Drilling method for mining thin ore bodies Download PDF Info Publication number US3167354A. US3167354A US219333A US21933362A US3167354A US 3167354 A US3167354 A US 3167354A US 219333 A US219333 A US 219333A US 21933362 A US21933362 A US 21933362A US 3167354 A US3167354 A US 3167354A Authority US United States Prior art keywords vein
More
Underground drilling method is a method in which a certain number of upholes are drilled in the roadway near the gob and the observation system is used to determine the leakage of drilling water and maximum height of caving zone and water flowing fracture zone. This method involves a small quantity of work and is not limited by construction conditions such as mining depth and standing water on ...
More
Apr 07, 2014 Drilling in mining 1. Introduction to Drilling Technology for Surface Mining Prof. K. Pathak Dept. of Mining Engineering, IIT, Kharagpur-721302 1 Introduction Drilling is the process of making a hole into a hard surface where the length of the hole is very large compared to the diameter.
More
The Horizontal Directional Drilling Process The tools and techniques used in the horizontal directional drilling (HDD) process are an outgrowth of the oil well drilling industry. The components of a horizontal drilling rig used for ... The most common method of controlling buoyancy is to fill the pipe with water as it
More
Mar 16, 2017 The character of the ore may make it difficult to drill, yet because of the ease with which it breaks the total cost of drilling and blasting may be low. In preparing this article the attempt has been, not to cover the whole field of mining, but to describe the different methods of stoping and mining which have distinct principles.
More
Apr 24, 2020 1. Percussion or Cable Drilling. Percussion drilling is one of the most original drilling methods used around the world. It requires the team to set up a tripod with a cable and the drill bit attached to its end. The drill goes to and fro in the hole to loosen the soil and reach a greater depth, which the workers later extract using a bailer.
More
Jul 20, 2012 Diamond Core Drilling: Theory, Mechanisms and Applications. Download PDF Copy. By G.P. Thomas Jul 20 2012. Diamond drilling has revolutionized the mining industry and directly resulted in the discovery of many minable orebodies that would otherwise have gone untapped. Before the introduction of mainstream diamond drilling, mining was still ...
More
Drilling and Blasting Method Sequences. 1- Drilling. Before the blasting takes place, the drilling rig bores the drill holes – determined in advance in a blasting plan – in the foremst front wall of the tunnel (working face). The more solid the rock, the more explosives are required. A jumbo is used to drill
More
Geological Methods in Mineral Exploration and Mining Second Editionmining-eng.ir. Irina V Apukhtina. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 30 Full PDFs related to this paper. Read Paper.
More
Mar 04, 2018 Rotary drilling is a versatile method for blast hole drilling. It is the dominant method for holes larger than 203 mm (8”) diameter. In smaller holes, it is most common in softer rock formations. The drilling principle is to use a high pull down force (weight-on-bit), rotate the drill bit, and blow the rock cuttings to the surface with ...
More
Jul 31, 2013 Drilling Methods Used in Coal Mines. Geotechnical core sample after logging. For coal deposits, like most other minerals, drilling is a key to identifying in detail the grade and size of the resource, both prior to mine development, and during operations. Mining operations employ a variety of drilling methods based on the requirements of the ...
More
Uranium mining is the process of extraction of uranium ore from the ground. The worldwide production of uranium in 2019 amounted to 53,656 tonnes. Kazakhstan, Canada, and Australia were the top three uranium producers, respectively, and together account for 68% of world production. Other countries producing more than 1,000 tonnes per year included Namibia, Niger, Russia, Uzbekistan, the United ...
More
The wireline coring system is used for mining operations in all types of soils. Discover how it works in this page Mainly used for mining operations, wireline coring allows rapid placement and withdrawal of the corebarrel within the drill rods therefore the rods do not need to be removed to recover each individual core sample.
