coal mining high pressure water

Stone Crushing Plant

For each project scheme design, we will use professional knowledge to help you, carefully listen to your demands, respect your opinions, and use our professional teams and exert our greatest efforts to create a more suitable project scheme for you and realize the project investment value and profit more quickly.

Cone crusher

Cone crusher is widely used in metallurgical industry, building materials industry...

Impact crusher

Counter-break is broken equipment in the crushing equipment, its crushing function...

Jaw crusher

Jaw stone crusher is actually we often say jaw crusher, is the current mining industry...

Mobile crusher

Mobile crusher, also known as mobile crusher, is a type of crushing equipment...

Sand making machine

Sand making equipment is made of sand equipment, and crushing equipment compared...

Sand Washing Machine

Sand washing machine, also known as sand washing machine, sand washing equipment...

Vibrating Screens

Prater has developed vibrating screens to handle everything from aluminum slurry...

Raymond Mill

Currently on the market more advanced and widely used milling equipment was...

Vertical mill

Vertical mill is an ideal large-scale grinding equipment, widely used in cement...

Coal Mining - an overview | ScienceDirect Topics

Coal mining under conditions of sufficiently high pore gas pressure can produce the hazard of dynamic failure of coal known as coal and gas outbursts. During an outburst, coal fragmentation occurs and the fragmented coal is projected into the mine opening, accompanied by a rapid release of gas.

Get Price

10003659 - Centers for Disease Control and Prevention

Conventional hydraulic mining has shown the ability to mine coal at a rate in excess of 3 000 tons/shift, but is limited in application to seams within favourable geology and, for higher production rates, steeper inclinations. ... The application of high pressure water jets to longwall mining. Authors ... The Centers for Disease Control and ...

Get Price

Coal | National Geographic Society

Coal mining can impact local water supplies in several ways. Streams may be blocked, increasing the chances for flooding. Toxins often leach into groundwater, streams, and aquifers. Coal is one of the most controversial energy sources in the world. The advantages of coal mining …

Get Price

Coal Mining - an overview | ScienceDirect Topics

Coal mining under conditions of sufficiently high pore gas pressure can produce the hazard of dynamic failure of coal known as coal and gas outbursts. During an outburst, coal fragmentation occurs and the fragmented coal is projected into the mine opening, accompanied by a rapid release of gas.

Get Price

Hydraulic Cannon / Monitors, High Pressure Water …

2020-5-11 · The exclusive design of DOVE Hydraulic Cannons / Monitors allows the monitor, regardless its size, water volume or pressure to be easily moved, both horizontally and vertically, what results in less strain on the drive components. The unique design allows maintaining the position that has been aimed. Literally hundreds of horsepower of water pumping capacity can be handled by a touch of the ...

Get Price

Mining – Hauhinco Maschinenfabrik

Hauhinco is a successful, medium-sized family business with a long tradition. Today the company is a leading provider in the area of water hydraulic applications. Our high pressure plunger pumps, valves and systems are used in underground in underground mining and industry all over the world. Our employees are the key to success.

Get Price

Design and experimentation of high-pressure water jet set ...

In allusion to the problems of the low gas-penetration and low ratio of gas drainage during draining gas and prevention outburst,it is designed the high-pressure water jet installation of cutting coal which is installed in the draining bore,and tested the nozzle and the ...

Get Price

Hydraulic mining - Wikipedia

2020-5-15 · Hydraulic mining is a form of mining that uses high-pressure jets of water to dislodge rock material or move sediment. In the placer mining of gold or tin, the resulting water-sediment slurry is directed through sluice boxes to remove the gold. It is also used in mining kaolin and coal.. Hydraulic mining developed from ancient Roman techniques that used water to excavate soft underground …

Get Price

Coal Mine Water Pump Suppliers, all Quality Coal …

Coal Mine Water Pump, Coal Mine Water Pump Suppliers Directory - Find variety Coal Mine Water Pump Suppliers, Manufacturers, Companies from around the World at water pump,solar water pump,gmb water pump, Pumps

Get Price

,coal seam water injection with high pressure ...

