• 한국지반공학회:학술대회논문집
• /
• 한국지반공학회 2000년도 가을 학술발표회 논문집
• /
• pp.635-638
• /
• 2000

The feasibility study on the application of formed urethane to slope stabilization and backfill material was carried out through laboratory and field test. The physical and chemical properties of formed urethane were investigated. The slope stabilization effect of urethane was examined in the field occurred slope failure. The formed urethane and sprayed urethane admixed with seed was applied to protect the slope failure in this study.

• Journal of Forest and Environmental Science
• /
• 제30권1호
• /
• pp.71-75
• /
• 2014

Forest roads failure is one of the most common problems caused by heavy rainfalls. This study investigated the characteristics on stabilization measures installed for cutting slopes failure of forest road resulted from heavy rainfalls. Three primary factors (slope length, slope gradient, soil type) affecting cutting slope failure were considered and stabilization measures were classified into two types (A type: wooden fence, vegetation sandbag, stone masonry; B type: wire cylinder, gabion, concrete retaining wall) through discriminant analysis based on their capacity of resistance to slope failure. Results showed that A type was mainly installed in such conditions as cut slope <8 m, cut slope gradient $30-40^{\circ}$ and soil type with soil while B type occurred in locational conditions as cut slope length >8 m, cut slope gradient < $30^{\circ}$ and > $30^{\circ}$, and soil type of gravelly soil and rock.

• 한국지반공학회:학술대회논문집
• /
• 한국지반공학회 2008년도 추계 학술발표회
• /
• pp.984-991
• /
• 2008

In this study, to evaluate the slope and tunnel stabilization method using pc cable with bulbed. To estimate the application of tunnel support using field tests and numerical analysis results. The reinforcement effects of slope stabilization method reinforced by PC cables were estimated compared with conventional soil nail system that reinforce the slope using rebar.

• 한국지반공학회:학술대회논문집
• /
• 한국지반공학회 1997년도 사면안정 학술발표회 논문집
• /
• pp.137-146
• /
• 1997

• 한국환경복원기술학회지
• /
• 제1권1호
• /
• pp.95-101
• /
• 1998

In order to seek a efficiency of site cooperation and slope stabilization in a rock sloping work, it would rather take into consideration, in its importance, a concurrent performance of civil works and landscaping works than give any part a special priority. It can enable us to achieve an expanded scope of landscaping works and improvement of slope scenery via this sort of cooperation. However, this can not be achieved without assurance on the slope stabilization and scenic view of the project owner, and further via this cooperation, environmentally familiar works can be performed, becoming natural environment and minimizing damages on surrounding scenery and environment. It is foreseeable that improvement of functions of civil equipment, introduction of technology and development of landscaping materials can facilitate an improvement in the betterment of slope scenery. Landscaping related parties need to enhance their understanding of rock sloping and scenic view based on knowledge on the fundermental understanding of slope stabilization and on the base rock characteristics.

• 한국환경복원기술학회지
• /
• 제2권3호
• /
• pp.47-53
• /
• 1999

This study was carried out to suggest the slope revegetation technology of biological engineering using the Ligustrum obtusifolium, which is one of the pioneer plant species. Ahead of the experimental construction, we evaluated the L. obtusifolium's value of biological engineering for the slope stabilization by testing the growth rate after the cuttings were buried for 8 weeks('98. 7. ~ '98. 9.). In this test, it was found that the L. obtusifolium, one of the species deep rooted with developed underground parts, is very effective for the slope stabilization and that the rooting powder(Hormex Powder) gave the better effects on root germination. In April of 1999, the experimental construction of biological engineering technology using recycled L. obtusifolium live cuttings(applied growth-stimulating compound) and green bags was conducted at sandy cut-slope in GLEN ROSS G.C.(Yongin). The slope was tolerant of soil erosion despite of heavy rainfall in the rainy season and many plant species invading for five months('99. 4. ~ '99. 9.). The vegetation research was performed through examining the frequency of each block using the transect method. 21 kinds of plant speices appeared in total area($25.5m^2$) and the dominant species are Digitaria sanguinalis, Setaria viridis, Cyperus amuricus, Persicaria blumei, Artemisia princeps var. orientalis. With regard to life forms, therophytes were shown with a dominant distribution of 66.7% of total species and neophytes relatively with a low distribution of 19.0%. Furthermore, it can be estimated that there is no ecological stabilization of this slope with the result of the ruderal species' occupation of 71.4%. It is too early to argue about ecological mechanical advantages and disadvantages of this technology, but, from the result of this study, it is expected that the slope revegetation technology of biological engineering using L. obtusifolium can be effectively applied to sandy slope(not rock or weathered rock slope) and that the early rapid stabilization and favorable succession could be done with the improvement of soil condition.

