Comprehensive Assessment Method Of Water Invasion Susceptibility From Coal Seam Floor Based On GIS Technology

Water invasion of seam floor is a primary hydrological geology and engineering geology problem for North China type coalfield, So Tidy, statistics, analyze the colliery construct and produce time's hydrological geology material, and incorporate the 3D seismic data and underground observational data, to carry out the susceptibility comprehensive assessment of water invasion from seam floor, can provide the gist for establishing homologous waterproof measure, and it is equipped with important operation significance for safe recovering the coal resource which suffer pressure water. The 10th coal seam floor Taiyuan group limestone water of Wo long-hu colliery first division are chose to be the subject investigated in this article. On the base of the reorganization, statistics, analyses to the colliery construct and produce time's hydrological geology material, and incorporate the 3D seismic data and underground observational data, the colliery's architectonic characteristic, hydro geologic condition, water abundance of the 10th seam floor for region of interest, principal faulted water abundance and transmissibility for region of interest, as well as the source of replenishment of the 10th seam floor for region of interest are analyzed, and the 10th coal seam floor's head pressure for region of interest is calculated. The 10th coal seam floor's rock engineering property and floor's destroy depth under the condition of coal seam exploitation are ascertained by adopting the numerical simulation techniques and field investigation etc instrument. The 10th coal seam floor's water invasion coefficient for region of interest is calculated by use of the modificatory water invasion coefficient computing formula. On the research of tectonic setting, floor's impermeability, hydro geologic condition, coal seam exploitation instance, the comprehensive assessment of 10th seam floor's limestone water water invasion susceptibility is carried out and differ water invasion susceptibility regional distribution is ascertained by use of the theory of fuzzy mathematics and the technology of GIS. Figure 53 table 15 reference 60...