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Thursday, February 13, 2020 | History

3 edition of Analysis of bulk flow of materials under gravity caving process found in the catalog.

Analysis of bulk flow of materials under gravity caving process

Li I. Yenge

Analysis of bulk flow of materials under gravity caving process

  • 133 Want to read
  • 5 Currently reading

Published by Colorado School of Mines in Golden, CO .
Written in English

    Subjects:
  • Caving mining.,
  • Bulk solids flow.

  • Edition Notes

    Bibliography: v. 1, p. 41-45; v. 2, p. 63-67.

    StatementLi I. Yenge.
    SeriesColorado School of Mines quarterly ;, v. 75, no. 4, v. 76, no. 3, Colorado School of Mines quarterly ;, v. 75, no. 4, etc.
    Classifications
    LC ClassificationsTN210 .C68 vol. 75, no. 4, etc., TN287 .C68 vol. 75, no. 4, etc.
    The Physical Object
    Pagination2 v. :
    ID Numbers
    Open LibraryOL4254813M
    LC Control Number81000129

    Modify access date. The SSDetect "directly measures" the saturated surface dry condition of the fine aggregate, which is done by way of an infrared light source "tuned" to water. At the moment, fragmentation of the SLC rings is evaluated usinga quick rating system and a 2D fragment delineation software. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. The dominant concrete products and the end-use categories in the United States are identified. Five lifecycle stages are covered: i extraction of raw materials, ii cement manufacturing, iii production, iv use and v waste management of concrete.

    This thesis argues that the lack of informational linkages is driving the individual approaches of the construction industry, policy makers, environmental agencies and waste management industry, which results in the current segregated and government-subsidized material management. Innovative Machine Vision. Two untapped material management opportunities are identified: minimizing water consumption during the extraction stage and the off-site production stage. In these experiments, sandy gravity flows were generated when well-mixed slurries of sand, clay, and water were released into a tank filled with tap water and allowed to flow under gravity over a slope that declined from 4.

    The test is very easy to run and can be reliably run in the field. Access options Instant access to the full article PDF. The SSDetect "directly measures" the saturated surface dry condition of the fine aggregate, which is done by way of an infrared light source "tuned" to water. Modify access date. The results enable a descriptionof fragmentation and its variation during mucking but also — combined with the gravity flowmeasurements — conclusions on the fragmentation for different parts of the SLC ring. Innovative Machine Vision.


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Analysis of bulk flow of materials under gravity caving process by Li I. Yenge Download PDF Ebook

Products Menu. To assess Analysis of bulk flow of materials under gravity caving process book present-day functionality of large-scale SLC, a multiyear, comprehensivemeasurement program was initiated.

Includes rubber gasket that fits on jar mouth to prevent fine particles from becoming deposited in the threads. The test is very easy to run and can be reliably run in the field. At the moment, fragmentation of the SLC rings is evaluated usinga quick rating system and a 2D fragment delineation software.

The recent findingsallow a better understanding of breakage and flow and support future process improvements. The fundamental and specificproblems are discussed herein.

The test bowl is then removed and weighed, the net weight of the material is the weight at SSD. Both gravity flow and any downstreamprocesses are affected. Fewer flow disturbances are expected by mitigating oversize.

The process involves two samples of a desired material, dried to a constant mass. This possibility is explored here by examining the flow mechanics of sand-rich subaqueous gravity flows by means of laboratory experiments.

The present paper focuses on fragmentation measurements. Combining values from the two systems may result in non-conformance with the standard. By similitude material testing, the paper analyzed the forms of granular motion during the extraction process, studies the impacts of parameters including model thickness and wall roughness on the form and size of the extraction zone.

Application of distorted geometric scaling suggests that many aspects of these experiments appropriately scale up to the field scale of natural submarine debris flows. Inaddition, it requires less boulder handling and reduces wear and possible hang-up problems inorepasses.

Strongly coherent debris flows commonly hydroplaned and generated only minor subsidiary turbidity currents. More D Gravity flow of broken rock muck in dipping narrow veins is complex.

A study of gravity flow principles of sublevel caving method in dipping narrow veins

This test lets the contractor check specific gravities on the material he is currently using, not lab tests, which may not be current. Also, the greater the distance from the hangingwall of the model and the smoother the wall roughness, the easier the granular ore flows and the greater the volume of the extraction zone.

Please read AddThis Privacy for more information. Citation This page can be cited as Engineering ToolBox, ABSTRACT: The Endeavour 26 (E26) orebody at the Northparkes Mine, New South Wales, Australia is being mined by block caving.

In the initial stage of caving, Analysis of bulk flow of materials under gravity caving process book propagation of the cave excavation was due to a caving mechanism that was a combination of two modes of rock mass failure, one of which has a distinct seismic galisend.com by: Comparison of Design and Analysis of Concrete Gravity Dam Figure 1.

Typical section of a high concrete gravity dam. is shown in Figure 1. The upstream face may be kept throughout vertical or partly slanting for some of its length.

A drainage gallery is generally provided in order to relieve the uplift pressure exerted by the seeping water. Analysis of rock fragmentation and its effect on gravity flow at the Kiruna sublevel caving mine.

Wimmer, Matthias. Nordqvist, Anders. The recent findingsallow a better understanding of breakage and flow and support future process improvements. Place, publisher, year, edition, pages Cited by: 3.Marr, JD, Pdf, G & Parker, G' Experiments on subaqueous sandy gravity flows: The role of clay and water content in flow dynamics and depositional structures ', Bulletin of the Geological Society of America, vol.no.

11, pp. Cited by: TECHNICAL REPORT ON THE WAFI-GOLPU PROPERTY IN MOROBE PROVINCE PAPUA NEW GUINEA Prepared in accordance with the requirements of National Instrument Oct 25, ebook The ebook and dilution of ore by sublevel caving mining method is influenced by gravity flow principles of caved granular materials (rocks).

Gravity flow of broken rock (muck) in dipping narrow veins is complex. By combined use of dimensional analysis and similitude studies in physical modelling coupled with numerical simulation, this paper reports results of a study of gravity flow of muck in Cited by: 3.