| In recent years, with the increase of the coal mining depth, intensity, rate and the exploitation scale, coal mining is under the serious threat of groundwater. Discriminating the source of water-inrush exactly and quickly is the basis of taking countermeasures for water-inrush control, and also is a key technology to ensure the mine safety production.Based on the technology of ArcSDE and Microsoft SQL Server, this paper designed and established a comprehensive information spatial database for discrimination of water-inrush source; spatial data mining technology was introduced and then applied it to the analysis of mine groundwater, and based on Voronoi diagram method and DEM method mined the distribution rules of the hydrochemical types and the spatial association rule of groundwater chemistry and structure; the common models in water-inrush source discrimination was studied, and the fuzzy discrimination model based on F-value weighting was focused on, then a identification method of mine water-inrush source with water temperature based on GIS was proposed, and based on these, discrimination model of mine water-inrush source with comprehensive information which is an integration of water level, water chemistry and water temperature was established; a GIS-based discrimination system of mine water-inrush source with comprehensive information was developed.The main conclusions and results of this paper are as follows: a simple and practical flow system which can identify mine water-inrush source with comprehensive information was established; a comprehensive information spatial database for discrimination of water-inrush source was constituted; the distribution rules of the coal measure aquifer water in Panyi were found, such as the main water-type is Cl-K+Na in Panji anticlinal trend belt area in the north of Panyi, a concentrative region of south in the researh area is HCO3-K+Na, and other areas are HCO3-Cl-K+Na, the Cenozoic bottom aquifer water is single type of Cl-Na+K; rules such as the HCO3- values of samples in coal measure water which are close to Panji anticline are low were obtained; in Panyi mine, the discrimination accuracy rates of Bayes, neural network, analysis of gray related degree; method and fuzzy comprehensive evaluation method with F-value weighting are 87.23%, 87.23%, 80.43% and 93.48%. The results of comprehensive information discrimination show that water temperature discrimination has played a supplementary role to the water quality discrimination, and the model have good effects. The system developed based on GIS realize the management for a variety of related data and attribute data, the discrimination of mine water-inrush source, the three-dimensional visualization of spatial data, and also other functions. It has better actual application value.The innovations of this article are as follows:(1)Spatial data mining technology was applied to analyze the groundwater of mine, and based on Voronoi diagram method and DEM the distribution rules of the chemical types of groundwater were mined;(2)A identification method of mine water-inrush source with water temperature based on GIS was proposed and discrimination model of mine water-inrush source with comprehensive information which integrated water level, water chemical and water temperature was established;(3)A simple, rapid and practical GIS-based system for mine water-inrush source discrimination with comprehensive information was developed. |
PDF Full Text Request