borehole mining techniques

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US8899691B2 - Methods for constructing underground ,

Disclosed are methods for solution mining of evaporite minerals, such as trona, comprising drilling an access well and at least two lateral boreholes; injecting a fluid; circulating the fluid through the lateral boreholes with a controlled fluid flow; and collecting a pregnant solution Also disclosed are methods of solution mining that include injecting an aqueous solution into an underground ....

Borehole - Wikipedia

A borehole is a narrow shaft bored in the ground, either vertically or horizontally A borehole may be constructed for many different purposes, including the extraction of water, other liquids (such as petroleum) or gases (such as natural gas), as part of a geotechnical investigation, environmental site assessment, mineral exploration, temperature measurement, as a pilot hole for installing ....

Rock mass characterization using geophysical methods ,

Although exact implementation depends on the specific instrument being used and manufacturer guidelines should be followed, the following should be considered when implementing borehole techniques: Borehole Diameter Mining typically utilizes “slim-hole” borehole instruments These range in size from approximately 40 to 60 mm diameter...

WALL CONTROL BLASTING TECHNIQUES by Partha D Sharma - ,

Feb 25, 2011· WALL CONTROL BLASTING TECHNIQUES -----mining, generally being most successful if the ground is reasonably competent thereby avoiding damage at the bottom of the hole and excessive leakage of gases ....

Drilling Techniques | Brewster Well Drilling

Drilling Techniques for Mining Exploration The early stages of your mining project need to be efficient, cost-effective and completed by an experienced mine exploration drilling company in Canada Turn to Brewster Well Drilling for the latest technology and guidance during project planning, and skilled hands to ensure your samples meet your needs...

MODERN TRENDS IN MINING GEOPHYSICS AND NUCLEAR ,

11 MODERN TRENDS IN MINING GEOPHYSICS AND NUCLEAR BOREHOLE LOGGING METHODS FOR MINERAL EXPLORATION Jan A Czubek Institute of Nuclear Physics, Krakow, Poland Czubek, Jan A, Modern Trends in Mining Geophysics and Nuclear Borehole Logging Methods for Mineral Exploration; in Geophysics and Geochemistry in the Search for Metallic...

Geophysical Survey Methods in Diamond Exploration ,

Geophysical methods are particularly useful in diamond exploration They tend to work well because kimberlite pipes, the diamond hosting rock, generally have properties that are different from the surrounding rock In addition, the data provide most of the guidance on where to position drillholes ....

GEOPHYSICAL METHODS IN EXPLORATION AND MINERAL ,

Various geophysical methods are identified in table 1 (adapted from a chart compiled by Companie General de Geophysique, Massy, France and published with modification by Van Blaricom, 1980) The table identifies the utility of each method in airborne, ground, or borehole applications Borehole methods are a specialized branch of...

Borehole Surveying instruments and information GeoMEM Ltd ,

GeoMEM Solutions: Borehole Surveying Background A borehole is surveyed to obtain a 3D “locational” path of the borehole so that all other information obtained for the borehole (lithology, structure, geophysics, mineralisation, end point) can be accurately located and therefore provide the best information for later critical processes (such ....

Gamma logging techniques for Uranium - Borehole Wireline

May 01, 2015· Gamma logging techniques for Uranium May 1, 2015 By Duncan Cogswell Leave a Comment Gamma logging for uranium exploration and mining is an established technique for producing a rapid and cost effective depth based profile in a borehole of uranium ore grade...

WELLOG

WELLOG DEVIATION SURVEY WELL DEVIATION: During the course of drilling a well, the direction of the drill may change The causes vary, however, the effect of changing formation hardness and drilling technique are some of the major factors Borehole deviation is ,...

ctufrgsbr

Underground Mining Methods and Applications Production Headframe Hans Hamrin* 11 INTRODUCTION Ore is an economic concept It is defined as a concentration of minerals that can be exploited and turned into a saleable product to generate a financially acceptable profit under existing economic conditions The definition of ore calls for ....

Hydraulic Borehole Mining - Home - Kinley Exploration

Kinley Exploration is a world leader in Hydraulic Borehole Mining strategy, equipment design, engineering and operations With over 30 years in applied engineered drilling solutions, the Kinley team has pioneered the new age of Hydraulic Borehole Mining techniques and equipment with applied modern engineering strategies and principals...

API | Advanced Drilling Techniques

Advanced Drilling Techniques Horizontal Drilling Horizontal drilling starts with a vertical well that turns horizontal within the reservoir rock in order to expose more open hole to the oil These horizontal "legs" can be over a mile long; the longer the exposure length, the more oil and natural gas is drained and the faster it can flow...

