煤矿开采沉陷自动化监测系统及其精度分析

Automatic monitoring system for coal mining subsidence and its accuracy analysis

文章从系统组成和精度分析2个方面，介绍了煤矿开采沉陷自动化监测系统的前期工作。该系统以GNSSc（）RS技术、GIS技术、计算机网络通讯技术、移动PDA技术、现代测量数据处理技术等为支撑，以GNSS基准站子系统、GNSS连续运行监测站子系统、数据监控中心子系统、实时数据采集终端子系统和通讯子系统等为核心模块，形成了集设备监控、数据采集、数据传输、数据处理与分析、沉陷预计与预警、开采损害评价等为一体的综合地表移动自动化监测系统。利用1d的实测数据对9个GNSS连续运行监测站的内符合精度进行了分析，结果表明，x方向的内符合精度在±3．5～±4．9inIn之间，平均为±4．4mm；Y方向的在±3．O～±4．8mm之间，平均为±3．7mm；H方向的在±8．O～±10．1mm之间，平均为±8．9mm。

The automatic monitoring system for coal mining subsidence is introduced from the perspec- tives of system composition and accuracy analysis. The system is based on GNSS CORS technology, GIS technology, computer network communication technology, mobile PDA technology and modern measurement data processing technology. It takes GNSS reference station subsystem, GNSS COR$ monitoring station subsystem, data monitoring center subsystem, real-time data acquisition terminal subsystem and communication subsystem as core modules. Equipment monitoring, data collecting and transmitting, data processing and analyzing, subsidence predicting and early warning, mining damage evaluating are built up into an automatic monitoring system for coal mining subsidence. Based on the measured data of nine GNSS stations in one day, it is shown that the internal accuracy in the X direc- tion is among ±3.5-±4.9 ram, the average is ±4.4 mm in they direction is in ±3.0~±4.8 mm, the average is ±3.7 ram; and in the H direction is in ±8.0-±10. 1 ram, the average is ±8.9 mm.