Structural Stability, Weathering and Conservation Method of Granite Standing Sculptured Buddha at Hwangsang-dong, Kumi

구미 황상동 마애여래입상의 구조적 안정성, 풍화 및 보존방안

  • Lee, Chan Hee (Nondestructive Research Laboratory of Cultural Property, Kongju National University) ;
  • Choi, Suck Won (Nondestructive Research Laboratory of Cultural Property, Kongju National University) ;
  • Suh, Mancheol (Nondestructive Research Laboratory of Cultural Property, Kongju National University) ;
  • Chae, Sang Jeong (Nondestructive Research Laboratory of Cultural Property, Kongju National University)
  • 이찬희 (공주대학교 문화재비파괴진단연구실) ;
  • 최석원 (공주대학교 문화재비파괴진단연구실) ;
  • 서만철 (공주대학교 문화재비파괴진단연구실) ;
  • 채상정 (공주대학교 문화재비파괴진단연구실)
  • Published : 2000.12.30

Abstract

Rock composition of the Hwangsang-dong Granite Standing Sculptured Buddha (Treasure No. 1122) in the Kumi City is biotite-hornblende granodiorite which consists of about 30 pieces of individual rock blocks of same compositions. However, the cap rocks is pebble-bearing coarse sandstone. Rock blocks of the Standing Buddha and surrounding out crops occur well developed several joint systems of $N25^{\circ}$ to $45^{\circ}W$ strike and nearly vertical (70 to $85^{\circ}SE$) dipping. Rock blocks of the Standing Buddha showed vertical, horizontal and oblique joints, and those blocks are well supported by individual blocks. However, the junction part of the blocks are under dangerous situation due 10 seriously mechanical and chemical weathering. Host rock of the Standing Buddha belongs to the HW grade, therefore mostly rock-forming minerals of the granodiorite Standing Buddha altered with clay and iron hydroxide minerals by mineralogical and chemical weathering. Near surface of the Standing Buddha show spore and mycelium of green algaes, and a joint plane alive with weeds. We suggest that if structural stability for the Standing Buddha remove essentially a unstable rock blocks from the main body, and the main body necessitate supporting by rock bolting method because of repeated unstability and minimizing stress to the rock blocks. For the opened joint planes, fractured surface and alive weeds will attempt to fill in a petro-epoxy, petro-filler and biochemical treatments for the algaes, and ground water curtain and wall seems to be necessary for water flow and diminishing humidity of the Standing Buddha.

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Acknowledgement

Supported by : 과학기술부 국가지정연구실, 공주대학교 문화재비파괴진단연구실