Shaft Mining, Mining Techniques, Underground Mining ,

This is called borehole shafts Raise boring is a method by which small shafts are taken out of an existing mine as long as there is access at the bottom Shaft sinking is one of the dangerous forms of mining and involves a lot of risk This method is now mainly carried out in Canada and South Africa...

US8899691B2 - Methods for constructing underground ,

Disclosed are methods for solution mining of evaporite minerals, such as trona, comprising drilling an access well and at least two lateral boreholes; injecting a fluid; circulating the fluid through the lateral boreholes with a controlled fluid flow; and collecting a pregnant solution Also disclosed are methods of solution mining that include injecting an aqueous solution into an underground ....

Robertson GeoConsultants Inc Consulting Engineers and ,

Various well drilling methods have been developed because geologic conditions range from hard rock to completely unconsolidated material such as alluvial sand and gravel Particular drilling methods are employed more frequently in certain areas because they are more effective in penetrating the local aquifers and thus offer cost advantag...

API | Advanced Drilling Techniques

Advanced Drilling Techniques Horizontal Drilling Horizontal drilling starts with a vertical well that turns horizontal within the reservoir rock in order to expose more open hole to the oil These horizontal "legs" can be over a mile long; the longer the exposure length, the more oil and natural gas is drained and the faster it can flow...

ELECTRICAL WELL LOGGING TECHNIQUES FOR GROUND ,

geophysical methods -second stage is drilling & last stage is development of well In some sedimentary coastal region & saline water infested area, the saline water mixes with fresh water & the well become useless Such undesirable zone has to be sealed by constructing the well through well assembly consisting of plain & slotted pip...

INTRODUCTION TO MINING - Ciência Viva

INTRODUCTION TO MINING 11 MINING’S CONTRIBUTION TO CIVILIZATION Mining may well have been the second of humankind’s earliest endeavors— granted that agriculture was the first The two industries ranked together as the primary or basic industries of early civilization Little has changed in the...

Application of Well Logging Techniques in Metallic Mineral ,

Problems which the mining industry believes are solvable with well logging methods include bulk assay and recognition of minerals adjacent to and retired from a borehole, delineation of joint and ....

Borehole Geophysical Logging: Tools and Techniques for ,

borehole diameter enlargement Additional methods to assess fracture occurrence can therefore be useful, and the ATV and OTV logs serve this purpose very well The ATV and OTV logs are presented as vertically “unrolled” images of the borehole wall, oriented to North (0°) In this Borehole Geophysical Logging: Tools and...

Blog | Mine Dewatering - Groundwater Eng

May 22, 2014· Mine dewatering techniqu Dewatering and groundwater control is an important part of many open pit and underground min Effective dewatering is a pre-requisite for safe and efficient mining Poorly controlled groundwater will waste money, slow down mining and potentially cause adverse environmental impacts However, techniques are available to successful control groundwater...

Borehole Mining of Manganese in Emily MN - MGWA

Overview of the ProjectOverview of the Project ¾Collect a “bulk sampp( y )le” (>12,000 cubic yards) of manganesemanganese--rich iron formation from 1 boreholerich iron formation from 1 borehole ¾Evaluate borehole mining technology zUses highUses high-pressure water jet to minepressure water jet to mine in situin situ zOreOre--water slurry is pumped out, filtered and rewater slurry is ....

Borehole mining - Revolvy

Aug 22, 2010· Borehole Mining (BHM) is a remote operated method of extracting ( mining ) mineral resources through boreholes by means of high pressure water jets This process can be carried-out from land surface, open pit floor, underground mine or floating platform or vessel through pre-drilled borehol The process A borehole is drilled from land surface to a desired depth, where then actual borehole ....

Methods for constructing underground borehole ,

Aug 17, 2005· The present invention is directed to methods of constructing underground borehole configurations and to related methods of solution mining and production of commercial products Underground borehole configurations include configurations for water wells and storage facilities for solids, liquids and/or gas...

Measurement of blast damage - Office of Surface Mining

age by the mining industry raises the issue of its effective measurement by simple, reliable and robust techniqu Visual inspection and traditional-measurement param­ eters are not well documented, and inconsistencies in the application and interpretation of data have been ob­ served Holmberg and Persson (1980) presented a damage...

Borehole mining

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Well logging | mining | Britannica

Well logging: Well logging, field technique used in mineral exploration to analyze the geologic formations penetrated by a drill hole If the hole has been drilled by using coring techniques, the core provides a visual record of the formations and rock types encountered The description (log) of the core...

Excavation Methods - Vertical Shafts | Introduction ,

Excavation Methods Vertical Shafts There are 4 methods in general use: Conventional drill, blast & remove stone ("muck out") to surface with a winderIf the shaft is to be "lined" (ie sides to be covered with a concrete or even a steel lining), this is normally placed as the shaft is excavated...