Location
Rolla, Missouri
Session Dates
11 Jun 1999 - 17 Jun 1999
Keywords and Phrases
Risk Assessment; SPONCOM; Gob
Abstract
Expert systems for SPONCOM risk assessment ·are used for choosing suitable fire-proof mining systems and ventilation schemes. Some of them can even estimate the effectiveness of planned ventilation and specific anti-fire measures for SPONCON risk reduction as early as at the design phase. The method proposed herewith is appropriate for operative evaluation of SPONCM risk in gob areas for the following three phases during longwall development: design stope, the commencement of production, and during production. Data from mine and model experiments and statistical data for the actual coal seams serve as a basis for defining index of relative SPONCOM risk throughout gob areas. Two very important problems can be solved with this method: (1) operational - tracing of hypothetical SPONCOM zones alongside gob area when some combustive products of low oxidation are observed in the outflowing stream. Most probable SPONCOM zones are determined via streamlines of air leakage and risk distribution; (2) preventive -planning of target anti-fire measures for effective SPONCOM risk reduction in the most dangerous zones. Application of the proposed method is illustrated with real data from operating retreat longwalls. Such a system implies the greatest difficulties in tracing dangerous zones. Influence of nitrogen injection on dangerous SPONCOM zones is also shown.
Department(s)
Mining Engineering
Meeting Name
8th U.S. Mine Ventilation Symposium
Publisher
University of Missouri--Rolla
Document Version
Final Version
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Michaylov, Michael, "Method for Operative Prediction of SPONCOM Hazard in Gob Area" (1999). U.S. Mine Ventilation Symposium. 5.
https://scholarsmine.mst.edu/usmvs/8usmvs/8usmvs-theme12/5
Method for Operative Prediction of SPONCOM Hazard in Gob Area
Rolla, Missouri
Expert systems for SPONCOM risk assessment ·are used for choosing suitable fire-proof mining systems and ventilation schemes. Some of them can even estimate the effectiveness of planned ventilation and specific anti-fire measures for SPONCON risk reduction as early as at the design phase. The method proposed herewith is appropriate for operative evaluation of SPONCM risk in gob areas for the following three phases during longwall development: design stope, the commencement of production, and during production. Data from mine and model experiments and statistical data for the actual coal seams serve as a basis for defining index of relative SPONCOM risk throughout gob areas. Two very important problems can be solved with this method: (1) operational - tracing of hypothetical SPONCOM zones alongside gob area when some combustive products of low oxidation are observed in the outflowing stream. Most probable SPONCOM zones are determined via streamlines of air leakage and risk distribution; (2) preventive -planning of target anti-fire measures for effective SPONCOM risk reduction in the most dangerous zones. Application of the proposed method is illustrated with real data from operating retreat longwalls. Such a system implies the greatest difficulties in tracing dangerous zones. Influence of nitrogen injection on dangerous SPONCOM zones is also shown.
