膨胀土边坡GNSS实时监测技术

doi:10.11947/j.AGCS.2023.20220562

摘要/Abstract

摘要： 膨胀土滑坡因其广泛性、破碎性、反复性、隐蔽性等特征,对工程危害严重。对其开展长期实时变形监测是实现膨胀土灾害防控的前提。在第一代膨胀土边坡GNSS监测技术试验的基础上,进行了两项改进:①设计了分层式GNSS/全站仪一体化监测装置,实现了膨胀土土质边坡分层式实时监测。②提出了综合多源参数的膨胀土边坡GNSS实时监测技术,提升了实时变形监测结果的可靠性和精度。相关技术和设备在广西宁明膨胀土公路边坡中进行了示范应用,分析了GNSS形变与多源监测数据的动态响应特征及诱滑原因,成功监测到一起膨胀土滑坡,研究成果具有可复制性和推广性。

关键词: 膨胀土边坡, GNSS, 实时监测, 多源数据, 动态响应, 边坡失稳

Abstract: Expansive soil landslide is harmful to the project because of its universality, fragmentation, repetition, concealment and other characteristics. The long-term real-time deformation monitoring is the premise for the prevention and control of expansive soil disasters. On the basis of the first generation of expansive soil slope GNSS monitoring technology and experiment, the research team made two improvements:① A layered GNSS/total station integrated monitoring device is designed to realize layered real-time monitoring of expansive soil slope. ② A GNSS real-time monitoring technology of expansive soil slope with comprehensive multi-source parameters is proposed to improve the reliability and accuracy of real-time deformation monitoring results. Relevant technologies and equipment have been applied in the demonstration of expansive soil highway slope in Ningming, Guangxi, and the dynamic response characteristics and induced sliding reasons of GNSS deformation and multi-source monitoring data have been analyzed. An expansive soil landslide was successfully monitored, and the research results are replicable and popularized.

Key words: expansive soil slope, GNSS, real-time monitoring, multisource data, dynamic response, slope failure

中图分类号:

P228

黄观文, 陈孜, 徐永福. 膨胀土边坡GNSS实时监测技术[J]. 测绘学报, 2023, 52(11): 1873-1882.

HUANG Guanwen, CHEN Zi, XU Yongfu. GNSS real-time monitoring technology of expansive soil slope[J]. Acta Geodaetica et Cartographica Sinica, 2023, 52(11): 1873-1882.

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