This is a video of breaking through a preliminary obstacle confirmation test for district heating heat supply in the city. Since the construction section is about 1 km along the road, I think the video should be divided into parts. This is a video to find the end of the existing pipe 500A and check if the position of the push-in propulsion tool is possible in that section. Thank you! 청라지구 내 지역난방 열공급을 위해 사전 지장물 확인 시험 터파기하는 영상입니다. 시공 구간이 도로구간 약 1km라 영상을 파트별로 나눠야 할 것 같습니다. 기존 관500A 끝단을 찾아보고 그 구Ƹ
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