In the production process of coal mines, water prevention and control is one of the important factors that affect the safety in production. The water prevention and control effect is fully guaranteed and plays a key r...In the production process of coal mines, water prevention and control is one of the important factors that affect the safety in production. The water prevention and control effect is fully guaranteed and plays a key role in the safety in production of coal mines. As one of the main energy sources, coal has a large number of mined-out areas due to long-term mining. Due to the differences in geological conditions, it is necessary to apply the comprehensive geophysical exploration technology scientifically and reasonably to provide technical support for water prevention and control. In this paper, the commonly used geophysical techniques are discussed respectively, and the application of integrated geophysical techniques is studied in order to improve the effect of water prevention and control in coal mines.展开更多
The third land survey is of great significance to the verification of the actual amount of cultivated land in China, the examination and approval of new construction land and construction land, the revision of general...The third land survey is of great significance to the verification of the actual amount of cultivated land in China, the examination and approval of new construction land and construction land, the revision of general land use planning and land consolidation. The results of the three surveys will become the basis of land management. Mastering the detailed and accurate land resource utilization can further improve the precision level of land management and promote the sustainable development of economy and society. The comprehensive and detailed third land survey is inseparable from the accurate survey means. The high-resolution remote sensing image and high-precision data information acquisition method based on 3S technology provide technical support for the accurate survey of three tunes. 3S integration technology has accurate, efficient and rapid data acquisition and processing capabilities as well as strong spatial analysis and management capabilities. Through the comprehensive application of 3S technology in the work area, the three adjustment technology system is established to provide experience and guarantee for the accurate investigation of three adjustments.展开更多
Xinjiang in China is one of the areas worst affected by coal fires.Coal fires cannot only waste a large amount of natural resources and cause serious economic losses,but they also cause huge damage to the atmosphere,t...Xinjiang in China is one of the areas worst affected by coal fires.Coal fires cannot only waste a large amount of natural resources and cause serious economic losses,but they also cause huge damage to the atmosphere,the soil,the surrounding geology,and the environment.Therefore,there is an urgent need to effectively explore remote sensing based detection of coal fires for timely understanding of their latest development trend.In this study,in order to investigate the distribution of coal fires in an accurate and reliable manner,we exploited both Landsat-8 optical data and Sentinel-1A synthetic aperture radar(SAR)images,using the generalized single-channel algorithm and the InSAR time-series analysis approach,respectively,for coal fire detection in the southern part of the Fukang region of Xinjiang,China.The generalized single-channel algorithm was used for land surface temperature information extraction.Meanwhile,the timeseries InSAR analysis technology was employed for estimating the surface micro deformation information,which was then used for building a band-pass filter.The suspected coal fire locations could then be established by a band-pass filtering operation on the obtained surface temperature map.Finally,the locations of the suspected coal fires were validated by the use of field survey data.The results indicate that the integration of thermal infrared remote sensing and radar interferometry technologies is an efficient investigation approach for coal fire detection in a large-scale region,which would provide the necessary spatial information support for the survey and control of coal fires.展开更多
文摘In the production process of coal mines, water prevention and control is one of the important factors that affect the safety in production. The water prevention and control effect is fully guaranteed and plays a key role in the safety in production of coal mines. As one of the main energy sources, coal has a large number of mined-out areas due to long-term mining. Due to the differences in geological conditions, it is necessary to apply the comprehensive geophysical exploration technology scientifically and reasonably to provide technical support for water prevention and control. In this paper, the commonly used geophysical techniques are discussed respectively, and the application of integrated geophysical techniques is studied in order to improve the effect of water prevention and control in coal mines.
文摘The third land survey is of great significance to the verification of the actual amount of cultivated land in China, the examination and approval of new construction land and construction land, the revision of general land use planning and land consolidation. The results of the three surveys will become the basis of land management. Mastering the detailed and accurate land resource utilization can further improve the precision level of land management and promote the sustainable development of economy and society. The comprehensive and detailed third land survey is inseparable from the accurate survey means. The high-resolution remote sensing image and high-precision data information acquisition method based on 3S technology provide technical support for the accurate survey of three tunes. 3S integration technology has accurate, efficient and rapid data acquisition and processing capabilities as well as strong spatial analysis and management capabilities. Through the comprehensive application of 3S technology in the work area, the three adjustment technology system is established to provide experience and guarantee for the accurate investigation of three adjustments.
基金This work was supported by the National Natural Science Foundation of China(No.41874044)the Jiangsu Province Foundation of Brand Specialty Construction Projects in College and University(No.PPZY2015B144).The authors also gratefully acknowledge the European Space Agency for providing the Sentinel-1A SAR data and the US Geological Survey for providing the Landsat-8 data and the DEM data.The authors would also like to thank NASA for the auxiliary atmospheric data.
文摘Xinjiang in China is one of the areas worst affected by coal fires.Coal fires cannot only waste a large amount of natural resources and cause serious economic losses,but they also cause huge damage to the atmosphere,the soil,the surrounding geology,and the environment.Therefore,there is an urgent need to effectively explore remote sensing based detection of coal fires for timely understanding of their latest development trend.In this study,in order to investigate the distribution of coal fires in an accurate and reliable manner,we exploited both Landsat-8 optical data and Sentinel-1A synthetic aperture radar(SAR)images,using the generalized single-channel algorithm and the InSAR time-series analysis approach,respectively,for coal fire detection in the southern part of the Fukang region of Xinjiang,China.The generalized single-channel algorithm was used for land surface temperature information extraction.Meanwhile,the timeseries InSAR analysis technology was employed for estimating the surface micro deformation information,which was then used for building a band-pass filter.The suspected coal fire locations could then be established by a band-pass filtering operation on the obtained surface temperature map.Finally,the locations of the suspected coal fires were validated by the use of field survey data.The results indicate that the integration of thermal infrared remote sensing and radar interferometry technologies is an efficient investigation approach for coal fire detection in a large-scale region,which would provide the necessary spatial information support for the survey and control of coal fires.
