RESEARCH AND DEVELOPMENT OF FIELD DATA COLLECTING SYNCHRONOUSLY SYSTEM OF MINING AREA Min Ji, Yong Sun, Fengxiang Jin, Tao Jiang, Jian Wang, Xiaojing Yao Geomatics College of Shandong University of Science and Technology, Qingdao, China, 266510 jimin@sdust.edu.cn, sunyong3s@gmail.com 1. INTRODUCTION The ground subsidence and surface collapse is common in the mining area. The major cause for surface deformation is a wide range of mined-out space underground caused by coal mining [1]. While the surface subsidence, landslides and other geological disasters have a serious impact on mine production activities and people's life. It is very important to know well the changing situation of ground surface for analyzing and predicting the change trends of ground subsidence, helping for adjusting the way of exploitation and planning of land use in the mining area, and reducing the hazards of surface deformation. So it is necessary to design a field data collecting system which applies to mining area data acquisition. The system should acquire the deformation data with high precision, and could upload the collected data to the server remotely by using wireless network. At present, there are many field data collecting systems. Most of them collect data at field, and copy data from PDA to server machine manually when the surveyors come back to their offices. This procedure is very slow when the survey task is heavy, and it will need more storage space to save data at field. Now ArcGIS Server has provided the Web Map Services. Following this mechanism, the client side can update server data remotely. Just according this idea, the paper presented a mining area Field Data Collecting Synchronously System (FDCSS). In section II, the paper gave the system architecture design, functions design, and data organization mechanism. Section III introduced the critical technologies that were used in the FDCSS. Section IV gave the implementation interfaces at Yanzhou Coal Mining Company Limited mining area. The FDCSS’s idea will provide a new procedure for the mining area’s deformation data collection. 2. SYSTEM DESIGN 2.1. Mining Deformation Data Types In mining area, the deformation data that need to be collected include the ranges of subsidence or collapse area, the monitor control points’ three-dimension coordinates, the related attribute data, field photographs and so on. These data can be classified as spatial data and property data. In order to improve the survey precision, we can use the GPS Continuously Operating Reference Station (CORS) and Real-Time Kinematic (RTK) technologies to collect these spatial data. Yanzhou Coal Mining Company Limited has build up a single