This is a study on the structural changes of the tumulus and causes setting up a Sabangseok at the front of the tumulus at the royal tomb in the JoSeon dynasty, during the 17th~18th centuries. The Sabangseok was first used in the tumulus of Mongnueng(穆陵) in 1630. It is a multipurpose stone for boundary, foundation of the tumulus and blocking the sliding down of the tumulus. It was set up, when constructing a Yeongneung(寧陵) in 1673. But the vast spill of tumulus soil made it improve structure of the Sabangseok. Consequently, when the Yeongneung was re-constructed, the structure of the tumulus was fundamentally improved. The soil layer on the lime of the subterranean chamber became eliminated. Also the lime of the tumulus and the lime of the subterranean chamber became a united structure. The Sabangseok was still used until 1757 on account of precedents, although it would become unnecessary after structural improvement of the tumulus in 1673. In 1757, Yeongjo(The 21th monarch of the Joseon Dynasty) commanded repeal on the use of the Sabangseok, when constructing the Hongneung(tomb of Queen Jeongseong) . The decision and discussions about abolition on the use of the Sabangseok was recorded in Gukjosangryebopyeon.

Abstract
1. 서 론
2. 목릉천릉(1630년), 사방석의 등장
    2-1. 1649년 『효종실록』에 따른 사방석의 정의
    2-3. 목릉 천릉 시(1630년), 사방석 사용 원인
3. 회격릉의 구조와 사방석의 역할
    3-1. 16∼17세기 초, 회격릉의 구조
    3-2. 전면반월분 하부에 사방석 설치
4. 사방석 폐지와 봉릉 구조
    4-1. 전례에 따라 사용되는 사방석
    4-2. 『국조상례보편』(1757년), 사방석 폐지
    4-3. 1757년 이후, 봉릉의 구조
5. 맺음말
참고문헌

• 신지혜((주)건축문헌고고스튜디오) | Shin Ji-Hye Corresponding Author