Three-dimensional Geological Modeling In A Coal Mine In Ningxia And Mine Inflow Forecast

The mine is located in the eastern part of Ningxia Hui Autonomous Region, Fieldcovers an area of65km2. The mine is the main aquifer water filling Zhiluo SandstoneAquifer, which Zhiluo thick sandstone aquifer type, the average thickness of138.7m. Thisthesis mainly to forecast the2#coal roof aquifer water level.In this thesis, by collecting, collating data mining survey work boreholes and hydrogeologicaldata, using3D visualization modeling software GMS, the mine generated three-dimensional model ofthe hydrogeological structure. The model can stereo display the mine hydrogeology structure,let us to the mining area have a overall understanding of the formation and aquifer. Then,split the East and West of the cross-section can clearly display three-dimensional model ofthe hydrogeological structure of all the details inside. Hydrogeological model of thethree-dimensional analysis, the use of "Oi Law" and "Numerical Methods"#2for11coalmining area Zhiluo roof sandstone aquifer under the Mine Inflow forecast rainfall sparseFinally on better solutions.This thesis consists of six chapters, the first chapter introduces the researchsignificance and background, analyzing and summarizing the current research status in thisfield, and briefly describes the content of this study and technology roadmap; The secondchapter presents the general situation in the study area, mainly including the location of thestudy area, topography and geomorphology, survey, etc.; The third chapter analyze thecollected data, the generalized, getting the mine geological conditions, mining field mainlyincludes the structure of mine strata, field, and so on and so forth; The fourth chaptermainly introduces the aquifer and its characteristics, the water-resisting layer, groundwaterrecharge, runoff and discharge conditions and the mine water inflow, etc;The fifth chapteranalyzing drilling data collection, using GMS7.1establish three-dimensional hydrogeologyvisualization model of mining area, in order to more clearly reflect the model within thevarious details, East and West of the model to the split, and then analyze the stratigraphicsection, then analyze the profile of stratigraphy and hydrogeological conditions; The sixthchapter is the core of this paper, the use of "Oi Law" and "Numerical Methods" pit miningarea two methods to predict water inflow, using Visual Modflow software to build pitmining district of groundwater numerical simulation model, model validation feasible afterthe optimum solution proposed sparse rainfall.