高频GPS单点测速监测爆破近场震动  

Monitoring Near-Blast Vibration Using High-Rate GPS Absolute Velocity Determination

作　　者：谢先启[1] 束远明 贾永胜[1] 姚颖康[1] XIE Xianqi;SHU Yuamning;JIA Yongsheng;YAO Yingkang(Wuhan Blasting Engineering Co..Ltd., Wuhan 430023, China;College of Marine Geosciences, Ocean University of China, Qingdao 266100, China;Key Laboratory of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Qingdao 266100, China)

机构地区：[1]武汉爆破有限公司,湖北武汉430023 [2]中国海洋大学海洋地球科学学院,山东青岛266100 [3]海底科学与探测技术教育部重点实验室,山东青岛266100

出　　处：《测绘地理信息》2019年第2期85-88,共4页Journal of Geomatics

基　　金：国家自然科学基金(41231174)

摘　　要：近年来高频GPS被广泛应用于地震等地壳瞬时运动的监测,为监测爆破引起的地表运动提供了可能。利用高频GPS单点测速技术对武汉市云鹤大厦爆破工程进行了监测。计算结果表明,基于采集的5 Hz GPS观测数据,水平测速精度可达到mm/s,垂向测速精度达到1 cm/s,在爆破近场探测到E、N、U方向速度分别达到4.2 cm/s、2.1 cm/s、5.6 cm/s,表明高频GPS有能力探测到速度在1 cm/s以上的震动。As the rapid development of urbanization in our country, the controlled blasting projects are becoming increasingly frequent. In recent years, high-rate GPS technology is widely used in monitoring instantaneous crustal movements such as earthquakes, which provides a powerful tool for monitoring crustal movements caused by blasting. In this paper, the technology of high-rate GPS absolute velocity determination is used to monitor the blasting of Yunhe Building in Wuhan. The statistics of 5 Hz GPS show that the accuracy of GPS absolute velocity determination reaches mm/s horizontally and 1 cm/s vertically. Near-blast vibration is detected, reaching 4.2 cm/s, 2.1 cm/s and 5.6 cm/s in the east, north and up direction respectively, which proves the capability of high-rate GPS to detect the vibration with amplitudes of more than 1 cm/s.

关 键 词：高频GPS 单点测速 爆破监测 

分 类 号：P258[天文地球—测绘科学与技术]