應用新型地聲檢知器Raspberry Shake 3D於坡地災害監測之研究

Application of Raspberry Shake 3D Geophone for Monitoring Slope Disasters

10.29417/JCSWC.202209_53(3).0001

陳欣妤(Hsin-Yu Chen)；黃清哲(Ching-Jer Huang)；陳樹群(Shu-Chin Chen)；趙韋安(Wei-An Chao)；楊哲銘(Che-Ming Yang)

地表震動訊號 ； 土石流 ； 地聲檢知器 ； Raspberry Shake 3D ； 區域地震 ； Ground Vibration Signals ； Debris Flow ； Geophone ； Raspberry Shake 3D ； Local Earthquake

中華水土保持學報

53卷3期（2022 / 09 / 01）

139 - 145

繁體中文

本研究應用一量測頻寬為0.5 - 40 Hz的新型地聲檢知器Raspberry Shake 3D（簡稱RS3D）量測人工土石流的地表震動訊號，並與傳統所用的地聲檢知器（HG-6-B Coil，量測頻寬為5 - 175 Hz）所測到的結果比較。人工土石流地動訊號監測研究地點位於惠蓀林場蘭島溪土砂運移試驗站，人工土石流主要是藉由開啟能高大圳閘門，產生水流沖垮堰塞壩而產生。試驗結果顯示RS3D可量測到傳統地聲檢知器無法量測到的5 Hz以下的地表震動訊號。此外，試驗期間RS3D也記錄到一場偶發的區域地震（local earthquake）的地表震動訊號。證明此種新型地聲檢知器RS3D在監測區域地表震動訊號的表現上，已突破傳統地聲感測器（geophone）的限制。由於低頻訊號隨距離的衰減較高頻訊號慢；因此，相較於傳統的地聲檢知器，RS3D可提早偵測到會產生地表震動的坡地災害，如土石流、山崩、落石等，增加坡地災害疏散及應變時間。

We applied a new geophone, the Raspberry Shake 3D (RS3D), with a measuring frequency of 0.5-40 Hz to detect the ground vibrations produced by an artificial debris flow. Recorded signals were compared with those obtained using a conventional geophone with a measuring frequency of 5-175 Hz. The study site was located at the Landao Creek experimental station in Huisun Forest in Nantou, Taiwan. Water from the Nenggao Canal was guided into Landao Creek to induce a dam breach and generate the artificial debris flow. The test results reveal that the RS3D can detect ground vibration signals with frequencies lower than 5 Hz, which is beyond the capability of the conventional geophone tested. Furthermore, during the field test, the RS3D detected ground tremors from occasional local earthquake. This further demonstrates the capability of the RS3D for monitoring ground vibrations in its surrounding region. Because the decay of low-frequency ground vibrations is slower than that of high-frequency ground vibrations, the RS3D can detect slope failures, such as landslides, debris flows, and rockfalls, that generate ground vibrations earlier than the conventional geophone can. This increases the duration of evacuation and response time for disaster mitigation.

