Research On Information System Of Coal Mine Gas-geology Based On GIS

Gas disaster prevention is always the key for the coal mine. Coal mine gas geology work is an important foundation for gas disasters governance. More attentions are paid to it. Gas-geology is a comprehensive discipline and its profession uniqueness determines that there is no department to manage coal mine gas geology information at present. This results bring out a series of problems, including decentralized information distribution, untimely update and management confusion. These problems lead to the lag of coal mine gas geology information in the construction of digital mine. By using gas-geology theory and information technology, the management of coal mine gas-geology information and related techniques have been studied systematically. A gas emission data filtering method and a forecasting model of gas emission was put forward.A system platform of coal mine gas geology information based on GIS was developed.And the integrated management and application of mine gas geology information,automatic establishment of coal mine gas geology maps, the forecast and warning of coal face gas emission were realized.The main research results are as follows:(1) Coalmine gas occurrence tectonic level control rule is studied, and the main geological conditions and factors affecting coal and gas outburst are analysed. Based on these research, the demand of gas geological informatization in the coal mine is analysed systematically.(2) The system architecture of coal mine gas geology information system platform based on GIS is put forward, and the overall design idea of information processing function module is also raised. AutoCAD is taken as the development platform, the system platform is developed by using C++ and.Net programming language with the GIS technology and the theory of gas occurrence tectonic level control.(3) Based on the coal mine basic spatial data fusion technology, the gas geological information collaborative management mode was built. The integrated application and management of specialized data information can be realized, such as mine geology,measuring, ventilation, mining, design, scheduling, dynamic monitoring, etc.(4) The mathematical model of gas emission data screening is built, and gasemission data automatic screening is succeed. The parameter of gas emission prediction is determined by using the perspective of gas geology. Gas emission prediction model is built by using the grey system theory and fractal theory based on time series, and it improve the prediction accuracy and to achieve gas emission prediction in the long-term and short-term. The early warning model of gas emission prediction is built to perform real-time predicted results correction with reference to the gas monitoring data.(5) The system platform is used in Pingdingshan No.12 coal mine. It realized the automatic establishment of coal mine gas geological map and other mine map and working face gas emission prediction. And the function of gas emission warning is verified in this system.