Construction and Application of Three Dimensional Spatial Flow Field Model of Mine Groundwater
In the past period of hydrogeological exploration work in mining areas,in view of the shallow mining depth,and in order to simplify the calculation,most of the groundwater movements were included in the two-dimensional plane flow category.With the continuous increase of the development scale,mining intensity and mining depth of mineral resources,the vertical movement characteristics of ground water become more and more significant,especially under the condition of large drawdown,the groundwater flow field presents typical three-dimensional spatial flow field characteristics.If the vertical movement of groundwater is ignored and the three-dimensional model of groundwater flow system is simplified to a two-dimensional model,the model deviation will be large,resulting in serious distortion of the prediction results of mine water inflow.Therefore,The vertical velocity component of ground water movement cannot be ignored.On the basis of conducting research on the construction of a three-dimensional spatial observation system for mine ground water,a three-dimensional flow field model was constructed for mine groundwater,the theories of"sponge"and"mushroom"types groundwater systems were proposed,and the movement laws,characteristics,key technologies for water prevention and control as well as the principles of relevant technical systems were clarified.The technical methods play a positive guiding role in hydrogeological exploration and water prevention and control work in mines of the same type,especially in deep mining.Through practical application in Beiminghe Iron Mine and Sijiaying Iron Mine,the understanding of the hydrogeological conditions in the mining area was deepened,the prediction accuracy of mine pit water inflow was greatly improved,and suitable water prevention measures for the mine were proposed to ensure mining safety.
Groundwater systemThree dimensional spatial flow fieldMine pit water inflowMine water prevention and control
万方数据
维普
