Soviet Mining

, Volume 19, Issue 1, pp 71–75 | Cite as

Patterns and laws of dilution and outflow of gaseous products from slot chambers

  • G. V. Kalabin
Mine Aerodynamics
  • 14 Downloads

Conclusions

  1. 1.

    Ventilation of flat chambers occurs—simultaneously—through dilution of gaseous products, and their transport in a concentrated form, and is generally characterized objectively by the output parameter c=f(τ) in a “black box” description.

     
  2. 2.

    The efficacy of ventilation of flat chambers depends on the relationship between the primary outflow of impurity in a concentrated form and the subsequent dilution and outflow of residual impurities; it is decreased with decreasing degree of cross-sectional constraint of the jet.

     
  3. 3.

    A decrease of the cross-sectional constraint of the jet from 1 to 0.2 is accompanied by a regular transition of the curves describing the reduction of toxic impurity concentration as a function of time from a unimodal to bi- or trimodal pattern.

     

Keywords

Residual Impurity Hydraulic Model Electrode Sensor Regular Transition Rare Metal Deposit 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature Cited

  1. 1.
    I. I. Medvedev, Ventilation of Potassium Mines [in Russian], Nedra, Moscow (1970).Google Scholar
  2. 2.
    G. A. Radchenko, Dust-Removing Ventilation of Underground Workings [in Russian], Nauka, Alma-Ata (1970).Google Scholar
  3. 3.
    I. G. Gurshev, Turbulent Jet in a Constrained Volume [in Russian], Kaz. SSR, Inst. of Mining, Alma-Ata (1974). (Deposited with VINITI, No. 84-75, Jan. 13, 1975).Google Scholar
  4. 4.
    Yu. N. Pervov, “Calculation of free turbulent jets propagating in constrained volumes”, in: Problems of Mine Aerology and Sudden Coal and Gas Bursts [in Russian], Izd. Akad. Nauk SSSR, Moscow (1958).Google Scholar
  5. 5.
    G. V. Kalabin, “Experimental studies of the opening of constrained turbulent flows”, Fiz. -Tekh. Probl. Razrab. Polezn. Iskop., No. 5, (1981).Google Scholar
  6. 6.
    G. V. Kalabin and V. S. Romanov, “Results of experimental studies of aerodynamics of flat chambers,” in: Ventilation of Mines [in Russian], Issue 6, Leningrad (1979).Google Scholar

Copyright information

© Plenum Publishing Corporation 1983

Authors and Affiliations

  • G. V. Kalabin

There are no affiliations available

Personalised recommendations