1. Arattano, M.(1999).On the use of seismic detectors as monitoring and warning systems for debris flows.Natural Hazards,20,197-213.
2. Arattano, M.,Marchi, L.(2008).Systems and sensors for debris-flow monitoring and warning.Sensors,8,2436-2452.
3. Arattano, M.,Moia, F.(1999).Monitoring the propagation of a debris flow along a torrent.Hydrological Sciences–Journal–des Sciences Hydrologiques,44(5),811-823.
4. Berti, M.,Genevois, R.,LaHusen, R.,Simoni, A.,Tecca, P.R.(2000).Debris flow monitoring in the Acquabona Watershed on the Dolomites (Italian Alps).Phys. Chem. Earth(B),25(9),707-715.
5. Chang, J.M.,Chao, W.A.,Chen, H.,Kuo, Y.T.,Yang, C.M.(2021).Locating the rock slope failures along highways and understanding their physical process using seismic signals.Earth Surface Dynamics,9,505-517.
6. Chao, W.A.,Wu, Y.M.,Zhao, L.,Chen, H.,Chen, Y.G.,Chang, J.M.,Lin, C.M.(2017).A first near real-time seismology-based landquake monitoring system.Scientific Reports,7,43510.
7. Chen, C.H.,Chao, W.A.,Wu, Y.M.,Zhao, L.,Chen, Y.G.,Ho, W.Y.,Lin, T.L.,Kuo, K.H.,Zhang, R.M.(2013).A seismological study of landquake using a real-time broadband seismic network.Geophysical Journal International,194,885-898.
8. Feng, Z.Y.,Huang, H.Y.,Chen, S.C.(2020).Analysis of the characteristics of seismic and acoustic signals produced by a dam failure and slope erosion test.Landslides,17(7),1605-1618.
9. Galgaro, A.,Tecca, P.R.,Genevois, R.,Deganutti, A.M.(2005).Acoustic module of the Acquabona (Italy) debris flow monitoring system.Natural Hazards and Earth System Sciences,5(2),211-215.
10. Huang, C.J.,Chu, C.R.,Tien, T.M.,Yin, H.Y.,Chen, P.S.(2012).Calibration and deployment of a fiber-optic sensing system for monitoring debris flows.Sensors,12(5),5835-5849.
11. Huang, C.J.,Shieh, C.L.,Yin, H.Y.(2004).Laboratory study of the underground sound generated by debris flow.Journal of Geophysical Research: Earth Surface,109,F01008.
12. Huang, C.J.,Yin, H.Y.,Chen, C.Y.,Yeh, C.H.,Wang, C.H.(2007).Ground vibrations produced by rock motions and debris flows.Journal of Geophysical Research: Earth Surface,112,F02014.
13. Hürlimann, M.,Rickenmann, D.,Graf, C.(2003).Field and monitoring data of debris-flow events in the Swiss Alps.Canadian Geotechnical Journal,40,161-175.
14. Itakura, Y.,Koga, Y.,Takahashi, J.I.,Nowa, Y.(1997).Acoustic detection sensor for debris flow.Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment
15. Kogelnig, A.,Hübl, J.,Suriñach, E.,Vilajosana, I.,McArdell, B.(2011).Infrasound produced by debris flow: propagation and frequency content evolution.Natural Hazards,70,1713-1733.
16. Lavigne, F.,Thouret, J.C.,Voight, B.,Suwa, H.,Sumaryono, A.(2000).Lahars at Merapi volcano, Central Java: and overview.Journal of Volcanology and Geothermal Research,100,423-456.
17. Marchi, L.,Arattano, M.,Deganutti, A.M.(2002).Ten years of debris-flow monitoring in the Moscardo Torrent (Italian Alps).Geomorphology,46,1-17.
18. Okuda, S.,Okunishi, K.,Suwa, H.(1980).Observation of debris flow at Kamikamihori Valley of Mt. Yakedade.Excursion Guide-book of the 3rd Meeting of IGU commission on field experiment in geomorphology,Japan:
19. Toksöz, M.M.,Johnson, D.H.(1981).Seismic wave attenuation.Tulsa, Okla, USA.:Society of Exploration Geophysics.
20. Zhang, S.(1993).A comprehensive approach to the observation and prevention of debris flows in China.Natural Hazards,7,1-23.
21. 行政院農業委員會水土保持局, Council of Agriculture, Executive Yuan(2017).水土保持手冊.行政院農業委員會水土保持局=Soil and Water Conservation Bureau, Council of Agriculture, Executive Yuan.
22. 陳欣妤, H.Y.(2016)。Taiwan, ROC，國立中興大學水土保持學系=National Chung Hsing University。
23. 陳樹群, S.C.,安軒霈, S.P.,徐子揚, T.Y.,王強, C.(2015)。惠蓀林場蘭島溪高精度可調流量土砂試驗站。中華水土保持學報，46(1)，1-6。
24. 黃清哲, C.J.,葉智惠, C.H.,尹孝元, H.Y.,王晉倫, C.L.(2005)。地聲探測器應用於土石流監測之研究。中華水土保持學報，36(1)，39-53。
25. 詹錢登, C.D.,李明熹, M.H.(2004)。土石流發生降雨警戒模式。中華水土保持學報，35(3)，275-285。
26. 顏利宸, L.C.(2014)。Taiwan, ROC，國立成功大學水利及海洋工程學系=National Cheng Kung University。