Metode Mine Dewatering

Mine dewatering techniques - SlideShare

23-11-2013· Underground Mine Dewatering Techniques • In underground mines, the conventional approach is to allow groundwater to enter the workings, effectively using the mine itself as a drain • The water entering the mine is passed along roadways (by pumping or gravity) to a deeper part of the mine (sump) or shaft bottom, to be pumped out via shaft or decline • In deeper mines there may be a need for staged pumping to get the water out of the mine …

US20130192822A1 - Mine Dewatering System And Method ...

A system and method for efficiently and effectively removing water from mine areas is presented. In one embodiment, one or more directionally drilled dewatering wells are drilled into the geologic...

(PDF) A phased approach to mine dewatering

Options available to mine management are dewatering, diversion, sealing or a combination of methods. To achieve the most effective, least cost method it is essential that the origin of the ground...

7 Methods Of Dewatering Full Explained | Procedure | Use

30-07-2020· In this methods of dewatering, the soil around the area to be excavated is hardened with a solution of chemical compounds like silicate of soda and calcium chloride. In this method also pipes are lowered into the ground. When a pipe is lowered into the ground, a chemical is forced into it.

Konkola Mine Dewatering Study - IMWA

mine dewatering. To a certain degree the mine induced subsidence altered the infiltration patterns, by increasing permeability of the near surface strata due to the fracturing. AQUIFER CHARACI'ERISTICS During the past thirty years vecy few attempts to calculate basic hydrologic parametres of the area's aquifers have been made.

Some Technical Aspects of Open Pit Mine Dewatering

The mining method to be employed in a new mine or as practiced in an existing mine is also a factor to be considered in a mining dewatering design. Drainage of temporary walls should be different from that of final pit walls. The degree of desired "drying" of the pit bottom

US20130192822A1 - Mine Dewatering System And …

A system and method for efficiently and effectively removing water from mine areas is presented. In one embodiment, one or more directionally drilled dewatering wells are drilled into the geologic formation such that at least a portion of the dewatering well is positioned underneath the mine. In one embodiment, one or more of the dewatering wells may originate outside the perimeter of the mine ...

7 Methods Of Dewatering Full Explained | Procedure | Use

30-07-2020· The process of freezing method of dewatering is as follows: Large pipes of 10 to 15 cm diameter are laid in the ground around the area where excavation is to be done. The spacing between such pipes is 1 to 1.5 m. These pipes are closed at the lower end. …

Mine Dewatering - Waterloo Hydrogeologic

Mine Dewatering. Open pits are developed in the mining industry for the extraction of minerals, raw materials, and aggregate. In many circumstances, these pits are excavated below the water table. Depending on the geologic environment and proximity of streams, rivers, ponds and lakes, significant groundwater inflows may occur.

Mine dewatering system and method by …

Further, in one embodiment, dewatering wells may be drilled in a manner so as to intersect water bearing underground compartments located within the formation. 2WO 2011/148285 PCT/IB2011/051983 [0008] In one embodiment, a hydrogeologic assessment along with a determination of the dewatering requirements of the mine and surrounding areas may be used to create a mine dewatering plan.

Dewatering techniques - SlideShare

20-12-2016· The method is also used on mine sites – ‘mine dewatering’ • The process of dewatering can be defined as – pumping from wells or sumps to temporarily lower groundwater levels, to allow excavations to be made in dry and stable conditions below natural groundwater level

Konkola Mine Dewatering Study - IMWA

Straskraba, Sharma & Naish -Konkola Mine Dewatering Study class A pan, which corresponds to about 1240 mm per year evaporation from a free water surface. Total evapotranspiration in the general area was estimated by various authors as 50

DEWATERING CONTROL OF GROUNDWATER - PE Civil Exam

DEWATERING – CONTROL OF GROUNDWATER Construction of buildings, powerhouses, dams, ... limiting depth to which this method is employed is about 8 m. Because wells are prebored, this method is used when hard or variable soil conditions preclude the use of a wellpoint system.

(PDF) KAJIAN TEKNIS PENIRISAN TAMBANG NIKEL LATERIT ...

Metode yang dipakai yaitu mine dewatering system. Pengamatan di lapangan terlihat adanya catchment area yang luas dan berada di sekitar pit penambangan dengan luasan 37,6Ha.

