Journal of the Korean Society of Hazard Mitigation (한국방재학회 논문집)

Korean Society of Hazard Mitigation (한국방재학회)
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A Study on Three Dimensional Expression of River Bed Cross Section Considering Surrounding Topography

주변지형을 포함한 3차원 하상단면 표출에 관한 연구

  • 정창삼 (인덕대학교 토목환경설계공학과)
  • Received : 2013.03.28
  • Accepted : 2013.04.29
  • Published : 2013.06.30
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Abstract

Recently the environmental change in river such as channel dredging and weir operation caused by climate change and large scale national project should affect hydraulic and hydrological phenomena. Therefore, study for topographical change and operation/ maintenance of facilities in river is necessary. In this study, the method of three dimensional (3D) expression of river bed was proposed using detailed measurement in section with the advanced technique. The remote controlled boat called River Robot for Velocity and Volume (R2V2) was used to measure the detailed measurement. A remote controlled boat R2V2 equipped with ADCP and RTK GPS were integrated to measure bottom geometry, velocity profile, and river discharge simultaneously. Therefore, if river bed is expressed in 3D based on this study, it is possible to plan considering surrounding and river topography when planning of river transverse facilities or structures in river.

최근 기후변화 및 대규모 국가사업으로 인한 하도준설, 보 운영 등의 하천환경 변화는 유역 내 수리 수문현상에 많은 영향을 끼칠 것으로 예상되며, 이로 인하여 하도의 물리적 변화에 따른 하상 및 지형 변동 예측, 하도와 시설물의 운영 및 유지관리 등에 대한 연구가 필요할 것으로 예상된다. 이를 위해 본 연구에서는 첨단 기술을 이용하여 2차원 위치와 수심에 대한 정밀한 측정을 수행하고 이를 바탕으로 3차원 하상단면을 표출하는 연구를 수행하였다. 정밀 측정을 위한 장비로는 자유롭게 이동하며 측정할 수 있는 하천유량 계측보트인 R2V2 (River Robot for Velocity and Volume)를 이용하였다. R2V2는 ADCP센서와 RTK-GPS 모듈을 장착하여 실시간으로 하천 전단면에 대한 유속, 유량, 하상 등에 대한 자료를 측정할 수 있고, RTK-GPS를 이용하여 정밀한 위치측정이 가능한 장비이다. 향후 본 연구결과를 바탕으로 3차원 하상단면을 표출한다면, 하천 횡단 또는 하천 내 구조물 계획 수립시 주변지형 뿐 아니라 하천 지형도 고려하는 계획 수립이 이루어질 수 있을 것으로 판단된다.

Keywords

Acknowledgement

Supported by : 국토해양부

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