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서남해 해상풍력발전단지 내 항로형태에 따른 선박통항 위험도 평가에 관한 연구

Study on Vessel Traffic Risk Assessment according to Waterway Patterns in a Southwest Offshore Wind Farm

  • 투고 : 2019.07.25
  • 심사 : 2019.10.28
  • 발행 : 2019.10.31

초록

서남해 해상풍력발전단지 내 선박 통항 금지와 조업 제한으로 인해 사업자와 어민간의 갈등이 심화되고 있다. 이러한 문제 해결을 위하여 국내에서도 유럽의 해상풍력발전단지와 같이 발전단지 내 선박 통항과 어로작업 허용을 검토하고 있다. 이 연구는 서남해 해상풍력발전단지 내 선박 통항을 가정하여 항로의 형태에 따른 해상교통위험도 발생비율을 ES 모델과 IWRAP을 이용하여 분석하였다. 또한, 항로의 형태(십자형 항로 및 격자형 항로)와 선박 통항량(현재, 3배, 5배, 10배)에 변화를 주어 위험도를 정량적으로 평가하였다. 주요 평가결과는 다음과 같다. 현재의 교통량에서 십자형 항로와 격자형 항로를 운영할 경우 조선부담감(종합환경스트레스치가 750 이상)이 높은 구간은 발생하지 않았으며, 연간 충돌확률도 큰 차이가 발생하지 않았다. 그러나 통항량이 현재보다 3배, 5배, 10배 증가함에 따라 교차지점에서 조선부담감과 연간 충돌확률이 급격히 증가함을 확인하였으며, 이를 통해 격자형 항로에서 교통류 분리를 통해 위험도를 효과적으로 분산시킬 수 있다는 것을 알 수 있었다. 본 연구의 결과는 서남해 해상풍력발전단지 내에서 항로설정, 항로운영방식, 안전대책 등에 활용이 가능할 것으로 기대된다.

Domestic southwest offshore wind farms have problems such as the reduction in fishing rights by prohibiting vessel traffic, which delays their development. As such, there is a need to develop offshore windfarms in Europe to permit the passage of vessels and fishing operations in specific offshore windfarm areas. In this study, we used the environmental stress (ES model) and the IALA Waterway Risk Assessment Program (IWRAP) to determine the ratio of risk to the route type (cross pattern, grid pattern) and traffic volume (present, 3 times, 5 times and 10 times) to derive the risk factors of specific vessels for offshore windfarms. As a result, ship operators' risk related to offshore windfarms did not rise in both route types and there was no significant difference in the annual probability of collision in the present traffic volume. In conditions that increased traffic volume by 3 times, 5 times and 10 times, the risk ratio increased as ship operator risk and collision probability increased at the crossing points. Furthermore, when the traffic volume of the ship increased, the risk could be more effectively distributed in the grid route compared to the cross route. The results of this study are expected to apply to the operation type, route operation method, safety measures, etc. in offshore wind farms.

키워드

참고문헌

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