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RISS 인기검색어
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강위평,우보명 ( Wee Pyeong Kang,Bo Myeong Woo ) 한국산림과학회 1985 한국산림과학회지 Vol.70 No.1
By the continuous and heavy rainfall of 615 ㎜ during 15 days, landslide disaster occurred on July 5, 1985 at a steep-sloped land in Munhyon-dong, Pusan. This landslide was sized about 50 m long at slided part and 50 m long at buried part down, 30 m in average width, and 2 m in average depth respectively. 37 human lives and the great amount of properties have been last as the result of this landslide from the steep-sloped land. Summarizing the results of this study, the national-wide plan for the steep sloped land failure control measures on the steep-sloped possible-danger places should be established in Korea.
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87년 태풍 5호에 의한 경남지구의 산사태에 관한 연구
강위평,마호섭,정모근 ( Wee Pyeong Kang,Ho Seop Ma,Mo Geun Jeong ) 한국산림과학회 1988 한국산림과학회지 Vol.77 No.3
Many landslides occurred at the western part of Gyeongnam province by the typhoon No. 875. Their conditions and causes were investigated and were summarized as follows : The total number of landslide occurred was 2,490 and its area was 156.53㏊. In about 94% of landslides and about 97% of landslides area occurred in 3 counties, Sancheong, Hamyang and Geochang. The landslides smaller than 0.01㏊ was 49% of the total indicating that about half of them were the small landslides. Considering homogenous topography amount of precipitation and forest type landslides appeared to be mainly has a high affected by the geological factor because the landslides mainly occurred in the deep weathered soil of igneous rock. The landslides occured on concave slopes of 31 to 35° in steepness with low crown density. In the area of the deep weathered soil, landslide likely occur repeatedly. Therefore, regular erosion control works are recommended in the area of pos for disaster prevention and counter-measures.
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강위평,촌정굉 (村井宏),대촌관 (大村寬),마호섭 ( Wee Pyeong Kang,Hiroshi Murai,Hiroshi Omura,Ho Seop Ma ) 한국산림과학회 1986 한국산림과학회지 Vol.75 No.1
In order to get the fundamental information that could be useful to judge the potentiality of occurrence of rapid shallow landslide in the objective slope, factors selected on Jinhae regions in Korea, where many landslides were caused by heavy rainfall of daily 465 ㎜ and hourly 52㎜ in August 1979, was carried out through the multiple statistics of quantification method (II) by the electronic computer. The net system with 2 × 2 ㎝ unit mesh was overlayed with the contour map of scale 1 : 5000. 74 meshes of landslides and 119 meshes of non-landslide were sampled out to survey the state of vegetative cover and geomorphological conditions, those were divided into 6 items arid 27 categories. As a result, main factors that would lead to landslide were shown in order of vegetation, slope type, slope position, slope, aspect and numbers of stream. Particularly, coniferous forest of l0 years old, concave slope and foot of mountain were main factors making slope instability. On the contrary, coniferous forest of 20-30 years old, deciduous forest, convex slope and summit contributed to the stable against Landslide. The boundary value between two groups of existence and none of landslides was -0.123, and its prediction was 72%. It was well predicted to divide into two groups of them.
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항설에 (降雪) 의한 소나무 임분의 (林分) 피해에 관한 연구
마호섭,강위평,김재생 ( Ho Seop Ma,Wee Pyeong Kang,Jai Saing Kim ) 한국산림과학회 1986 한국산림과학회지 Vol.73 No.1
In general, the snow injury in forestry is an unusual disaster. The degree of snow injury varies greatly depending on stand density and the local topogaphy. This study was conducted to investigate the snow injury in analyzing the demaged by snow-fall in Jinju, Gyeongsangnamdo. The results obtained were summarized as follow; Among 466 total damaged trees, 425 trees were broken and 41 trees were uprooted, the ratio of damage were 5.22%, 2.49%, 0.92% and 0.2% for Pinus densiflora, Pinus thunbergii, Pinus rigida, Alnus hirsuta respectively. The 95% of the damage trees were in the range of 3 to 11 m for height and in the range of 3 to 20 ㎝ for D. B. H.. The directions of the damage trees had a large influence by direction of the wind, but they shown at high tendency to aspect of the slope relatively. The 82% of the damaged trees ranged from 11 to 24 age. The ratio of broken height (H_B/H) indicated that the damage was most frequent in the part of stem as 24%, 45%, 31% in the part of the root collar (0.1), stem (0.2-0.4), crown (0.5-1.0) respectively. In general, trees with stem-form coefficient (H_B/D) over 0.7-0.8 are apt to suffer by snow damage. The average of stem-form coefficient of trees in this area was 1.06. Therefore, the ratio of damage was high tendency as 3.14%. These results indicate that it is necessary to apply pertinent tending which will increase in resistance of snow damage. As avalanches from the flank of soil erosion rise in an importance matter in present, it should also be considered to measures for prevention and restoration.
