Establishment And Application Of Spatial Model Of Water-bearing System In Chongqing Zhongliangshan Moxianpo Tunnel Area

The construction of karst areas tends to bring about Various environmental geology problems,In particular,the problems of water resources destruction,surface water,groundwater loss,landslide debris flow,karst collapse and increasing desertification in some areas caused by the construction of karst areas in chongqing Zhongliangshan barrier structure tectonic anticline are more serious than those caused by tunnel construction in general karst areas.In order to better improve the forecast and solve these problems,it is can be through the three-dimensional geological modeling to reproduce the geological environment of the tunnel area,and Simulate the environmental hydrogeological problems under different engineering conditions.According to the field hydrogeological survey in Chongqing Zhongliangshan Moxianpo tunnel area,indoor analysis of information and other relevant information collected,as well as chongqing urban development planning and the current emergency hydrological problems encountered,carry out three-dimensional hydrogeological modeling of complex karst media,Using domestic MAPGISK9 software,Using GIS technology to establish the Spatial Model of Water-bearing System in Chongqing Zhongliangshan Moxianpo tunnel,Get the following conclusions:(1)The division of the bearing system in the area is mainly based on the lithology of the formation,ie,soluble rock and insoluble rock,The paleo-red thin muddy lime and the mudstone,shale,and argillaceous sandstone in Guan yingxia Anticline two wings Plaing the role of the relative barrier layer in research area The bearing system in this area is mainly divided into Guan yingxia Anticline NW wing bearing system,Guan yingxia Nuclear bearing system,Guan yingxia Anticline SE wing bearing system.(2)According to the preliminary collection of basic information and data(Including borehole data,geological plane and profile data,DEM data,remote sensing image data,surface hydrological data,etc.),After introducing the respectivecharacteristics of the stratigraphic stratigraphic modeling and the complex stratigraphic interaction modeling method,the three-dimensional geological space model Chongqing Zhongliangshan Moxianpo tunnel area is established by using the method of interactive geological modeling with Mapgisk9 software,And through the series of key steps of the establishment of the database,the associated database,the introduction of three-dimensional profile,set the profile properties,through the profile of the geological body,geological surface editing,superimposed satellite image,into the surface hydrological point,And finally the 3D model of the three-dimensional water-bearing system is established,and the model is presented in all directions.(3)After the establishment of the spatial model of the water system in Chongqing Zhongliangshan Moxianpo tunnel area,the corresponding application research is carried out,Mainly includes two main applications: One is applied to include three-dimensional geological body display,spatial information query,hydrological analysis,tunnel simulation and other spatial analysis,The second is to use the relevant spatial model of the relevant data for groundwater numerical simulation in four Kinds of Working Conditions of Tunnels Crossing Zhongliangshan,These four kinds of conditions are as follows:(1)Groundwater seepage field in Zhongliangshan Moxianpo tunnel area in natural condition,(2)Groundwater seepage field in Zhongliangshan Moxianpo tunnel area underground excavation conditions in coal mine,(3)Groundwater seepage field in Zhongliangshan Moxianpo tunnel area under tunnel excavation conditions,(4)Groundwater seepage field in Zhongliangshan Moxianpo tunnel area in the case of tunnel closure.