| China's mining activities has been gone for several decades,and the over-exploitation of mines has huge impact on the surrounding environments,and the rate of settlement of surface is faster than before.Effective monitoring and management of mining subsidence is particularly important.Traditional methods of monitoring still use artificial monitoring.This way Not only long,and its accuracy is greatly affected by human factors.Accuracy can't be guaranteed and efficiency is low.The system can't realize the real-time update,and a lot of manpower and material resources are consumed,and storage of data is difficult.This modification limits the production and development of the mine.This design according to the relevant theories and steps of systematic development and requirements of the supervision system for coal mining subsidence,as can be seen in the following paragraphs.1.The choice of technology development of system.Here,I chose the current popular COM GIS development and we develop system with ArcGIS Engine.In the choice of development mode,according to the systematic goal,the C/S mode(client/server)mode is chosen for systematic development.We select VisualStudio2010 as the platform,which can be perfectly compatible with ArcGIS Engine for the development of GIS system of User defined.We select the C# language which is based on object-oriented programming(OOP)as the development language,which is widely used in the development of management systems of enterprises.In the database solution,we chose the current widely used relational database management system as the solution of database for storing and managing spatial data.The database is mainly established by SQLServer2008,and Arc SDE acts as the spatial data access interface.2.Design and establishment of the database.First of all,the different solution of database is compared and the full relational database was selected as solution.The fully relational database management system is major database solution that database stores all data,and then database uses the spatial data access interfaces for accessing to spatial data.The database stores real-time data,manually processed data,and historical data.These data are respectively stored in different locations of the database.In the database,a series of data tables are created for storing the data.Finally,the database is built in the system.3.Design of system.This part includes required analysis of system function: analysis of role of systematic users,different permissions between the different roles.In the architecture of system,it is divided into five layers: UI interface,supervision system layer,data support layer,framework service layer,software and hardware layer.Design of each function of the system.According to the requirements of the system,the design of functions of the whole system includes the basic function of GIS,data management function,real-time query of collapse condition,project process management function,predictive function and early warning function,functions of managing land bureau users,map printing capability,and data transmission in real-time.4.The realization of systematic function.The basic functions include zoom in,zoom out,pan,full extent,eagle eye,add,save,open,copy,cut,deleting,and undoing.In the interface of login,the user inputs the username and password for entering the system.In the systematic management function,we achieve the functions of adding users,deleting users,and modifying users.In the predictive function and early warning function,we input various parameters into the setting interface of parameter,and then the relevant results can be calculated.In the interface of warning function,we can input the settlement threshold for early warning of the settlement value,and different alarm durations can also be selected in this interface.In the function of project process management,the system merely implements the review of the relevant file of project,and the subsequent functions of this module need to be further improved. |
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