3D geological modeling is an inevitable choice for coal exploration to adapt to the transformation of coal mining for green, fine, transparent and Intelligent mining. In the traditional Coalfield exploration geologica...3D geological modeling is an inevitable choice for coal exploration to adapt to the transformation of coal mining for green, fine, transparent and Intelligent mining. In the traditional Coalfield exploration geological reports, the spatial expression form for the coal seams and their surrounding rocks are 2D maps. These 2D maps are excellent data sources for constructing 3D geological models of coal field exploration areas. How to construct 3D models from these 2D maps has been studying in coal exploration industry for a long time, and still no breakthrough has been achieved so far. This paper discusses the principle, method and software design idea of constructing 3D geological model of an exploration area with 2D maps made by AutoCAD/MapGIS. At first, the paper analyzes 3D geological surface expression mode in 3D geological modeling software. It is pointed out that although contour method has unique advantages in coal field exploration, TIN (Triangular Irregular Network) is still the standard configuration of 3D modeling software for coal field. Then, the paper discusses the method of 2D line features obtaining elevation and upgrading 2D curve to 3D curve. Next, the method of semi-automatic partition is introduced to build the boundary ring of the surface patch, that is, the user clicks and selects the line feature to build the outer boundary ring of the surface patch. Then, Auto-process method for fault line inside of the outer boundary ring is discussed, it including construction of fault ring, determining fault ring being normal fault ring or reverse fault ring and an algorithm of dealing with normal fault ring. An algorithm of dealing with reverse fault ring is discussed detailly, the method of expanding reverse fault ring and dividing the duplicate area in reverse fault into two portions is introduced. The paper also discusses the method of extraction ridge line/valley line, the construction of fault plane, the construction of stratum and coal body. The above ideas and methods have been initially implemented in the “3D modeling platform for coal field exploration” software, and applied to the 3D modeling practice of data from several coal field exploration areas in Ningxia, Shanxi, Qinghai, etc.展开更多
In recent years, Chinas social economy has developed vigorously, and the demand for coal mine resources has been increasing. Coal mine resources have played an important role in peoples daily production and life. In o...In recent years, Chinas social economy has developed vigorously, and the demand for coal mine resources has been increasing. Coal mine resources have played an important role in peoples daily production and life. In order to ensure the social development and provide abundant coal mine resources, people have strengthened the research on innovative technologies in coal mining. Coalfield geological exploration is an important prerequisite for coal mining, and good exploration results are conducive to the smooth development of subsequent mining operations, and also an important basis for ensuring coal mining volume and operation efficiency. Therefore, people must pay attention to the research and application of modern coalfield geological exploration technology, actively promote the level of coalfield geological exploration technology, and provide support for the healthy development of coal mine.展开更多
With the continuous improvement of China's economic development speed and the level of scientific and technological development, China's coalfield geological investigation has also presented a series of new ch...With the continuous improvement of China's economic development speed and the level of scientific and technological development, China's coalfield geological investigation has also presented a series of new characteristics. Due to the large amount of coal mining in China, the reserves of coal fields are declining sharply. Under this background, it is necessary to master the scientific information about coal fields through geological exploration, so as to optimize the management effect and perfect the technical mechanism, and carry out the coal seam correlation correctly. On the basis of clarifying the important value of coal seam correlation, this paper discusses the concrete practice method of coal seam correlation in coalfield geological exploration for reference.展开更多
文摘3D geological modeling is an inevitable choice for coal exploration to adapt to the transformation of coal mining for green, fine, transparent and Intelligent mining. In the traditional Coalfield exploration geological reports, the spatial expression form for the coal seams and their surrounding rocks are 2D maps. These 2D maps are excellent data sources for constructing 3D geological models of coal field exploration areas. How to construct 3D models from these 2D maps has been studying in coal exploration industry for a long time, and still no breakthrough has been achieved so far. This paper discusses the principle, method and software design idea of constructing 3D geological model of an exploration area with 2D maps made by AutoCAD/MapGIS. At first, the paper analyzes 3D geological surface expression mode in 3D geological modeling software. It is pointed out that although contour method has unique advantages in coal field exploration, TIN (Triangular Irregular Network) is still the standard configuration of 3D modeling software for coal field. Then, the paper discusses the method of 2D line features obtaining elevation and upgrading 2D curve to 3D curve. Next, the method of semi-automatic partition is introduced to build the boundary ring of the surface patch, that is, the user clicks and selects the line feature to build the outer boundary ring of the surface patch. Then, Auto-process method for fault line inside of the outer boundary ring is discussed, it including construction of fault ring, determining fault ring being normal fault ring or reverse fault ring and an algorithm of dealing with normal fault ring. An algorithm of dealing with reverse fault ring is discussed detailly, the method of expanding reverse fault ring and dividing the duplicate area in reverse fault into two portions is introduced. The paper also discusses the method of extraction ridge line/valley line, the construction of fault plane, the construction of stratum and coal body. The above ideas and methods have been initially implemented in the “3D modeling platform for coal field exploration” software, and applied to the 3D modeling practice of data from several coal field exploration areas in Ningxia, Shanxi, Qinghai, etc.
文摘In recent years, Chinas social economy has developed vigorously, and the demand for coal mine resources has been increasing. Coal mine resources have played an important role in peoples daily production and life. In order to ensure the social development and provide abundant coal mine resources, people have strengthened the research on innovative technologies in coal mining. Coalfield geological exploration is an important prerequisite for coal mining, and good exploration results are conducive to the smooth development of subsequent mining operations, and also an important basis for ensuring coal mining volume and operation efficiency. Therefore, people must pay attention to the research and application of modern coalfield geological exploration technology, actively promote the level of coalfield geological exploration technology, and provide support for the healthy development of coal mine.
文摘With the continuous improvement of China's economic development speed and the level of scientific and technological development, China's coalfield geological investigation has also presented a series of new characteristics. Due to the large amount of coal mining in China, the reserves of coal fields are declining sharply. Under this background, it is necessary to master the scientific information about coal fields through geological exploration, so as to optimize the management effect and perfect the technical mechanism, and carry out the coal seam correlation correctly. On the basis of clarifying the important value of coal seam correlation, this paper discusses the concrete practice method of coal seam correlation in coalfield geological exploration for reference.
