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An Analog Device for Simulation of Hardrock Mine Ventilation.

Wright HA; Lundquist RG; Murray BS
NTIS: PB/84-185065 Available for Reference At Bureau of Mines Libraries :73 pages
The purpose of this report is to assess the feasibility of an analog "black box" approach to mine ventilation simulation in which electronic or mechanical elements are physically interconnected in order to model an underground ventilation network. The black box approach to ventilation simulation involves the use of electronic or fluid-mechanical elements that have the proper square law dependence between pressure and flow. These elements would be assembled in a configuration that represents the ventilation network. When activated, the flows or pressures can be measured. Branch resistances can be easily changed to simulate new test conditions such as a regulator readjustment or breakthrough between sections. Both the fluid-mechanical and analog electronic models can be made that have the capability to model nonlinear flow in networks such as mines. The fluid-mechanical device has a practical limitation of perhaps 25 to 30 branches and more design tailoring.
Publication Date
Document Type
CP; Final Contract Report;
Fiscal Year
NTIS Accession No.
NTIS Price
Identifying No.
OFR 98-84
NIOSH Division
Source Name
NTIS: PB/84-185065. Available for Reference At Bureau of Mines Libraries.
Performing Organization
Bolt, Beranek and Newman, Inc.
Page last reviewed: November 12, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division