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In this article we will discuss about the types of drilling methods used in mining. The types are: 1. Percussive Drilling 2. Rotary Drilling. Method # 1. Percussive Drilling: In this method which is the oldest one of drilling, the hole is drilled by striking a number at short in intervals on the rock by a chisel-type tool and between the blows ...
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The invention relates to the technical field of coal mining, in particular to a method and device for optimizing a mining stopping line position with hydrofracture pressure relieving. The method for optimizing the mining stopping line position with hydrofracture pressure relieving comprises the following steps that the geological state of a working face is …
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Traditional association rule mining method has the high redundancy of computation. Therefore, this paper proposes a kind of association rule algorithm of minimum single constraint based on post-processing closure operator. Firstly, it proposes association rule mining method of equivalence relation set based on closure operator constraint rule.
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Nov 29, 2019· The model mining method of conventional cooperative behavior can analyze the data mining of conventional cooperative behavior. But when we analyze the collaborative behavior of knowledge agents in specific innovation ecosystem, because of the limitations of the collaborative behavior model data handler, there is a shortage of low hit …
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Apr 28, 2019· Four main methods of mining are available: underground, open surface (pit), placer and in-situ mining. Underground mines are more expensive and often used to reach deposits that are deeper. Surface mines are usually used for deposits that are shallower and less valuable. Placer mining is used in river channels, beach sands, or …
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Sep 15, 2021· Monitoring and predicting mining area subsidence caused by coal mining help effectively control geological disasters. Information regarding small surface deformations can be obtained using a differential interferometric synthetic aperture radar (D-InSAR), which exhibits high monitoring accuracy and can cover large areas; thus, D …
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Mining Methods. There are four key stages of work involved in mining for minerals. These include: 3415, 3416. Prospecting – The purpose of this stage is to identify areas that are …
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The present invention is directed to a mining method for steeply dipping orebodies. In the method, an excavator 152 is tethered to a deployment system 120 by one or more cables/umbilicals 144 . The excavator 152 excavates slices 172 a - h of the orebody 100 by moving generally up-dip, down-dip or a combination thereof. The excavator can be …
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Oct 08, 2021· Subsurface mining is a process that involves the extraction of a metal or fossil fuel from the ground. It is the best and most well-known mining method. The subsurface mining process is helpful in the process of mining for gold, silver, lead, and even gems. Besides this, it is very much beneficial in the mining of coal, salt, and oil sands.
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Answers. Methods of Mining. 1. Open Cast Mining. -Method of extracting minerals which are near the earth's surface. Types. a) Stripping. -Stripping off of the unwanted material lying on top of the mineral deposit and then digging to remove the mineral bearing rock if it's soft or if it's hard explosives may be used to loosen it and then ...
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