Monitoring and identification of landslide slopes by GPS survey

GPS测量滑坡边坡监测与识别

• 批准号: 05404076
• 负责人: SASSA Kyoji
• 金额: $ 16.7万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (A)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05404076/
• 关键词: Landslide; Slope Failure; Satellite Survey; GPS; Hazard Map; 人工衛星計量; GPS

Twelve observing points and benchmarks are settled in and around the Taguchi landslide, Okayama Prefecture. Landslide movement of about 2cm a year had been observed by borehole inclinometer in the lower part of thie landslide, however, the middle and upper part of this landslide had not been investigated. In order to recognize sliding slopes and to depict the boundary of landsliding blocks, static GPS surveys were carried out four times in a year. Small amount of landslide movement was detected at the middle part, but no obvious movement was detected by these surveys. No more than 2 cm per a year of movement was detected at the lower part of this landslide was detected, and it coincides with the borehole inclinometer monitoring. More than 5 cm of movement was detected at a point on a new road embankment and it showed failure of the embankment was possible. Municipal government decided to reinforce the embankment from this survey result.As a result, GPS survey was proved to have ability to detect landslide movement of greater than 5 mm. It is enough precision for the purpose of monitoring and identification of landslide slopes, although stable benchmark should be chosen carefully.

在冈山县田口滑坡及其周围安置了12个观测点和基准。通过钻孔测斜仪观测到滑坡下半部分每年约有2cm的滑坡运动，但未对该滑坡中上半部分进行调查。为了识别滑坡坡面和描绘滑坡块体边界，每年进行4次静态GPS测量。在中段检测到少量滑坡运动，但未发现明显的滑坡运动。该滑坡下半部分的年移动量不超过2 cm，与钻孔测斜仪监测结果吻合。在新路堤的某一点上检测到超过5厘米的移动，这表明路堤可能会失败。市政府根据这次调查结果，决定对堤防进行加固。结果证明，GPS测量具有探测大于5mm滑坡运动的能力。对于滑坡边坡的监测和识别来说，其精度是足够的，但需要慎重选择稳定基准。

项目成果

Gong,S.Q,Wong,Y.Zhu: "Application of GPS Survey in Monitoring Lishan Landslide" 日中共同研究「華清池地すべり災害予測」研究報告書. (印刷中). (1996)

宫树清，黄永朱：“GPS测量在梨山滑坡监测中的应用”，中日联合研究“华清池滑坡灾害预测”研究报告（1996年出版）。

Suemine,A.,H.Fukuda,T.Konishi,N.Kodama,T.Hamada: "Landslide Observation by GPS" International workshop on prediction of Rapid Landslide Motion,Proc.Specialsession,Prediction of Landslicles in Lishan,China. 211-226 (1994)

Suemine,A.,H.Fukuda,T.Konishi,N.Kodama,T.Hamada：“Landslide Observation by GPS”国际快速滑坡运动预测研讨会，Proc.Specialsession，中国历山山体滑坡预测。

Suemine・Fukuoka・Konishi・Kodama・Hamada: "Laudslide Observation by GPS" International Workshop on Prediction of Rapid Landslide Motion,Proc,Special Session. 1. 211-226 (1994)

Suemine、Fukuoka、Konishi、Kodama、Hamada：“Laudslide Observation by GPS”国际快速滑坡运动预测研讨会，Proc，特别会议 1. 211-226 (1994)。

Sokobiki・Fukuoka・Sassa: "GPS Monitoring of Laudslide Movement" Proc,Techinical Session of S1.04,IUFRO XX Would Congress. 1(in press). 5 (1995)

Sokobiki、Fukuoka、Sassa：“Laudslide 运动的 GPS 监测”Proc，S1.04 技术会议，IUFRO XX 大会 1（印刷中）。

FUKUOKA,H.and K.SASSA: "GPS Monitoring System of Slope Instability" Proc.North-East Asia Symposium on Landslides and Debris Flows. 1(in print). (1994)

FUKUOKA,H.and K.SASSA：“斜坡失稳的 GPS 监测系统”Proc.东北亚山体滑坡和泥石流研讨会。