2018-10-1 · But coal seam water infusion is a non-linear problem with extremely complexity,and it can hardly be solved by traditional mathematical methods because it is influenced by many factors.,,。

Get Price

Water jet cutter - Wikipedia

2020-5-1 · A water jet cutter, also known as a water jet or waterjet, is an industrial tool capable of cutting a wide variety of materials using a very high-pressure jet of water, or a mixture of water and an abrasive substance. The term abrasive jet refers specifically to the use of a mixture of water and abrasive to cut hard materials such as metal or granite, while the terms pure waterjet and water ...

Get Price

coal mining high pressure water - roescherhoreca.nl

Underground coal mining - wassara.com. Aug 30, 2018· Hydraulic mining, California, 1870s.This photo shows hydraulic mining activity at the Malakoff Diggings in the foothills of the Sierra Nevada in the 1870s.Hydraulic mining was a variation on ground sluicing where the water delivered to the site would be shot through a nozzle at high pressure onto the face of the cliff, thereby washing away ...

Get Price

coal mining under pressure --cnki

Safety Prediction of Coal Mining under Pressure Study of Coal Carbonization Under Pressure Practice of mining coal under railway Study on Mining Bore Pressure under the Water Seam in Tunlan Coal Mine ...

Get Price

coal mining high pressure water - …

E21C 45 - Methods of hydraulic mining; Hydraulic monitors - Patents ... 09/18/2014, WO2014139339A1 High-pressure water jet assisted cutting ... CN103029174A Control system for coal mine underground water-jet cutting machine.

Get Price

Design and Numerical Modeling Analysis of Water-retaining ...

Cite this article: LIU Huan,ZHU Bo-lin,YUAN Zhen. Design and Numerical Modeling Analysis of Water-retaining Wall for High Water Pressure Mine[J]. Safety in Coal Mines, 2013, 44(7): 162-165. URL:

Get Price

Study on Coal Mining Technology of Static High …

Coal and gas bursting is an important factor of causing coal mine safety accident, it may cause major accident, even effect on the safety of human life. Human disturbance is an important factor of causing coal and gas outburst. In this paper under the enlightenment of the water injection dustproof, the coal technology of static high pressure water expanding were researched and developed.

Get Price

High pressure water jet mining machine(Patent) | DOE …

2020-4-8 · A high pressure water jet mining machine for the longwall mining of coal is described. The machine is generally in the shape of a plowshare and is advanced in the direction in which the coal is cut. The machine has mounted thereon a plurality of nozzle modules each containing a high pressure water ...

Get Price

High pressure water jet cutting of rock

2020-4-9 · hydrocarbon "Gilsonite" at Bonanza, Utah, by hydraulic mining. Water jet mining was used because Gilsonite is highly explosive in dust form and the naturally occurring spray from the water jets virtually eliminated the dust (5). In 1959, the U.S. Bureau of Mines began to investigate the use of water jets in coal mines.

Get Price

Water jet cutter - Wikipedia

2020-5-1 · A water jet cutter, also known as a water jet or waterjet, is an industrial tool capable of cutting a wide variety of materials using a very high-pressure jet of water, or a mixture of water and an abrasive substance. The term abrasive jet refers specifically to the use of a mixture of water and abrasive to cut hard materials such as metal or granite, while the terms pure waterjet and water ...

Get Price

Coal mining - Underground mining | Britannica

Coal mining - Coal mining - Underground mining: In underground coal mining, the working environment is completely enclosed by the geologic medium, which consists of the coal seam and the overlying and underlying strata. Access to the coal seam is gained by suitable openings from the surface, and a network of roadways driven in the seam then facilitates the installation of service facilities ...

Get Price

Contact Us