1.Xi’an Research Institute, China Coal Technology and Engineering Group Corp., Xi’an , China;2.College of Geology and Environment，Xi’an University of Science and Technology, Xi’an , China;3.Jizhong Energy Resources Co., Ltd., Xingtai , China

In order to obtain detailed dynamic changing information on both hydrogeological structure and water filling factors from a stope of mine, thus improve the monitoring and early warning technology against mine water disaster, a concept of visualizing 3D structure of water filling is proposed.This three-dimensional structure includes a static model and a dynamic visualization model with the static model being a model of real body, and the dynamic visualization model is a visualized model from embedding the static model with temporal and spatial change information of water filling source and water filling channel.The static model is constructed based on exploration data such as geological, geophysical, and hydrogeological on data using the open-source geometry kernel Open CASCADE combining DSI discrete smooth interpolation algorithm and Kriging interpolation algorithm.The static model is created to demonstrate the static characteristics of the hydrogeological structure in a stope scale.On another hand, the dynamic model relies on a range of dynamic information such as water pressure, water temperature, stress-strain, apparent resistivity and fracture range, to generate derivative dynamic data such as hydraulic lifting surface and the floor failure surface.In the dynamic model, above dynamic parameters are embedded with the static model to illustrate the changes in time and space for water source and channel.The maximum response time for data updating of the dynamic model should be 10～20 s.Based on the theory of “three zones under the bottom” of the floor, we propose a new technical idea to create a water inrush early warning criterion based on whether the “water pressure rising surface” and “floor failure surface” are overlapped.The dynamic model was tested in No.11916 working face of east shaft of Gequan Mine.After collecting geological, geophysical, hydrogeological and mining engineering information, and by integrating essential dynamic monitoring information of water filling such as sensors, network continuous electrical method and microseism, a three-dimensional water filling structure visualization model of the stope is constructed, which is applied to the comprehensive monitoring and early warning system of the floor water inrush, and provides a new technical platform for designing the monitoring system of floor water hazard and the intelligent early warning for No.11916 working face.