Kajian Teknis Penirisan Tambang Nikel Laterit …

Metode yang dipakai yaitu mine dewatering system. Pengamatan di lapangan terlihat adanya catchment area yang luas dan berada di sekitar pit penambangan dengan luasan 37,6Ha. Curah hujan rata-rata maksimum pada lokasi penelitian yaitu 23,82 mm/hari.

PENULISAN ILMIAH PERENCANAAN METODE DEWATERING …

Metode dewatering predrainage dapat dilakukan dengan dua metode yakni metode pompa dalam dan metode well points. Metode pompa dalam atau deep well adalah metode pengeringan dengan memanfaatkan gaya gravitasi. Alat yang digunakan pada metode ini adalah pompa submersible yang bisa diletakkan di dalam air.

Mine Dewatering System And Method - SCHLUMBERGER ...

The mine dewatering system according to any one of claims 10 to 15, wherein said well further comprises: a well casing and one or more slotted screens. 17. A method of dewatering a mine comprising the steps of: conducting a hydrogeologic assessment of a formation adjacent to said mine; determining the optimal positioning for one or more wells ...

Mine dewatering - QueensMineDesignWiki

The primary objective of mine dewatering is to allow safe and efficient mining to be done Dewatering may impact the groundwater table which is shared with the local communities and environment. This article outlines the important parameters to consider when designing an efficient underground mine dewatering system.

Mine Dewatering - Waterloo Hydrogeologic

Mine Dewatering. Open pits are developed in the mining industry for the extraction of minerals, raw materials, and aggregate. In many circumstances, these pits are excavated below the water table. Depending on the geologic environment and proximity of streams, rivers, ponds and lakes, significant groundwater inflows may occur.

Dewatering techniques - SlideShare

20-12-2016· The method is also used on mine sites – ‘mine dewatering’ • The process of dewatering can be defined as – pumping from wells or sumps to temporarily lower groundwater levels, to allow excavations to be made in dry and stable conditions below natural groundwater level

Dewatering: Important, Methods of Dewatering in …

Methods of dewatering: Ditches and Sumps:. This is a simple method, which is adopted on a large scale if the soil is shallow, coarse-grained. Deep Well System:. This method is adopted when the depth of excavation exceeds 16 m below the water table. In this... Vacuum dewatering system:. A well point ...

Major Dewatering Techniques | PRD Rigs

20-02-2020· Dewatering could turn out to be a herculean task if one doesn’t adopt the right method. Principal Dewatering Techniques: While choosing a dewatering technique impact on groundwater should be kept in mind. The use of the right technique is important in every construction project. There are four principal dewatering pumping techniques.

Mine Dewatering and Water Management at Barrick Goldstrike ...

Mine Dewatering and Water Management at Barrick Goldstrike Mine in the Carlin Trend, Nevada Johnny Zhan, Ph.D. Presented at U.S. EPA Hardrock Mining Conference 2012 Denver, CO, USA, April 3-5, 2012. 1. Introduction to Barrick and Goldstrike 2. Goldstrike Dewatering System 3.

SLUDGE DEWATERING - SNF

2 Dewatering aids 7 TERING Sludge is generally conditioned before thickening and dewatering. Two types of conditioning chemicals are used to enhance the treatability of the sludge: Mineral chemicals such as iron salts and lime. These chemicals are frequently found in filter press applications. Organic chemicals such as coagulants and flocculants.

Kajian Teknis Penirisan Tambang Nikel Laterit …

Metode yang dipakai yaitu mine dewatering system. Pengamatan di lapangan terlihat adanya catchment area yang luas dan berada di sekitar pit penambangan dengan luasan 37,6Ha. Curah hujan rata-rata maksimum pada lokasi penelitian yaitu 23,82 mm/hari.

PENULISAN ILMIAH PERENCANAAN METODE DEWATERING …

Metode dewatering predrainage dapat dilakukan dengan dua metode yakni metode pompa dalam dan metode well points. Metode pompa dalam atau deep well adalah metode pengeringan dengan memanfaatkan gaya gravitasi. Alat yang digunakan pada metode ini adalah pompa submersible yang bisa diletakkan di dalam air.