The Research Of Image Technique Of Convergence Factor

The apparent characteristics of mine production is underground operation, affected by geological conditions, geological structures and coal seam construction, and the disaster such as coal dust, methane, water, and roof collapse are liable to occur under the mining process and seriously imperil the mining safety and life of miners. Therefore it is necessary to find new techniques to predict the natural disaster in mine. Among the safety problems of coal mines the goaf water and gas outburst are main problems. To use the probing methods for prospecting the gas-logged zone and water guided structure in advance is the difficult task for the key projects belong to the ten five-year plan of China.As the forward position task, the author researches the electromagnetic wave prospecting techniques for predict the outburst liable coal seam. Then regional prediction technique for outburst liable zone has been formed combining the electromagnetic wave penetration technique and gas-geological methods.The author studied on the flame-proof frame antenna and its specifications. According to the theoretical analysis of characteristics, the author developed the flame-proof frame antenna for underground use. It has shown in the practice that its transmitting efficiency is same and over the geometric antenna, and the safety function has extremely been improved. As the result the geometric antenna had been replaced by the frame antenna.Image algorithm has been put forward and put into practice in personnel computer. Curb the error distribution by substitution method, which calculates the 6 and relative attenuation distribution in the prospecting area. On the other hand image of electromagnetic wave penetration data ends the history of distinguishing by manual work.The author put forward the selection of the convergence factor. Interpretation accuracy has been improved by combining the comprehensive curve operator and image techniques.The author also put forward the algorithm for the filter, extreme value rectifying and anisotropy and removed the partial interfere from the measurements efficiently.According to the above results, the author developed E-type electromagnetic wave penetration system for outburst liable coal seam. In No. 10 coal mine of Pingdingshanabove 50% of working area belong to non outburst zone of W 20150 and 20100 working faces. The applications for water and geological structure prospecting in Xishan, Huozhou, Yangquan, Luan, Datong, Xuzhou, Wanbei, Hualnan, Nantong, Ningxia, Handan and Kailuan mining areas had dramatically emancipated the productive force and gained the apparent social and economical benefits. The practice work verified the accuracy and effectiveness. Furthermore test the liability, stability, resolution and practicability of the special algorithm. Therefore amount of engineering problems had been solved.Radio wave penetration system is always in advance level in the world comparing to the similar product from other countries.In this paper the author also developed a set of high level data-processing software for Radio wave penetration system. The software has easy operation, friendly interface and data management function as well as parameter analysis function, data-processing function and image output function. It suits to use for any user to data-process and interpretation of Radio wave penetration system.