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Analysis of Quarrying and Restoration Characteristics on Quarry in Korea

국내 토석사업장의 토석채취 및 복구특성 분석

  • Park, Jae-Hyeon (Department of Forest Resources, Gyeongnam National University of Science and Technology) ;
  • Kim, Ki-Dae (Department of Forest Resources, Gyeongnam National University of Science and Technology) ;
  • Kang, Min-Jeng (Division of Forest Disaster Management, National Institute of Forest Science)
  • 박재현 (경남과학기술대학교 산림자원학과) ;
  • 김기대 (경남과학기술대학교 산림자원학과) ;
  • 강민정 (국립산림과학원 산림방재연구과)
  • Received : 2016.03.28
  • Accepted : 2016.04.18
  • Published : 2016.06.30

Abstract

This study was carried out to investigate the quarrying and restoration characteristics on quarry in Korea. We researched quarrying and restoration status, analyzed the relationship between restoration area and permitted period, permitted area, quarrying volume, pit slope width, height, and berm width from 55 quarry sites. Most of the quarries were located in the following conditions : mixed forest, average altitude of less than 300 m, average mountain slope of $61^{\circ}$<, hillside, granite and landslide hazard class. Major quarrying characteristics were permitted period of 6~10 years, permitted area of less than 10 ha, quarrying volume of less than $1,000,000m^3$, a stone type of aggregate, a quarrying type of terrace, pit slope of $61^{\circ}$< Most quarries were restored by themselves, and the main restoration type was slope greening. Also, area ratio of flatland, pit slope, and berm was 54.9:39.6:5.5. Ccorrelation analysis showed that quarrying area was positively correlate with quarrying volume (${\alpha}=0.01$), permitted area, pit width, and pit height (a=0.05).

국내 토석사업장 55개소의 채취 및 복구유형과 특성을 분석한 결과는 다음과 같다. 토석사업장 인근 산림 현황으로는 혼효림, 평균 표고 300 m 이하, 평균경사도 $11{\sim}20^{\circ}$, 산복부가 가장 많이 나타났으며, 화강암을 기반으로한 지역과 산사태위험 1등급이 가장 많은 것으로 나타났다. 토석사업장의 허가기간으로는 6~10년, 허가면적 10 ha 이하, 채취량 100만 이하의 사업장이 가장 많은 것으로 나타났다. 쇄골재용 석재를 채취하는 사업장, 계단식 채석을 시행하는 사업장, 잔벽 경사로는 $61^{\circ}$ 이상인 사업장이 가장 많이 나타났다. 복구시 자력으로 복구한 사업장과 복구유형 중 비탈면 녹화형으로 복구한 사업장이 가장 많이 나타났으며, 복구지의 평탄지와 잔벽, 소단 면적이 각각 54.9:39.6:5.5의 비율로 나타났다. 토석사업장 복구면적과 각 인자와의 상관관계를 분석한 결과, 채취량(유의성 1%), 허가면적, 잔벽 폭, 잔벽 높이(유의성 5%)가 정의 상관관계를 나타내었다.

Keywords

References

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