Open AccessNumerical simulation of interaction of methane filtration and rock massif deformation during mining of methane-bearing seams
Author(s) -
V. N. Fryanov,
Л. Д. Павлова,
Olga A. Petrova,
S.N. Shiryaev
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 - 10.1088/1755-1315/377/1/012036
Subject(s) - massif , methane , geology , coal mining , rock mass classification , geotechnical engineering , deformation (meteorology) , bearing (navigation) , coal , computer simulation , filtration (mathematics) , residual , mining engineering , petroleum engineering , mechanics , engineering , mathematics , ecology , oceanography , physics , statistics , cartography , geochemistry , algorithm , geography , biology , waste management
This paper presents the results of the first stage of theoretical research and mathematical modeling of interaction of geomechanical and filtration processes in methane-bearing coal-seams when mining them in gravitational and non-uniform geotectonic stress fields. Comprehensive studies were carried out on the basis of numerical modeling of geomechanical and gas-dynamic processes with adjustment of the input parameters of the mathematical model based on the results of mine measurements. According to the results of numerical modeling, the features of the residual strength distribution of the coal seam to the original one, displacements, vertical and horizontal stresses, methane pressure in the rock mass at different coefficients of lateral pressure in the undisturbed geomassif and in the zone of influence of the gob are revealed. It also presents the results of computational experiments for determining the geomechanical and gas filtration parameters in the rock massif with different options of the boundary conditions and the spatial position of the workings.