More
Mining Method Processing Technology HME Type HME Model Crusher / Mill Type Crusher / Mill Model Job Category Job Title Contact Name Search result: 2,029 assets. ... Drill (long hole)^ Drill jumbo (single boom)^ Drill jumbo (two boom)^ Drill^ Excavator^ Excavator^ Grader^ Grader^ Load-Haul-Dump (LHD)^ Load-Haul-Dump (LHD)^
More
Jul 31, 2013 Drilling Methods Used in Coal Mines. Geotechnical core sample after logging. For coal deposits, like most other minerals, drilling is a key to identifying in detail the grade and size of the resource, both prior to mine development, and during operations. Mining operations employ a variety of drilling methods
More
Apr 01, 2021 Drilling and blasting methods in underground mining – smooth wall blasting. Drilling in underground mining is very diverse but used for two main purposes. Firstly for exploration which aims to obtain very detailed information about the formations below ground surface. Secondly for production to facilitate the labors of ore extraction.
MoreMar 16, 2017 The character of the ore may make it difficult to drill, yet because of the ease with which it breaks the total cost of drilling and blasting may be low. In preparing this article the attempt has been, not to cover the whole field of mining, but to describe the different methods of stoping and mining which have distinct principles.
More
Jan 01, 2012 Drilling and Blasting. Drilling and blasting is one of the most economical and viable methods of excavation in the field of construction and mining across the globe (Gui et al., 2018).
More
Jul 25, 2013 Diamond drilling is used for deep holes of approximately 300m or deeper. Diamond drilling is also the most expensive and slowest form of drilling. Reverse Circulation. Reverse circulation or RC for short, is the most commonly used drilling method in the minerals exploration industry, mainly because it is cost effective and fast. A drawback to ...
More
The underground mining methods we use include room and pillar, narrow vein stoping and large-scale mechanised mining. Room and pillar mining is a style of mining where tunnels are driven in a chess board pattern with massive square pillars between them
More
Nowadays, there are several methods traditionally employed in mines to produce these slot raises: long-hole rigs, manual drilling methods, and even conventional raise boring to name but a few. Naturally, the chosen method depends also on the mining method being employed. A common denominator is often the complexity of the mining
More
method for steel production on an industrial scale. 4 Sandvik Mining ROTARY DRILLING BITS AND DRILL STRING TOOLS LINKING DRILL BIT TO DRILL RIG To drill a good hole, you need the right drill rig, drill string tools, and bits for your specific application, and
MoreThe drilling of mine shafts by suitable machines is the most progressive method of shaft sinking adopted in Russia and other advanced countries of the west. The process is completely mechanised and all the sinking work can be carried out by sequence controlled automatic machines so that there is no need to keep any men at the shaft bottom.
More
The Mining Process. Finding new mineral reserves is critical to the success of our company. Locating, extracting and processing these natural resources is a multi-year process that involves complex scientific, environmental and social planning. Newmont mission is to build a sustainable mining business while leading in safety, environmental ...
More
When you need to drill high quality holes with diameters between 100-254 mm, DTH (Down The Hole) drilling is by far the best and most effective method. DTH drilling can be performed in most types of rock, hard or soft. It's a commonly used method in the mining industry (blast hole drilling), waterwell drilling, construction, and in the oil and gas industry.
More
A telescopic drilling method includes the steps of drilling an outer bore through a surface, inserting a hollow outer conduit into the outer bore, and at least partially inserting a first hollow inner conduit through the outer conduit. Next, the method includes the steps of preventing the first inner conduit from moving longitudinal with respect to the outer conduit engaging a rotatable inner ...
More
mining - mining - Blasthole stoping: When the dip of a deposit is steep (greater than about 55°), ore and waste strong, ore boundaries regular, and the deposit relatively thick, a system called blasthole stoping is used. A drift is driven along the bottom of the ore body, and this is eventually enlarged into the shape of a trough. At the end of the trough, a raise is driven to the drilling ...