• Journal of Forest and Environmental Science
• /
• 제17권1호
• /
• pp.104-115
• /
• 2001

이 연구는 변성암지역에 있어서 집중호우로 인하여 붕괴위험이 있는 토사사면과 풍화암사면을 대상으로 소경재 붕괴억지공법을 신(申)(1978, 1989)이 제시한 억지말뚝식을 이용하여 수립하였고, 그 결과는 다음과 같다. 말뚝의 설치간격은 말뚝이 받는 부담하중에 따라 틀려지나 토사사면의 상대적으로 급한 산지경사에서는 사면길이에 상관없이 말뚝의 타설간격을 0.5m~0.8m로 하는 것이 적절한 것으로 나타났고, 상대적으로 낮은 산지경사에서는 말뚝의 타설간격은 약 0.7~2.0m가 적당한 것으로 나타났다. 또한 풍화암사면의 경우 상대적으로 급한 경사에서는 말뚝의 타설간격을 대략 0.5m~1.3m로 설치하는 것이 바람직한 것으로 나타났고, 상대적으로 낮은 산지경사에서는 말뚝의 타설간격을 0.7m~2.0m로 하는 것이 적절한 것으로 나타났다. 그리고 말뚝의 길이는 말뚝 1, 2, 3은 약 4m, 말뚝 4, 5는 약 3m정도의 길이가 요구되는 것으로 나타났다.

• 한국산림과학회지
• /
• 제108권4호
• /
• pp.582-591
• /
• 2019

본 연구는 산림작업로의 사용이후에 존치시켜 지속적으로 활용하기 위하여 필요한 저비용 구조의 간이 사면안정구 조물을 개발하고, 그 시공효과를 살펴보고자 실시하였다. 국립산림과학원 산림기술경영연구소 관내에 시설된 산림작업로의 성토사면에 안정구조물을 시공하였다. 성토사면 간이 안정구조물에 대하여 차량의 통행으로 인한 노면 침하량 및 지지력 분석을 실시하였고, 모든 사면안정구조물에 대해서는 차량통행으로 인한 안정구조물의 변위량을 측정하여 안정성을 판정하였다. 성토사면 간이 사면안정구조물을 대상으로 한 소운재 차량(총 중량 17톤)을 최대 100회(목재운송량 780 ㎥)까지 통행 후 운송횟수별 노면의 지지력과 침하량을 분석한 결과, 안정처리공법별로 노면의 침하량은 최대 150 mm 이하로 양호한 것으로 나타났으나, 노면지지력의 효과는 크게 없는 것으로 나타났다. 또한, 안정구조물의 안정성을 평가한 결과, 뿌리쌓기 공법에서 안정성이 다소 낮았으나, 대체로 모든 구조물의 평균 변위량이 약 20 mm이하로 구조적 안정성에는 큰 문제가 없는 것으로 나타났다. 이와 같이 목재생산 이후에 존치되는 산림작업로를 대상으로 간이한 사면안정구조물을 적용한다면 효율적 목재생산이 가능할 뿐만 아니라, 부족한 임도를 보완할 수 있는 영구적인 생산기반시설로 활용이 가능할 것으로 사료된다.

• 한국지반공학회:학술대회논문집
• /
• 한국지반공학회 2000년도 사면안정 학술발표회
• /
• pp.3-38
• /
• 2000

Slope draperies in soil and rock are a well known method to avoid rockfalls into the roads or onto housings. Common wire mesh or a combination of wire mesh and wire rope nets are pinned to the slope by the means of fully grouted nails or anchors. Most of these installations have not been designed to stabilize the slope, but simply avoid the rocks from bouncing. The combination of soil- or rocknailing with a designable flexible facing system offers the advantage of a longterm stabilization of slopes and can replace other standard methods for slope stabilization. The capability to transfer axial and shear loads from the flexible facing system to the anchor points is most decisive for the design of the stabilization system. But the transfer of forces by mesh as pure surface protection devices is limited on account of their tensile strength and above all also by the possible force transmission to the anchoring points. Strong wire rope nets increase the performance for slope stabilizations with greater distances between nails and anchors and are widely used in Europe. However, they are comparatively expensive in relation to the protected surface. Today, special processes enable the production of diagonally structured mesh from high-tensile steel wire. These mesh provide tensile strengths comparable to wire rope nets. The interaction of mesh and fastening to nail / anchor has been investigated in comprehensive laboratory tests. This also in an effort to find a suitable fastening plates which allows an optimal utilization of the strength of the mesh in tangential (slope-parallel) as well as in vertical direction (perpendicular to the slope). The trials also confirmed that these new mesh, in combination with suitable plates, enable substantial pretensioning of the system. Such pretensioning increases the efficiency of the protection system. This restricts deformations in the surface section of critical slopes which might otherwise cause slides and movements as a result of dilatation. Suitable dimensioning models permit to correctly dimension such systems. The new mesh with the adapted fastening elements have already been installed in first pilot projects in Switzerland and Germany and provide useful information on handling and effects.

• 한국방재학회:학술대회논문집
• /
• 한국방재학회 2007년도 정기총회 및 학술발표대회
• /
• pp.505-508
• /
• 2007

Usually, cut-slope is the term that call rock slope. Therefore, the cause of instability of cut-slope is influenced generally in lithological and structure geological qualities including weathering disintegration. Through the several case studies, we could confirm that stabilization countermeasure also should be based in geological properties.