This study investigates the application of a synthetic resine based net-hose system to sustain vegetated embankment slope reinforcement. The net-hose system is designated to improve water supply to the vegetation that can suffer the lack of water in case of extreme drying condition or rock slope where water supply is relatively insufficient to ensure the growth of vegetation. A series of laboratory tests were conducted to check the structural adequacy and effectiveness of net-hose system. The results indicated that the model slope equipped with net-hose system seemed to provide better water supply resulting in more vegetated areas and higher matric suction due to active water uptake capacity, which might be contributed to greater shear strength of slope surface. A limited numerical analysis was conducted to verify the effect of water uptake on vegetated root system that generally yields better slope stability.

This study investigates the application of net-hose system to sustain a vegetated slope reinforcement. The net-hose system is designated to improve water supply to the vegetation that can suffer the lack of water in case of extreme drying condition or rock slope where the water supply is relatively insufficient to ensure the growth of vegetation. A series of laboratoy tests were conducted to check the structural adequacy and effectiveness of net-hose net hose system. The results indicated that the model slope equipped with net-hose system seemed to provide better water supply leading to more vegetated areas and higher matric suction due to active water uptake capacity, which might be contributed to greater shear strength of slope surface. A limited numerical analysis was conducted to verify the effect of water uptake of vegetated root system that generally yields better slope stability.

The number of areas where slopes is exposed is increasing constantly due to continuous expansion of infrastructure and urban development in our country where is mostly mountainous areas, and the number of man-made disasters is also increasing accordingly. It is necessary to develop new durable seed spraying soil materials that enable stable greening on rock slopes and establish the optimal construction method that is suitable for such materials. Therefore, a basic rearch on a method to replicate the field construction method of seed spraying soil materials indoors, produce and evaluate the specimen was carried out in this study.

For reinforced soil slopes with anchors, additional slope reinforcement using anchors is highly difficult due to their interference with previously installed anchors. This case study presents the applicability of high pressure jet nail for the reinforcement of slopes where additional reinforcement is needed due to the loss of tensile force in the anchors.

Korea features mountainous areas, and the exposed slop area is on the rapid rise due to constant spread of national infrastructure and urban development, which leads to accompanied increase of artificial disasters. Thus there is a demand for developing long-lived seed spray materials that will enable stable tree planting and establishing an optimal construction method to suit such a material.

적외선 영상이란 대상물을 열 적외선 영상장치로 촬영해 표면의 미소한 온도차이로부터 물체의 성질이나 물체내부의 상황에 대해서 비접촉, 비파괴로 조사하는 기법을 말한다. 열적외선 영상장치는 물체의 가시상을 영상화하는 보통의 촬영과는 다르고 물체의 온도를 영상화할 수가 있다. 일반적으로 적외선 열화상은 건축물과 지하구조물에 적용되어 왔으나 본 기술을 절토사면 안전관리 분야에 확대 적용함으로서 안전하고 신속하게 보수보강이 필요한 결함부위의 추출이 가능할 것으로 본다. 열 적외선 장치를 이용해 숏크리트 면을 촬영하면 배후 지반의 상태에 따라 표면의 온도가 다르게 나타난다. 일반적으로 공기의 부피 열용량은 흙에 비해 대단히 작기 때문에 모르터 배후에 공동부가 있는 경우에는 외부온도에 민감히 반응하며, 가열은 쉽고 감열은 서서히 나타난다. 반대로 물의 부피 열용량은 대단히 크기 때문에 습기가 많은 부위는 가열감열속도가 늦은 특성을 가지고 있다. 한편, 상온부근의 물체표면에서는 적외선(파장 3～14㎛)에 의한 열방사가 이루어지므로 열적외선영상장치를 이용해 이 열방사량을 면적으로 감지해 영상화하여 숏크리트면의 온도분포를 단시간에 효율적으로 획득할 수 있다. Fig. 1은 일반적인 열적외선 시스템을 나타내고 있다. Table 1은 열적외선 영상법의 주된 활용범위를 나타낸 것이며, 열적외선 영상법의 주요 특징은 다음과 같다. ① 측정대상물의 온도를 비접촉으로 계측할 수 있다.② 온도분포로서 영상화된 상태로 표시되기 때문에 평면적인 관찰이 용이하다.③ 야간에도 관찰이 가능하다.활용분야주요활용방법의 료체온측정전 자 전 기전기기구의 신뢰성 시험 및 이상조사전 력발전소 등의 설비보존, 점검기 상위성을 이용한 기상관측건 축건축물의 점검