MoreUranium mining is the process of extraction of uranium ore from the ground. The worldwide production of uranium in 2019 amounted to 53,656 tonnes. Kazakhstan, Canada, and Australia were the top three uranium producers, respectively, and together account for 68% of world production. Other countries producing more than 1,000 tonnes per year included Namibia, Niger, Russia, Uzbekistan, the United ...
More
1. Drilling and blasting. By far the bulk of rock excavated in mining globally is broken by drilling and blasting. Mining is the largest consumer of civil explosives. Mining explosives are substances which detonate to produce a high-intensity shock wave and large volumes of gas which, being confined in a hole, expand rapidly, entering existing ...
MoreJul 25, 2013 Diamond drilling is used for deep holes of approximately 300m or deeper. Diamond drilling is also the most expensive and slowest form of drilling. Reverse Circulation. Reverse circulation or RC for short, is the most commonly used drilling method in the minerals exploration industry, mainly because it is cost effective and fast. A drawback to ...
MoreThe underground mining methods we use include room and pillar, narrow vein stoping and large-scale mechanised mining. Room and pillar mining is a style of mining where tunnels are driven in a chess board pattern with massive square pillars between them
More
Feb 29, 2016 Sometime, mining companies during the first months of operation employ this method to study zones that were not studied well during the exploration program. Results are different. For example, by employing a core drilling program the average gold content was 5 g/t. however, the second method on the same place gave higher values, 10 g/t.
Moremethod for steel production on an industrial scale. 4 Sandvik Mining ROTARY DRILLING BITS AND DRILL STRING TOOLS LINKING DRILL BIT TO DRILL RIG To drill a good hole, you need the right drill rig, drill string tools, and bits for your specific application, and
More
Jan 12, 2021 A method of short-hole mining, cut-and-fill mining is used in irregular or steeply dipping ore zones, especially where the hanging wall limits the use of long-held methods. The ore is mined either in slightly inclined or horizontal slices then it is filled with sand, waste rock, or tailings.
More
Apr 18, 2018 The Drill Blast technique is altogether different. As we outlined in this post, it is indeed a “conventional” method of excavation, and includes the following steps: 1. Drilling. 2. Explosive charging. 3. Blasting. 4. Ventilation. 5. Mucking and scaling . 6. Support: shotcrete and bolting. But how is one to know when to employ one method ...
MoreThe drilling process completely differs from the open pit mining. The horizontal and hole track drill will produce much smaller blast holes. Explosives are sent to the hole and produce a lower volume of rock with each blast. Other equipment that are required in underground mining are powder loaders, scaling rigs and roof bolting equipment.
More
This mining method can be used at a wide range of depths. The ore bodies must be made of competent rock, and be surrounded by competent wall rock. Due to the nature of the drilling and blasting of the rock it is best if the orebody has a regular outline with well defined edges, as this lowers the amount of dilution. Since this mining method ...
MoreThe core of the research is held in Research Centre for Deep Drilling which was opened in the premises of Slovak Academy of Sciences. Only a very small number of companies have embraced this method, e.g. GA Drilling, headquartered in Bratislava, Slovakia. Advantages of Plasma deep drilling technology. Higher drilling energy efficiency
More
About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy Safety How YouTube works Test new features Press Copyright Contact us Creators ...
More
Drill core samples may be large, or a certain amount of material taken from the trench by using a bulldozer. 4. CHANNEL SAMPLING This method can be used in the sediment contained in the surface and also in an underground mine. For shallow sediments, this method is used in a test well. Groove (channel) is made on the side of the test wells.
More
Apr 27, 2016 The importance of prospecting prior to expanding a mining operation cannot be understated, and test drilling is one of those methods most commonly used for sampling. Although costs can be expensive, it takes some of the risk and guesswork out of the mining process and gives predictable estimates as to how much gold may be present in an area.
More
level stoping mining method. The average stope height is 25 meters but can be as high as 40 meters. The original long-hole open stoping method required 21 drill holes for opening a drop raise in each stope, using the same conventional long-hole rigs as that were used for drilling
More