The purpose of this study is to analyze the overall condition of the foundation for the three storied stone pagoda of Bulguksa temple in GyeongJu. As a research method, exploration of the electrical resistivity, refraction seismic, surface wave exploration, GPR exploration, Reputation loading test. The results of the investigation, the range of the foundation was formed in foundation stone outskirts of 1.5 ∼ 2.0m. It was confirmed to be about 2.0m depth. The depth of the foundation becomes shallower from the base portion to the outside. And the bearing capacity of foundation was sufficient conditions to weight. It can sufficiently support the weight of pagoda. And, the result of this investigation becomes basis data for repair work.

Abstract
 1. 머리말
 2. 경주 불국사 삼층석탑 기초 비파괴조사2-1. 기초 물성 조사
  2-1. 기초 물성 조사
  2-2. 기초 지내력 조사13)
 3. 경주 불국사 삼층석탑 기초 현황
  3-1. 암반층 위 조성된 단단한 성토지반
  3-2. 비파괴조사를 반영한 석탑 기초부 수리
 4. 기초부 비파괴 조사연구의 성과와 개선방향
  4-1. 경주 남산 남리사지 석탑지 발굴조사22)
  4-2. 불국사 삼층석탑과 남리사지 삼층석탑 기초지반조사 비교분석
 5. 맺음말
 References

• 지성진(국립문화재연구소 건축문화재연구실 학예연구사) | Ji Sung-Jin
• 문정민(국립문화재연구소 건축문화재연구실 연구원) | Moon Jeong-Min