Open AccessApplication of “direct method” in the evaluation of CBM resources in old goaf of Nanzhuang Coal Mine
Author(s) -
Ran Wang
Publication year - 2021
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 - 10.1088/1755-1315/632/2/022015
Subject(s) - coalbed methane , coal mining , coal , mining engineering , extraction (chemistry) , petroleum engineering , methane , environmental science , geology , waste management , engineering , chemistry , organic chemistry , chromatography
With the cessation of mining in Nanzhuang Coal mine, the amount of gas extraction decreases, and the utilization rate of coalbed methane decreased significantly. Many coalbed methane resources exist in the old goaf after years of mining, which has a very high utilization value, Therefore, it is necessary to estimate the reserves of coal-bed methane in goaf before mining. Based on the geology and production data of No.12 coal seam of Nanzhuang Coal Mine, the application of direct method in Nanzhuang coal mine is explored. The total amount of geological gas in No.12 coal seam was about 159,496,100 m 3 , among which, the total amount of free gas was about 20,637,100 m 3 .