of the Dynamic Compaction and

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Guidelines for sinkhole and subsidence rehabilitation ...

2016-5-1  In the South African karst environment the gravity method is regarded as the most successful geophysical method to determine dolomite bedrock topography and the thickness and density of overburden material (Kleywegt and Pike, 1982).

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Dolomite Guideline - DWS

2010-4-30  Dolomite is a single mineral consisting of the chemical combination of calcium and mag-nesium carbonate (CaMg(CO 3) 2). The rock In South Africa the word ‘Dolomite’, where it denotes the rock type, has substituted the word ‘Dolomitic Limestone’. Dolomitic Limestone, as a natural rock, consists of the mineral dolomite (CaMg(CO 3) 2

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Construction on dolomite in south Africa SpringerLink

Damage to structures and loss of life have been more severe on dolomite than on any other geological formation in southern Africa. The subsidence that occurs on dolomitic terrain following development or during dewatering has given dolomite a notorious reputation and engineers and geologists became reluctant to recommend development on the material.This has led to the pioneering of founding ...

More

Zimbiwa Dolomite, South Africa

2003-11-21  Products: Dolomite stone products for the concrete and building industry, washed dolomite sand for asphalt, and metallurgical dolomite for the steel and ferroalloy industries. Mining method: Opencast.

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Construction on dolomite in south Africa - NASA/ADS

Damage to structures and loss of life have been more severe on dolomite than on any other geological formation in southern Africa. The subsidence that occurs on dolomitic terrain following development or during dewatering has given dolomite a notorious reputation and engineers and geologists became reluctant to recommend development on the material.

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Rehabilitation of sinkholes and subsidences on Dolomitic ...

In South Africa most sinkholes and subsidences have been recorded on dolomite of the Malmani Subgroup of the Chuniespoort Group on the Far West Rand and in an area south of Pretoria within the City of Tshwane, with numerous studies done on the occurrence of sinkholes and subsidences in these two areas.

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Zimbiwa Dolomite, South Africa - miningweekly

2003-11-21  Zimbiwa Dolomite, South Africa. Name: Zimbiwa Dolomite. Location: Benoni, Gauteng. Brief history: Black economic empowerment mining company formed in 2001. Brief description: The company’s ...

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SANS 1936 and related standards - SABS

2012-10-17  SANS 633 Soil profiling and ... borehole logging on dolomite land SANS 634 Geotechnical investigations for township development ... 13 967 road deaths in South Africa ... Buttrick’s “Scenario Supposition” method • Looks at various scenarios: – Static water table – Uncontrolled drawdown of WT.

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Guidelines for sinkhole and subsidence rehabilitation ...

As South Africa is a jurisdiction on the African continent with much experience in mining, there are many lessons that are applicable to emerging countries in the region who wish to attract the ...

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Guidelines for sinkhole and subsidence rehabilitation ...

2016-5-1  On the Far West Rand of South Africa, sinkholes induced by the dewatering of dolomite groundwater compartments for gold mining caused the loss of life of 38 people (De Bruyn and Bell, 2001). A community of approximately 30 000 households was relocated to safer ground in a dolomite area west of Johannesburg, South Africa, at a cost exceeding US ...

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Dangerous development on dolomite: spatial considerations ...

2017-4-12  The article considers the spatial distribution and settlement type characterisation based on spatial layout and dwelling types for various low-income settlements found on dolomite in Gauteng and surrounding areas (Gauteng City Region). Settlement types that were considered, based on aerial photography, cadastral information and field verification, include informal settlements, formal housing ...

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Dolomite Guideline - DWS

2010-4-30  Dolomite is a single mineral consisting of the chemical combination of calcium and mag-nesium carbonate (CaMg(CO 3) 2). The rock In South Africa the word ‘Dolomite’, where it denotes the rock type, has substituted the word ‘Dolomitic Limestone’. Dolomitic Limestone, as a natural rock, consists of the mineral dolomite (CaMg(CO 3) 2

More

Zimbiwa Dolomite, South Africa

2003-11-21  Products: Dolomite stone products for the concrete and building industry, washed dolomite sand for asphalt, and metallurgical dolomite for the steel and ferroalloy industries. Mining method: Opencast.

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SCHOOL OF ENVIRONMENTAL SCIENCES - adammbedzi

2013-3-6  Syferfontein Dolomite mine (Pty) Ltd is found in Limpopo Province of Republic of South Africa. It is approximately 8 km from N1 road and it is located at Mopane about 8 km from the N1/R525 intersection and about 40 km south of Musina .It is located between latitude 22˚37’20” South

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Guidelines for sinkhole and subsidence rehabilitation ...

As South Africa is a jurisdiction on the African continent with much experience in mining, there are many lessons that are applicable to emerging countries in the region who wish to attract the ...

More

SANS 1936 and related standards - SABS

2012-10-17  SANS 633 Soil profiling and ... borehole logging on dolomite land SANS 634 Geotechnical investigations for township development ... 13 967 road deaths in South Africa ... Buttrick’s “Scenario Supposition” method • Looks at various scenarios: – Static water table – Uncontrolled drawdown of WT.

More

Determining hydraulic parameters of a karst aquifer using ...

2018-11-6  in South Africa, as well as a range of strong associated karst springs. Gold-bearing reefs below the dolomite have been sub-ject to extensive deep-level mining for many decades. Following a sudden and nearly catastrophic inrush of dolomitic ground-water to the Driefontein Mine in October 1968, it was found

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Hydrochemical and isotopic approach to dynamic recharge

2019-3-5  The dolomite aquifer is the largest water source in northern South Africa. The flow dynamics of the dolomite aquifer is investigated by using analyses of the hydro-chemical parameters and isotopes (3 H, δ 2 H, δ 18 O, δ 13 C-DIC and 14 C-DIC) of spring samples.Recharge areas of the dolomite aquifer are confirmed through interpretation of the hydro-geochemical types of the spring samples.

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HDPE Structured Wall Sewer / Stormwater Pipe Manholes

2020-8-18  Dolomite Land in South Africa 6 SINVACLITE™HDPE Structured Wall Pipe Northern Cape, Limpopo, Mpumalanga, North West and approximately 25% of Gauteng is underlain by Dolomite rock that become water soluble over time. HDPE Pipes, Fittings and Manholes are the recommended materials to be used in these areas.

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GC4W7DA Blyvooruitzicht Sinkholes (Earthcache) in Gauteng ...

Dolomite dissolves in acidic water, forming underground cavities and caves such as those at the Sterkfontein caves in Gauteng and the Cango caves near Oudtshoorn, Western Cape, South Africa. Sinkholes are dramatic, because the surface land usually stays intact until

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3D edge detection seismic attributes used to map

2019-1-14  The deep gold mines of South Africa employ labor-intensive mining methods with as many as 5000 miners working in a single shaft. The miners face various hazards, including rock falls, rock-bursts associated with mining-induced seismic events, moving trains transporting ore and waste rock, handling of explosives, in-

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