Practice and technical approach of GPS observation of mining-induced ground subsidence

作     者：GAO Jun-hai~(1,2) WU Li-xin~1 (1. China University of Mining and Technology Beijing Campus, Beijing 100083, China 2. Tangshan Branch, China Coal Research Institute, Tangshan 063012, China) 

出 版 物：《中国有色金属学会会刊：英文版》 (Transactions of Nonferrous Metals Society of China)

年 卷 期：2005年第15卷第S1期

页      面：65-68页

核心收录：

学科分类：081802[工学-地球探测与信息技术] 081803[工学-地质工程] 08[工学] 081105[工学-导航、制导与控制] 0818[工学-地质资源与地质工程] 0804[工学-仪器科学与技术] 0811[工学-控制科学与工程] 

基　　金：FoundatianitemProject (99 mining 20267) supported by Coal Science Fund 

主　　题：mining-induced ground subsidence GPS observation observation accuracy reliability 

摘      要：The base vector between 2 poins and a high-precision geodetic height difference can be obtained by GPS. If the geodetic height of a point is known, the geodetic height of each observation point in a net can be obtained. When surveying the subsidence value in the mining-induced ground subsidence, the change of the height of monitoring point is needed. On the above theoretical basis, the problem involved in GPS observation of mining-induced ground subsidence and their counter measures were discussed, and an introduction was made that the subsidence value obtained in the monitoring mining-induced ground subsidence can use the change of height of geodetic as a alternative, the result of check on the accuracy and reliability of repetitions observations was analysed. Finally, the effect of errors on accuracy of GPS observation and their reduction measures were elaborated.