A Research On Calculation Method And Application Of Groundwater Fracture Media Network Flow

Coal mine water hazard has long restricted the safety production of thecoal industry. The fracture structure connect to the aquifers in bedrock so as toconsititute the mine water inrush channel,and these hydraulic conductivity structure ofspace-time distribution is extremely uneven and non-continuous.If we couldaccurately describe the configuration of water and calculate the ground water offracture network flow distribution and master the change of water level in minningfield,then to to develop a reasonable plan and take waterproof measures to ensure thesafe production has important practical significance for coal mine.So in order to accurately describe the rock fracture network flow field condition,based on the discontinuous fracture media seepage theory and fluid mechanics. Takethe fracture of the intersection as a node and the node between the fracture line calledline element, line element flow to the common node of each wire flow amount equalto the change in storage. And establish the seepage equations. Build the groundwaterseepage flow model of fracture network flow media. And use this method tocalculation the simulation domain, then compared the results with the classicalnumerical method, the result evidence that the line element method model canaccurately characterize the structural characteristics of fractured aqueous medium, andwhich is able to accurately reflect the actual groundwater flow direction.Finally aimed at the calculation of fracture network flow problem of WuTongZhuang coal mine.By analyzing the meteorological and hydrological, geological,hydrological and geological conditions and the conditions of water flowing fracturedstructure of the scrope of mine and build the concept of discrete fracture network flowmodel and the mathematical model of the scrope of mine. The model was applied tocalculation of groundwater flow field in mining field research.Then use the elementmethond to slove the fractured network flow model based on the relevant boundaryconditions. Finally predicted the dynamic changes of the groundwater flow field inWuTong Zhuang coal mine.The simulation results provide a scientific basis for thedesign and arrangement of the mine mining plan and which has a guiding significancefor water prevention and control measures.