Open AccessStudy on Distribution Law of Spontaneous Combustion “Three Zones” in Goaf of Fully Mechanized Mining Face with Large Mining Height
Author(s) -
Chengyu Li,
Lili Zhang
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/358/3/032041
Subject(s) - spontaneous combustion , coal mining , distribution law , coal , mining engineering , combustion , face (sociological concept) , environmental science , law , petroleum engineering , geology , geotechnical engineering , engineering , waste management , chemistry , social science , organic chemistry , sociology , political science
In order to explore the large mining height are broken coal seam fully mechanized working face goaf spontaneous combustion “three zones” under the different height of distribution, through the establishment of numerical model, builds the working face goaf spontaneous combustion “three zones” three-dimensional sampling analysis system, through the analysis of oxygen, carbon monoxide, carbon dioxide and other coal spontaneous combustion index gases change law of goaf spontaneous combustion dangerous area under different heights for the division, the goaf three-dimensional spontaneous combustion dangerous area is determined. The results show that the “spontaneous combustion zone” of goaf in fully mechanized coal face of large mining height gradually widens along the vertical height, and the spontaneous combustion risk area becomes larger.