탄성파탐사를 이용한 공주 공산성 원형연못의 지반조사 = Site Characteristics Around the Gongsansung Circular Pond in Gongju Based on the Seismic Methods

다국어 초록 (Multilingual Abstract)

We applied the seismic method to investigate the site characteristics around the Circular Pond (top diameter 7.3 m, bottom diameter 3 m, and depth 4.78 m) at the Ssangsujung Park within the Gongsansung in Gongju. Previous excavations for the cultural assets beneath the Ssangsujung Park disclosed the assumed site of the Palace of the Beakje Dynasty and the Circular Pond containing the Bakje relics. We demonstrated that the seismic prospecting can be applicable to delineate the underground structure around the cultural properties by the three kinds of seismic approaches: walk-away test, conventional refraction method, and equal-distance refraction survey. The last method which is designed by this work ran detect the I-W variations of seismic velocity in the subsurface medium across the Circular Pond on the basis of the difference of the P-wave arrival times between the 1-m-spacing 24 geophones and the corresponding 24 shots parallel with the geophone profile. From the combined results, prominent three-layer velocity structure is observed around the Circular Pond. The bottom layer is interpreted as the basement rock which is exposed near the Ssangsujung whereas the upper layer with relatively lower velocities is interpreted to be the artificial covering. The basement depth beneath the Circular Pond is deeper than the norhern area. The western basement of Circular Pond has the thicker weaker layer compared with the eastern part. Thus, the middle layer could be constructed as the artificial foundation during the Beakje Dynasty. Consequently, the Kong-sansung Circular Pond is possibly built upwardly rather than digging.

참고문헌 (Reference)

1 "한국지질도 공주도폭1 50000. 자원개발연구소" 29-, 1976

2 "충주 미륵리 사지내 석굴석축의 구조." 1 : 101-115, 2002

3 "지구물리탐사 방법의 석탑지반 안전진단에의 적용." 70-83, 2004

4 "익산미륵사지 지반특성에 대한 지구물리학적 연구." 대한지구물리학회 4 : 1-10, 2001

5 "암석의 파괴 확률 분석을통한 불국사 삼층석탑 구조 안전 진단" 4 : 57-69, 2001

6 "불국사 석탑의 지반 특성에 대한 지구물리탐사." 5 : 143-151, 2002

7 "방어산 마애여래입상의 안전진단을위한 지구물리탐사." 대한지구물리학회 4 : 11-20, 2001

8 "물리탐사 기술 심포지움-유적조사 를 중심으로," 도서출판 한림원 189-, 2004

9 "매장문화재 확인을 위한 자력탐사 및 발굴 비교연구: 충남 천안시 두정동 발굴지역" . 대한지구물리학회 3 : 175-184, 2000

10 "공주 능치지역 천부 지하구조에 대 한 지구물리학적 연구." 대한 지구물리학회 4 : 103-111, 2001

11 "공산성 백제추정왕궁지 발굴조사보고서. 공주사범대학 박물관" 320-, 1987

12 "감은사지 3층석탑 (서탑)의 지반특성을 위한 지구물리탐사" 6 : 39-46, 2003

13 "Mapping theancient port at the archaeological site of Itanos" 10 : 163-173, 2003

14 "Instabilityof an underground ancient tomb due to excavationand its relationship to the temperature andground water." 22 : 269-283, 2004

15 "Conservation of the Muryong Royal Tomb of Baekje dynasty, Korea" The Ohio State University 30 : 6-10, 2001