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수량화(數量化)(II)에 의한 산사태사면(山沙汰斜面)의 위험도(危險度) 판별(判別)
강위평,무라이 히로시,오무라 히로시,마호섭,Kang, Wee Pyeong,Murai, Hiroshi,Omura, Hiroshi,Ma, Ho Seop 한국산림과학회 1986 한국산림과학회지 Vol.75 No.1
In order to get the fundamental information that could be useful to judge the potentiality of occurrence of rapid shallow landslide in the objective slope, factors selected on Jinhae regions in Korea, where many landslides were caused by heavy rainfall of daily 465 mm and hourly 52mm in August 1979, was carried out through the multiple statistics of quantification method (II) by the electronic computer. The net system with $2{\times}2cm$ unit mesh was overlayed with the contour map of scale 1:5000. 74 meshes of landslides and 119 meshes of non-landslide were sampled out to survey the state of vegetative cover and geomorphological conditions, those were divided into 6 items arid 27 categories. As a result, main factors that would lead to landslide were shown in order of vegetation, slope type, slope position, slope, aspect and numbers of stream. Particularly, coniferous forest of 10 years old, concave slope and foot of mountain were main factors making slope instability. On the contrary, coniferous forest of 20-30 years old, deciduous forest, convex slope and summit contributed to the stable against Landslide. The boundary value between two groups of existence and none of landslides was -0.123, and its prediction was 72%. It was well predicted to divide into two groups of them. 산사태안전도판별(山沙汰安全度判別)에 대한 기초자료를 얻기 위하여 1979년(年) 8월(月) 집중호우(集中豪雨)(일강우량(日降雨量) 465mm)에 의하여 산사태(山沙汰)가 발생한 진해지구(鎭海地區)를 모델로 하여 이 지구(地區)의 지형도상(地形圖上)($S=\frac{1}{5,000}$)에 $2cm{\times}2cm$(실면적(實面積) $100m{\times}100m=1ha$) 단위의 격자(格子)를 얹어 산사태지(山沙汰地) 74개, 비산사태지(非山沙汰地) 119개 계(計) 193개의 mesh에 대하여 산사태발생(山沙汰發生)의 각(各) 요인(要因) 및 수준(水準)을 계측(計測)하여 수량화(數量化)(II)의 수법(手法)에 의하여 해석(解析)한 결과 산사태발생(山沙汰發生)에 기여도(寄與度)가 높은 요인(要因)의 순위(順位)는 다음과 같다. 1) 식생(植生), 2) 종단사면형(縱斷斜面形), 3) 사면위치(斜面位置), 4) 경사(傾斜), 5) 방위(方位), 6) 곡수(谷數). 또 침엽수(針葉樹) 10년생(年生) 내외, 복합사면(複合斜面), 하강사면(下降斜面), 산록(山麓), 경사(傾斜), $10^{\circ}-15^{\circ}$, 방위(方位) NW, 곡수(谷數) 1개의 각(各) 수준(水準)이 불안전측(不安全側)에, 침엽수(針葉樹) 20~30년생(年生), 활엽수(?葉樹), 상승사면(上昇斜面), 평형사면(平衡斜面), 산정(山頂) 등의 수준(水準)이 안전측(安全側)에 기여(寄與)하고 있다. 그리고 판별구분치(判別區分値)는 -0.123이고 적중률(適中率)은 72%로서 비교적 양호한 양(兩) group구분(區分)을 할 수 있었다.
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