Application Of Ultra High Density Space Perspective Technology In Dynamic Monitoring Of Floor Failure In Coal Mining

The ultra-high-density electrical system has various types of devices,simple and fast operation,and strong anti-interference ability.Combined with the space-based technology based on the principle of inter-hole resistivity CT,it can acquire a large number of link data and make different according to actual needs.Data processing of the device.Coinciding with the mine mining entering the deep era,the damage depth of the roadway floor is unknown,and the water mass is unknown.It is necessary to complement the advantages of the ultra-high density electric method system and the spatial perspective technology,and to forecast the unfavorable Geological conditions of the mining floor and guide the accurate construction of the project.In order to explore the investigation effect of ultra-high density spatial perspective technology,this paper mainly does the following research:(1)A systematic summary of the current research situation at home and abroad is made,and the principle of ultra-high density electric method system and spatial perspective technology theory are elaborated in a column,their deep characteristics are analyzed,and the formula for calculating the point potential under boundary conditions is summarized.(2)To set up a simple and complex typical geoelectric model for the occurrence and geological characteristics of undesirable Geological bodies in coal seams,and carry out corresponding numerical simulation in four aspects:potential,electric field,current density,and resistivity inversion.Analysis of the response effects.(3)By setting a model of interference factors in an ideal state,a single simulation of the existing factors in the process of data processing is made,and the resulting graphic results are compared to determine the impact of these factors on the actual measurement results.And make reasonable optimization correction.(4)Combining with the engineering example of Baizhuang Coal Mine,the dynamic monitoring situation under fixed interval is analyzed,the relationship between resistivity and stress between coal seam and aquifer is searched,the guiding problem of water movement is summarized,and the numerical simulation results of the geoelectric model established are verified to have guiding significance for practical engineering,and the application characteristics of ultra-high density spatial perspective technology in mining area are summarized.Theoretical research and practical results show that the ultra-high density spatial perspective technology has the advantages of high resolution,good mapping effect,high detection accuracy,and strong flexibility.The detection effect on the damage depth of coal mine floor and the direction of water transport is obvious.The typical geoelectric model set up in this paper is consistent with the abnormal body distribution in the coal seam in the working surface of the mine.The numerical simulation has a high adaptability and has a certain degree of guidance for actual engineering exploration.