Open AccessResearch on sensitive index and critical value of local prediction for coal roadway insteep seam
Author(s) -
Zhonghua Wang,
Luanluan Sun
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/565/1/012094
Subject(s) - coal , coal mining , drill cuttings , mining engineering , index (typography) , drill , volume (thermodynamics) , petroleum engineering , drill hole , cutting , environmental science , geology , drilling , engineering , waste management , computer science , mechanical engineering , physics , thermodynamics , world wide web , drilling fluid , botany , biology
In response to the prediction of the local outburst danger of steeply inclined coal seams, it tested the initial gas emission rate of coal ΔP, the firmness coefficient f of coal, and the gas desorption characteristics K 1 -P in laboratory. Using the methods of historical data analysis, on-site inspection and on-site expansion verification, it was determined that the drill cuttings volume index S and drill cuttings gas desorption index Δh 2 are the sensitive indexes and critical values for the coal roadway prediction in Qingshan Coal Mine. The application effect is good, which provides reference for mines with similar conditions.